|| List of recent Amplifier Circuit-related patents
| Radiation imaging apparatus and radiation imaging system|
A radiation imaging apparatus includes a pixel array having pixels, a bias line applying a bias potential to converters of the pixels, a detection circuit which detects a current flowing to the bias line, and a control unit which detects a start of radiation irradiation to the pixel array based on an output from the detection circuit and controls a charge accumulation operation of the pixels in accordance with the detection. The detection circuit includes a differential amplifier circuit and a feedback path, and applies a potential corresponding to a reference bias potential to the bias line.
| Semiconductor memory device|
A sense amplifier circuit is divided into a plurality of sense amplifier groups. The plurality of sense amplifier groups are each further divided into a plurality of sense units.
| Symmetric baluns and isolation techniques|
Wideband balun having good performance characteristics for use in feeding differential antenna elements in array antennas, balanced amplifier circuits and other applications is described. Also described is a common mode isolation circuit suitable for integration with the balun..
| Amplifier circuit with improved slew rate|
An amplifier circuit for improved slew rate consists of three main sections, which are the common mode rejection stage, primary gain stage and the output stage. The main circuit is a modified version of the fully differential operational amplifier circuit.
| Operational amplifier circuit|
Provided is an operational amplifier circuit capable of operating with lower current consumption. An amplifier stage, a fir filter, and a sample and hold circuit are connected in series, thus enabling reduction of an input offset voltage and amplification of an input signal voltage without using an integral circuit.
| Enhanced doherty amplifier|
The disclosure relates to an enhanced doherty amplifier that provides significant performance improvements over conventional doherty amplifiers. The enhanced doherty amplifier includes a power splitter, combining node, a carrier path, and a peaking path.
| Voltage regulator|
There is provided a voltage regulator that stably operates without using a large phase compensation capacitance. The voltage regulator has a voltage 3-stage amplifier circuit comprised of a differential amplifier circuit, a first source ground amplifier circuit provided with a phase compensation circuit, and a second source ground amplifier circuit, which serves as an output circuit.
| Semiconductor device and power supply device|
A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a pfc circuit.
|Programmable transmit continuous-time filter|
A programmable-current transmit continuous-time filter (tx-ctf) system can be included in a radio frequency (rf) transmitter. The input of the tx-ctf can receive a baseband transmission signal, and the output of the tx-ctf can be provided to an upconversion mixer for conversion to rf for transmission.
|Sense amplifier circuit and semiconductor memory device|
A semiconductor device may comprise a first bit line, a second bit line, a memory cell connected to the first bit line, a bit line sense amplifier circuit and a control circuit. The bit line sense amplifier circuit may be coupled to the memory cell.
|Amplifier and wireless communication device|
In a power amplifier including an amplifier circuit unit for high power mode and an amplifier circuit unit for low power mode provided in parallel thereto between input and output of the amplifier and where, when one amplifier circuit unit is in an operating state, the other amplifier circuit unit is in a non-operating state, a cross-coupled capacitor is provided between a drain of one of two transistors in output side and a gate of the other transistor in the amplifier circuit unit for high power mode, and a series circuit where a switch and a capacitor are coupled in series is coupled between a drain of the transistor of output side in the amplifier circuit unit for low power mode and a ground, the switch being in a conducting state in high power mode operation and being in a non-conducting state in low power mode operation.. .
Provided is a device, including: a first terminal which receives an external clock signal; a clock generation circuit connected to the first terminal to generate an internal clock signal based on the external clock signal; word lines and bit lines; amplifier circuits connected to the bit lines, respectively; and a control unit. The control unit controls, in a test operation, at least one of the word lines to repeat a selected state and an unselected state in accordance with the internal clock signal during a first period, and maintains the amplifier circuits in an active state during the first period.
|Power amplifier apparatus and power amplifier circuit|
The present invention relates to a power amplifier apparatus and a power amplifier circuit thereof, the power amplifier circuit uses doherty circuit structure, and the final stage power amplifier circuit uses high electron mobility transistor (hemt) power amplifiers to achieve a carrier amplifier with the doherty circuit structure and a peak amplifier with the doherty circuit structure. The power amplifier apparatus and a power amplifier circuit thereof in the present invention improves the efficiency of the power amplifier..
|Operational amplifier circuit and method for enhancing driving capacity thereof|
An operational amplifier circuit configured to drive a load is provided. The operational amplifier circuit includes an output stage module.
|Sensing amplifier using capacitive coupling to realize dynamic reference voltage|
A sensing amplifier using capacitive coupling and a dynamic reference voltage, where the sensing amplifier circuit includes a bit line, configured to receive charging and discharging signals; a sensing amplifier, connected to the bit line and configured to receive the bit line and a reference voltage for comparison and configured to enlarge the voltage difference between a high point and a low point; and a reference voltage generator, connected to the sensing amplifier to generate the reference voltage required for the sensing amplifier to compare. The sensing amplifier effectively enhances sensing margin of the sensing amplifier circuit; and in addition, to accelerate the access speed, the sensing amplifier can easily determine the correct stored data and further quickly solve the problems of high-speed storing the data by the storage units..
|Mass analyser and method of mass analysis|
An electrostatic ion trap for mass analysis includes a first array of electrodes and a second array of electrodes, spaced from the first array of electrode. The first and second arrays of electrodes may be planar arrays formed by parallel strip electrodes or by concentric, circular or part-circular electrically conductive rings.
|Single-input multiple-output amplifiers with independent gain control per output|
Amplifiers with multiple outputs and separate gain control per output are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) may include first and second amplifier circuits.
Since a high-frequency signal that is output from a high-frequency oscillator circuit section is detected in a detector circuit and a bias of a negative voltage is supplied from a bias circuit section to the high-frequency amplifier circuit section with a detection voltage that is detected, a negative power supply circuit such as a dc/dc converter or a peripheral circuit is not required, and since a negative bias voltage can be supplied to a high-frequency amplifier circuit, downsizing can be achieved with a low cost.. .
|Operational amplifier circuit|
Provided is an operational amplifier circuit having a high tolerance for clock phase difference fluctuations. An fir filter is used to add an input signal of the fir filter to a signal obtained by delaying the input signal of the fir filter.
|Voltage adjusting circuit for amplifier circuit and method thereof|
A voltage adjusting circuit includes a reference voltage generating circuit, a subtractor circuit, a threshold generating circuit and a comparator circuit. The voltage adjusting circuit may provide power supply signals to an amplifier circuit so that the amplifier circuit may provide an output signal to a load according to an input signal.
|Light emitting diode driving circuit|
An light emitting diode driving circuit includes an inductor having one end receiving a pulse dc voltage input and another end forwardly-biased and electrically; a power switch connected to another end of the inductor and a first amplifier circuit; the first amplifier circuit serving for converting a first current flowing through the power switch into a first voltage; a second amplifier circuit serving for converting a second current flowing through the led module into a second voltage; and a comparator circuit comparing the first voltage with a reference voltage; when the first voltage being smaller than the reference voltage, the power switch is conducted; otherwise it is not conducted; the comparator circuit further comparing a second voltage with the reference voltage, when the second voltage is greater than the reference voltage, the power switch is not conducted continuously; otherwise, it is conducted. Thereby, the led module is driven..
|Constant voltage circuit and analog electronic clock|
There are provided a constant voltage circuit that features low current consumption and stable operation, and an analog electronic clock provided with the constant voltage circuit. The constant voltage circuit includes a differential amplifier circuit which is turned on/off by a predetermined signal and which controls the voltage of a gate of an output transistor on the basis of a reference voltage and a feedback voltage that are received, a switch circuit which is connected to an output terminal of the differential amplifier circuit and which is turned on/off by a predetermined signal, and a voltage holding circuit which is connected between the gate of the output transistor and a power supply terminal and which has a resistor and a capacitor connected in series.
An amplifier circuit is described comprising a first field effect transistor comprising a first source/drain terminal coupled to a first supply terminal, a second source/drain terminal coupled to an output of the amplifier circuit and a gate terminal; a second field effect transistor comprising a first source/drain terminal coupled to an input of the amplifier circuit, a second source/drain terminal coupled to the gate terminal of the first field effect transistor and a gate terminal; a third field effect transistor comprising a first source/drain terminal coupled to a first bias current source of the amplifier circuit, a second source/drain terminal and a gate terminal coupled to its first source/drain terminal and the gate terminal of the second field effect transistor; a fourth field effect transistor comprising a first source/drain terminal coupled to a second bias current source, a second source/drain terminal coupled to a second supply terminal and a gate terminal coupled to the second source/drain terminal of the third field effect transistor; and a control circuit coupled to the gate of the fourth field effect transistor configured to control the source drain voltage of the fourth field effect transistor by means of the gate of the fourth field effect transistor to be equal to a reference voltage.. .
|On-die harmonics filtering for radio frequency power amplifiers|
A power amplifier architecture for connecting a radio frequency (rf) transceiver to an antenna. An input matching circuit is connected to its input port, and an output matching circuit is connected to its output port.
|Nonvolatile memory device and read method thereof|
A nonvolatile memory device is provided which includes a main area including main cells connected to word lines and main bit lines; a reference area including reference cells connected to the word lines and reference bit lines and programmed using the same write condition as that of the main area; a reference sense amplifier circuit configured to read data written at the reference area through the reference bit lines at a read operation; and control logic configured to control the reference sense amplifier circuit such that data written at the reference area is shifted with a weight scheme and then read, the data written at the reference area being used as a read reference value of the main area at a read operation.. .
|Radio frequency amplifier circuit|
A radio frequency amplifier circuit includes a transistor and an output-side matching circuit. The output-side matching circuit includes a first distributed constant line to which a radio frequency signal from the transistor is transmitted, a flat plate lead terminal transmitting the radio frequency signal from the first distributed constant line to an outside of the package, and a capacitive element having one electrode that is connected to the lead terminal and the other electrode that is grounded.
|Monitoring system for detecting degradation of integrated circuit|
A monitoring system for detecting stress degradation of a semiconductor integrated circuit has an amplifier circuit and degradation test transistors. Multiplexers are provided that have an output coupled to a respective electrode of the degradation test transistor.
|Memory sensing circuit|
A sensing circuit includes a sense amplifier circuit having a first and second nodes through which a magnetic memory element is sensed. A first current source is coupled to the first node a second current source is coupled to the second node.
|Sense amplifier scheme for low voltage sram and register files|
In at least one embodiment, a sense amplifier circuit includes a bit line, a sense amplifier output, a keeper circuit, and a noise threshold control circuit. The keeper circuit is coupled to the bit line and includes an nmos transistor coupled between a power node and the bit line.
|Ask modulation amplification circuit|
An amplitude shift keying (ask) modulation amplifier circuit includes a first amplifier to which a high frequency signal and a modulating signal are supplied, and that is configured to perform an amplification of the high frequency signal and an ask modulation, and a second amplifier to which an output of the first amplifier and the modulating signal are supplied, and that is configured to perform an amplification of the output signal from the first amplifier and an ask modulation. In some configurations, an amplification gain of the second amplifier is set higher than an amplification gain of the first amplifier..
|Amplifier circuit including digital amplifier and analog amplifier|
An amplifier circuit includes a digital amplifier configured to amplify an input signal to output a first output signal, an analog amplifier configured to amplify the input signal to output a second output signal, a check circuit configured to produce a check signal responsive to frequencies of the input signal, and a selector circuit configured to select and output one of the first output signal and the second output signal in response to the check signal.. .
|Amplifier circuits and methods of amplifying an input signal|
A method of operating an amplifier circuit having a pre-charge phase and a sample/conversion phase includes, during a pre-charge phase, charging first and second capacitors to first and second bias voltages. The first capacitor is coupled to a first input of an amplifier circuit, which has a second input and an output.
A coulomb counter is provided. In the coulomb counter, a current generated on charge or discharge of a secondary battery is converted into a voltage by a resistor, and the voltage is amplified by an amplifier circuit.
|Integrated rf front end with stacked transistor switch|
A monolithic integrated circuit (ic), and method of manufacturing same, that includes all rf front end or transceiver elements for a portable communication device, including a power amplifier (pa), a matching, coupling and filtering network, and an antenna switch to couple the conditioned pa signal to an antenna. An output signal sensor senses at least a voltage amplitude of the signal switched by the antenna switch, and signals a pa control circuit to limit pa output power in response to excessive values of sensed output.
Radio frequency (rf) amplifier circuits are disclosed which may exhibit improved video/instantaneous bandwidth performance compared to conventional circuits. For example, disclosed rf amplifier circuits employ various concepts for reducing an overall circuit inductance or enabling an increase in capacitance for a given circuit size..
|Audio amplifier performance while maintaining usb compliance and power down protection|
An apparatus comprises a first audio amplifier circuit configured to provide an analog audio signal and an analog switch circuit including a first input configured to receive the analog audio signal, a second input configured to receive a first digital data signal, and a first output configured to provide one of the digital data signal or the analog audio signal. The apparatus also includes a first feedback circuit coupled to the first audio amplifier circuit and the analog switch circuit output, the feedback circuit configured to bias the first audio amplifier circuit..
|Single-ended sense amplifier circuit|
A single-ended sense amplifier and a method for reading a memory cell are disclosed. The method includes the following steps.
|Systems and methods to adjust the matching conditions of an amplifier|
A system and method improve amplifier efficiency of operation relative to that of a matching circuit with fixed matching conditions. A power level representing a level of transmission power from an amplifier circuit and an indicator of amplifier circuit operation are provided.
|High-frequency bandwidth amplifying circuit|
A high-frequency bandwidth amplifier circuit comprises: a push-pull amplifier, a feedback resistor, a first active inductor, and a second active inductor. An input terminal of the push-pull amplifier is connected with an external input terminal.
|Adaptive control mechanisms to control input and output common-mode voltages of differential amplifier circuits|
An amplifier circuit includes differential input nodes, a differential amplifier stage having differential input terminals and differential output terminals, and an input common-mode voltage adaptation circuit connected between the differential input nodes of the amplifier circuit and the differential input terminals of the differential amplifier stage. During an input common-mode adaptation phase, the input common-mode voltage adaptation circuit forces the differential input terminals of the differential amplifier stage to a common-mode voltage equal to an adaptive reference voltage, independent of a common-mode voltage applied to the differential input nodes of the amplifier circuit during the input common-mode adaptation phase.
|Wireless audio coupler and amplifier for mobile phone, tablet device, mp3 player and the like|
An electronic amplifier device amplifies magnetic audio signals emanating from a portable electronic device placed thereon. The electronic amplifier device includes a housing having a designated area for placement of the portable electronic device thereon, an amplifier circuit, and at least one loudspeaker electrically coupled to the amplifier circuit.
|Circuit interrupter providing ground fault protection and systemincluding the same|
A circuit interrupter includes a trip actuator configured to cooperate with an operating mechanism to trip open separable contacts. The circuit interrupter also includes a ground fault sensor configured to sense a difference between a current through a first electrical conductor and a current through a second electrical conductor and to output an output current based on the sensed difference and a ground fault amplifier circuit configured to convert the output current to an output voltage.
|Touch panel control circuit|
A voltage generating unit includes an output transistor arranged as a first-terminal side extension of a path that includes a first terminal, a first resistive film, and a second terminal, and is configured to apply a first bias voltage to the first terminal. A current detection unit includes a detection transistor connected to the output transistor such that they form a current mirror circuit, a detection resistor arranged on a path of the detection transistor, and an amplifier circuit configured to amplify the difference between a voltage drop across a detection resistor and a predetermined voltage, and to output the difference thus amplified as a value which represents a panel current..
|Semiconductor device and offset voltage correcting method|
A semiconductor device includes: an amplifier circuit that has an inverting input terminal, a non-inverting input terminal, and an output terminal; a first variable voltage source that generates a first bias voltage having a voltage value corresponding to a first set value; a second variable voltage source that generates a second bias voltage having a voltage value corresponding to a second set value; a first resistor whose one end is connected to the inverting input terminal; a second resistor that is connected between the output terminal and the inverting input terminal; a third resistor whose one end is connected to the non-inverting input terminal; and a fourth resistor that is connected between the second variable voltage source and the non-inverting input terminal. The first bias voltage is provided to the other end of the first resistor.
|Amplifier-embedded pressure sensor|
An amplifier-embedded pressure sensor includes: a pressure-detecting element which detects the differential pressure between the fluid and the space where the pipe including a fluid passage of the fluid is installed, and outputs the pressure signal; an amplifier circuit board having an amplifier circuit for amplifying the pressure signal; a housing to which the pressure-detecting element is fixed; and a separation part which is fixed to the housing and separates a space inside the housing into a first space where the pressure-detecting element is disposed and a second space where the amplifier circuit board is disposed. The housing includes an inflow port for letting cooling gas for cooling the amplifier circuit board flow into the second space and a discharge port for discharging the cooling gas from the second space..
A sense amplifier circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first resistive device, and a second resistive device. The first resistive device is coupled to a first data line and to a drain of the third transistor.
An amplifier circuit comprises an input, for receiving an input signal to be amplified; a preamplifier, for amplifying the input signal based on a variable gain; a power amplifier for amplifying the signal output from the preamplifier; and a variable voltage power supply for supplying one or more supply voltages to the power amplifier. The supply voltages are adjusted based on the variable gain or the input digital signal.
|Single stage switching power amplifier with bidirectional energy flow|
A switching amplifier realizes bidirectional energy flow and combines switching and power amplification into one single stage so as to increase system efficiency. The modulator circuit of the amplifier receives and modulates an input signal, and generates and outputs modulated driver signals, which are used by the power driver circuit to generate signals to drive switching transformers of an amplifier circuit of the amplifier, and control signals, which are used to control an output generator circuit so as to allow individual inductors across the load by enabling current flowing through the load to have a path to ground.
|Amplifier and optical receiver|
An amplifier circuit includes: a first transistor and a second transistor of which collectors/drains are coupled to a first power-source via a first load-impedance-element and the first power-source via a second load-impedance-element, respectively; a gain-adjustment-resistance-element that is connected to an emitter/source of the first transistor and an emitter/source of the second transistor; a first current-source and a second current-source that are connected to the emitters/the sources of the first transistor and the second transistor respectively, and a second power-source; a third transistor and a fourth transistor of which collectors/drains are connected to the first power-source and bases/gates are connected to the first load-impedance-element and the second load-impedance-element, respectively; a first feedback-resistance-element that is connected to a base/gate of the first transistor and an emitter/source of the third transistor; and a second feedback-resistance-element that is connected to a base/gate of the second transistor and an emitter/source of the fourth transistor.. .
A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts.
|Microphone preamplifier circuit|
A microphone preamplifier circuit (60) is described, adapted to be connected to a microphone circuit (mcd), the microphone circuit (mcd) comprising a microphone (3) and at least one output node (mo, mo′). The microphone preamplifier circuit (60) comprises a preamplifier (pa) comprising: —at least one input node (10, 10′) adapted to be connected to said output node (mo, mo′); —an operational amplifier (oa) comprising at least one input (20, 20′) and at least one output (21, 21′); —at least one input dc decoupling capacitor (cd, cd′) connected between said input node (10, 10′) and said first input of the operational amplifier (20,20′); at least one feedback capacitor (c2a, c2a′) connected between the input (20,20′) and the output (21, 21′) of the operational amplifier (oa) in order to set together with said input dc decoupling capacitor (cd, cd′) a gain value of the preamplifier circuit (60); —a first (40, 40′) and a second feed node (41, 41′) adapted to be fed by a first (vcimin) and a second (vcm) bias voltage respectively.
|Amplifier circuit and methods of operation thereof|
A signal amplifying circuit and associated methods and apparatuses, the circuit comprising: a signal path extending from an input terminal to an output terminal, a gain controller arranged to control the gain applied along the signal path in response to a control signal; an output stage within the signal path for generating the output signal, the output stage having a gain that is substantially independent of its supply voltage, and a variable voltage power supply comprising a charge pump for providing positive and negative output voltages, the charge pump comprising a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage.. .
The present invention discloses a sensing circuit including a sensing device, a first amplifier circuit, a high-pass filter, a second amplifier circuit and a determination circuit. The sensing device produces a sensing signal.
|Display drive circuit, display device and method for driving display drive circuit|
A source driver (20) includes: a first amplifier circuit and a second amplifier circuit each amplifying either one of input signals that are in-phase and antiphase; and a switching control circuit (29) which supplies an offset switching signal (4) for switching the input signals, the switching control circuit (29) supplying the offset switching signal (4) having a higher frequency than a horizontal synchronization signal. This provides a display drive circuit capable of enhancing a display quality while preventing a flicker from occurring in an entire display screen..
A integrated doherty amplifier circuit comprising a main input terminal, a peak input terminal and an output terminal, a main input conductor and a peak input conductor that are offset from one another in a first direction, the main and peak input conductors extend in a second direction that is perpendicular to the first direction, and wherein an input end of the main input conductor is coupled to the main input terminal and an input end of the peak input conductor is coupled to the peak input terminal, an output conductor that extends in the second direction, an output end of the output conductor is coupled to the output terminal, a main amplifier stage extends in the second direction and has a main stage input and a main stage output, a peak amplifier stage extends in the second direction and has a peak stage input and a peak stage output.. .
|Hall electromotive force signal detection circuit and current sensor thereof|
The present invention relates to a hall electromotive force signal detection circuit and a current sensor thereof each of which is able to achieve excellent wide-band characteristics and fast response as well as high accuracy. A difference calculation circuit (15) samples a component synchronous with a chopper clock generated by a chopper clock generation circuit (14), out of an output voltage signal of a signal amplifier circuit (13), at a timing obtained from the chopper clock, so as to detect the component.
An amplifier circuit includes first and second amplification units. A first detection electrode and a high impedance circuit are connected to the input terminal of the first amplification unit.
|Sense amplifier circuit|
A sense amplifier circuit includes first and second signal lines and first and second inverters. Each inverter includes an input terminal, an output terminal, and a power source terminal.
|Solid-state imaging device, imaging device, and signal reading method|
This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel..
|Circuit structure for achieving adaptive function in class-d audio power amplifier circuit|
Disclosed is a circuit structure for implementing an adaptive function in a class-d audio power amplifier circuit, comprising an operation amplifier, a pulse width modulator and a driver stage that are sequentially and serially connected, an input terminal of the operation amplifier being connected to an external audio signal output terminal, and an output terminal of the driver stage being connected to a loudspeaker and connected to the input terminal of the operation amplifier via a feedback loop. The circuit structure further comprises: one or a plurality of a carrier adaptive circuit, a frequency adaptive circuit, a driver adaptive circuit, a temperature adaptive circuit..
An integrated power amplifier circuit is disclosed. The circuit comprises: first and second amplifiers fabricated on one or more dies, the one or more dies being mounted on a support structure; a first set of one or more connection elements connected to the first amplifier and passing above a portion of the support structure; and a second set of one or more connection elements connected to the second amplifier and passing above a portion of the support structure.
An amplifier circuit includes an amplifier circuit that emitter-grounds a first transistor that amplifies an input signal; and an emitter-grounded feedback circuit in which a collector of the first transistor is connected to an output line of the amplifier circuit and a base is wiring-connected only to the output line by using a resistor.. .
|Linearized high-ohmic resistor|
Representative implementations of devices and techniques provide a linearized high-ohmic resistor. In an example, a quantity of serially connected nonlinear impedances is arranged as a resistance.
|Amplifier circuit and feedback circuit|
An amplifier circuit whose frequency response has almost no soft knee characteristic or no peak when inverting input capacitance csin varies and when feedback capacitance cf is a fixed value of small capacitance, and a feedback circuit is provided. The amplifier circuit includes a plurality of amplifiers each of which negative feedback is provided to and which are connected in series, and a feedback means (feedback circuit) which is connected to an output side of an amplifier near output of the amplifier circuit and an input side of an amplifier near input of the amplifier circuit.
|Integrated low-noise sensing circuit with efficient bias stabilization|
An integrated low-noise sensing circuit with efficient bias stabilization in accordance with the present invention comprises a first capacitance sensing element, a second capacitance sensing element, a sub-threshold transistor and an amplifier circuit wherein the first stage is an input transistor. The second capacitance sensing element is connected to the first capacitance sensing element.