|| List of recent Amplifier Circuit-related patents
| Matching network for transmission circuitry|
The present disclosure relates to transmission circuitry of a wireless communication device. The transmission circuitry includes power amplifier circuitry, an output matching network, and impedance control circuitry.
| Passive bypass for network extending|
In one or more embodiments, a cellular signal is received and directed to a path bypassing active amplifier circuitry. This may be in response to the active amplifier circuitry being non-operational (e.g., in a fault state) or detecting that an rf environment does not necessitate amplification.
| Amplifier circuit and wireless communication equipment|
A quadrature modulation error is compensated without providing an additional feedback loop for detecting quadrature modulation error. An amplifier circuit includes: a quadrature modulator; an amplifier that amplifies a quadrature-modulated signal; a distortion compensation section that compensates distortion to be caused in the amplifier based on first compensation coefficients; a quadrature modulation error compensation section that compensates for a quadrature modulation error; an updating section that updates second compensation coefficients for compensating the quadrature modulation error; an error estimation section that estimates an error of the quadrature modulation error; and a prediction section that calculates a prediction value of an output of the amplifier after updating of the second compensation coefficients.
| Reception device and reception method|
A reception device and corresponding method for maintaining a high dynamic range of an ad converter circuit and preventing excessive input to the ad converter circuit is disclosed. For example, a reception device includes a variable gain amplifier circuit that amplifies an input analog signal with a gain controlled by a predetermined control signal, an analog-to-digital converter circuit an overload detector circuit with the same frequency characteristic as the analog-to-digital converter circuit.
| External programmable dfe strength|
A decision feedback equalizer is disclosed. The decision feedback equalizer comprises an amplifier circuit and a latch.
| Power amplifier with variable output impedance|
A power amplifier circuit, comprising: an amplifier for receiving an input signal to be amplified; a power input for coupling the amplifier to a power supply; and a transformer for providing the amplified signal from the amplifier to a load, comprising a primary inductor and a secondary inductor. The power amplifier circuit is characterized by: a first capacitor coupled in parallel with the primary inductor; and a second capacitor coupled in parallel with the secondary inductor; wherein at least one of the first and second capacitors has a variable capacitance..
| Quasi-broadband doherty amplifier with associated capacitor circuit|
An amplifier provides a first amplifier circuit (16), a second amplifier circuit (17), a first hybrid-coupler circuit (18) and a termination (3). The hybrid-coupler circuit (18) provides an output terminal (13) and an insulation terminal (12).
| Electric charge detection circuit|
Ends on one side of physical quantity detection sensors formed of any of an electric charge generation-type sensor and a capacitance change-type sensor can be connected to negative electrode input terminals of a differential amplifier circuit, and ends on the other side are connected to positive electrode input terminals of the differential amplifier circuit. A feedback resistor and a feedback capacitor are connected in parallel between the negative electrode input terminal and an output terminal of the differential amplifier circuit, and a cancel resistor and a cancel capacitor are connected in parallel between a reference voltage and the positive electrode input terminal of the differential amplifier circuit.
| Radiation image pickup device|
A radiation image pickup device includes: an image pickup section having a plurality of pixels and generating an electric signal according to incident radiation, the plurality of pixels each including a photoelectric conversion element and one or a plurality of transistors of a predetermined amplifier circuit; and a correction section subjecting signal data of the electric signal obtained in the image pickup section to predetermined correction process. The correction section makes a comparison between measurement data obtained by measuring an input-output characteristic of the amplifier circuit in each of the plurality of pixels and initial data on the input-output characteristic, and performs the correction process by the pixel individually, by using a result of the comparison..
A source amp output circuit (10) is provided with a switching circuit (17) for carrying out the following operation. That is, in a case where a polarity is reversed, the switching circuit (17) disconnects a data signal line (s(m)) from output terminals of a positive amplifier circuit (15) and a negative polarity amplifier circuit (16) each included in the source amp output circuit (10), and then connects the data signal line s(m) to a power supply which is in a power supply voltage range (vdd1 to vdd3) of the positive polarity amplifier circuit (15) or to a power supply which is in a power supply voltage range (vdd2 to vdd4) of the negative polarity amplifier circuit (16)..
|Techniques for sensing a semiconductor memory device|
Techniques for sensing a semiconductor memory device are disclosed. In one embodiment, the techniques may be realized as a semiconductor memory device comprising a plurality of memory cells arranged in an array of rows and columns and data sense amplifier circuitry coupled to at least one of the plurality of memory cells.
|Power management architecture for modulated and constant supply operation|
A power management system, which includes a parallel amplifier circuit and a switch mode power supply converter, is disclosed. The switch mode power supply converter cooperatively operates with the parallel amplifier circuit to form the power management system.
|Power amplifier circuit|
A power amplifier circuit, comprising: a final stage, comprising first and second amplifying elements for amplifying an input signal; and a driver stage, for providing the input signal to the final stage. The circuit is characterized by a first capacitor coupled between an input of the first amplifying element and an output of the second amplifying element; and a second capacitor coupled between an input of the second amplifying element and an output of the first amplifying element..
|Power amplifier circuit|
A power amplifier circuit, comprising: an input for receiving an input signal to be amplified; a power supply; an amplifier, coupled to the input and the power supply; and a cascode device coupled between the power supply and the amplifier. The circuit is characterized by: a first current source coupled between the input and the amplifier, configured to provide a biasing current which is proportional to absolute temperature; and a second current source for controlling the cascode device, configured to provide a current which is complementary to absolute temperature (ctat)..
|Readout integrated circuit for dynamic imaging|
A sampling circuit for dynamic imaging is provided. Specifically, embodiments of the present invention relate to a readout integrated circuit (roic) for dynamic imaging and a related image sensor.
|Sense amplifier circuit for nonvolatile memory|
A sense amplifier circuit for a nonvolatile memory that includes a first amplifier to perform a switching operation to output a first signal on a sense amplifier based logic (sabl) node depending on the state of a sensing enable signal, a second amplifier to perform a switching operation to output a second signal on the sabl node depending on the state of the sensing enable signal, a current mirror that sinks current on the sabl node depending on the sensing enable signal and a bit line signal, and an inverter arranged to output the signal on the sabl node as a data signal.. .
|Nonvolatile memory device and method for voltage trimming thereof|
A non-volatile semiconductor storage device includes memory blocks that each includes multiple memory strings. A bit line connects to an end of each string in the memory blocks and to a sense amplifier circuit which includes a first transistor.
|Operational amplifier with improved frequency compensation|
An operational amplifier includes an operational amplifier circuit having at least one output node and an output stage coupled to the output node, the output stage containing an output and first mos transistor employed in a common source amplifier mode, a frequency compensation capacitor coupled between the output of the output stage and the gate of the first transistor circuit by means of a second mos transistor employed in a common gate amplifier mode. The other node of the capacitor and the output of the output stage are coupled to the amplifier output node with a resistor..
|Digitally controlled high speed high voltage gate driver circuit|
The present invention relates to semiconductor technology. In particular, the present invention relates to high-speed, high voltage switching for a high voltage generator for an x-ray system.
|Soft-start control techniques for a switched-mode power supply|
A power supply system including switched-mode power supply circuitry configured to generate a dc output voltage from a dc input voltage and soft-start feedback circuitry configured to control the switched-mode power supply circuitry to generate a predefined output voltage during a soft-start period of operation. The soft-start feedback circuitry includes a controllable current source configured to generate a reference current and a reference voltage, wherein the reference current is based on a difference between the reference voltage and a feedback voltage proportional to the output voltage, and amplifier circuitry configured to compare the feedback voltage with the reference voltage and generate a control signal to control the operation of the switched-mode power supply during a soft-start period of operation..
|Preamplifier circuit for a microelectromechanical capacitive acoustic transducer|
Described herein is a preamplifier circuit for a capacitive acoustic transducer provided with a mems detection structure that generates a capacitive variation as a function of an acoustic signal to be detected, starting from a capacitance at rest; the preamplifier circuit is provided with an amplification stage that generates a differential output signal correlated to the capacitive variation. In particular, the amplification stage is an input stage of the preamplifier circuit and has a fully differential amplifier having a first differential input (inp) directly connected to the mems detection structure and a second differential input (inn) connected to a reference capacitive element, which has a value of capacitance equal to the capacitance at rest of the mems detection structure and fixed with respect to the acoustic signal to be detected; the fully differential amplifier amplifies the capacitive variation and generates the differential output signal..
|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 it uses a high voltage heterojunction bipolar transistor (hvhbt) power amplifier to achieve a carrier amplifier with the doherty circuit structure, and uses a high electron mobility transistor (hemt) power amplifier to achieve 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..
|Power amplifier device and power amplifier circuit thereof|
The present invention relates to a power amplifier apparatus and power amplifier circuit thereof, and the power amplifier circuit uses the doherty circuit structure, and the power amplifier circuit uses high voltage heterojunction bipolor transistor (hvhbt) power amplifiers to achieve a carrier amplifier and a peak amplifier of the doherty circuit structure. The power amplifier apparatus and power amplifier circuit thereof in the present invention improves the efficiency of the power amplification..
|Power amplifier apparatus and power amplifier circuit|
The present invention relates to a power amplifier apparatus and a power amplifier circuit. The power amplifier circuit uses a doherty circuit structure, uses a high electron mobility transistor (hemt) power amplifier to implement a carrier amplifier with the doherty circuit structure, and uses a laterally diffused metal oxide semiconductor field effect transistor (ldmos) to implement a peak amplifier.
|Multimode differential amplifier biasing system|
Differential power amplifier circuitry includes a differential transistor pair, an input transformer, and biasing circuitry. The base contact of each transistor in the differential transistor pair may be coupled to the input transformer through a coupling capacitor.
|Sense amplifier circuit and memory device including the same|
A sense amplifier circuit includes a first pull-up transistor configured to pull-up drive a data bar line in response to a voltage of a data line, a first pull-down transistor configured to pull-down drive the data bar line in response to the voltage of the data line, and to receive the voltage of the data line through a back gate of the first pull-down transistor, a second pull-up transistor configured to pull-up drive the data line in response to a voltage of the data bar line, and a second pull-down transistor configured to pull-down drive the data line in response to the voltage of the data bar line, and to receive the voltage of the data bar line through a back gate of the second pull-down transistor.. .
Provided is a voltage regulator including an overcurrent protection circuit using a simple circuit. The voltage regulator includes the overcurrent protection circuit including: a first sense transistor having a gate connected to an output terminal of an error amplifier circuit and a drain connected to a sense resistor; a second sense transistor having a gate connected to the output terminal of the error amplifier circuit; and a control transistor having a gate connected to an output terminal of a control circuit, a source connected to a drain of the second sense transistor, and a drain connected to the sense resistor, in which the control transistor is turned on in response to a detection signal output by the control circuit until a reference voltage exceeds a predetermined voltage..
|Display device, and method for driving display device|
In order to provide a display device and a method for driving a display device, each of which is capable of repairing a disconnection in a data signal line and further reduces electric power consumption, a display device (1) includes a repair amplifier control section (14) for causing a repair amplifier circuit (12) to operate at a low-performance level during any period within a period from when scanning of pixels in the display area in the display device (1) is finished to when next scanning is started.. .
|Amplifier circuits and methods|
A chopper amplifier circuit for sensing hall voltage with reduced offsets includes a hall sampling circuit with a first switching circuit for selectively coupling each of four nodes of a hall plate to either a power source or a ground terminal. The circuit also includes a differential amplifier and a second switching circuit configured for selectively coupling each of the four nodes to inputs of the differential amplifier.
An auxiliary wire, which can be connected to each of a plurality of data signal lines (sn), is constituted by (i) a first auxiliary wire (17) provided so as to intersect the plurality of data signal lines (sn) on a side where end parts of the respective plurality of data signal lines (sn) are connected to a data signal line driving circuit (4) and (ii) a second auxiliary wire (18) provided so as to intersect the plurality of data signal lines (sn) on a side of the other end parts of the respective plurality of data signal lines (sn). Between the first auxiliary wire (17) and the second auxiliary wire (17), there are provided (i) a positive-polarity amplifier circuit (6) for receiving a positive data signal from the data signal line driving circuit (4) and (ii) a negative-polarity amplifier circuit (7) for receiving a negative data signal from the data signal line driving circuit (4).
|De-multiplexing a radio frequency input signal using output transformer circuitry|
The present disclosure relates to de-multiplexing at least one rf input signal feeding rf power amplifier circuitry to create multiple de-multiplexed rf output signals, which may be used to provide rf transmit signals in an rf communications system. Output transformer circuitry is coupled to outputs from the rf power amplifier circuitry to provide the de-multiplexed rf output signals, which may support multiple modes, multiple frequency bands, or both.
|Semiconductor memory device|
A semiconductor memory device includes a sense amplifier circuit region including first wells disposed in a first direction, a driving circuit region including second wells disposed in a second direction, and a conjunction region disposed at an intersection region of the sense amplifier circuit region and the driving circuit region, a part of each of the first wells extending from the sense amplifier circuit region into the conjunction region, and the second wells being outside of the conjunction region.. .
|Memory device and a method of operating such a memory device in a speculative read mode|
A memory includes an array of memory cells with each memory cell coupled to an associated pair of bit lines. Read control circuitry is configured to activate a number of addressed memory cells in order to couple each addressed memory cell to its associated pair of bit lines.
|Photoelectric smoke detector and process for testing the photoelectric smoke detector|
A photoelectric smoke detector 1 for detecting smoke particles 4 is disclosed, the smoke detector 1 comprising: a light emitting element 5, a light receiving element 6 for receiving light 8 emitted by the light emitting element 5 and scattered by the smoke particles 4 and for outputting a detection signal 12 obtained by photoelectrical converting the received light 10, 11, an amplifier circuit 13 for amplifying the detection signal 12 and providing an amplified output signal 14, wherein the amplified output signal 14 may be divided into an offset-signal 20 and an amplified detection signal 21, whereby the photoelectric smoke detector 1 is adapted to operate in a pulsed mode, so that the detection signal 12 comprises high-frequency components, whereby the amplified detection signal 21 is determined by high-frequency components of the detection signal 12 and that the offset-signal 20 is determined by low-frequency components of the detection signal 12 and/or by low-frequency components of at least an intermediate signal based on the detection signal 12, and whereby the amplifier circuit 13 is adapted to transfer the high-frequency components with a higher gain and to transfer the low-frequency components with a lower gain in order to improve the signal ratio between the amplified detection signal 21 and the off-set-signal 20.. .
|Amplifiers with enhanced power supply rejection ratio at the output stage|
An amplifier circuit is disclosed. The amplifier circuit includes a detection circuit, a control amplifier circuit and an output stage.
|Amplifier circuit, method and mobile communication device|
An amplifier circuit includes a gain controller, a first amplifier, and a second amplifier which is coupled in series to the first amplifier, the second amplifier comprising a plurality of amplifying units. The gain controller is configured to receive a desired gain value and provide, based on the received desired gain value, a gain adjust signal to the first amplifier, and activate, based on the received desired gain value, a certain combination of amplifying units of the plurality of amplifying units of the second amplifier, such that a combined gain of the first amplifier and the active amplifying units of the second amplifier corresponds to the received desired gain value.
|Semiconductor integrated circuit apparatus and radio-frequency power amplifier module|
In a semiconductor integrated circuit apparatus and a radio-frequency power amplifier module, a log detection portion including multiple-stage amplifier circuits, multiple level detection circuits, adder circuits, and a linear detection portion including a level detection circuit are provided. Output current from the log detection portion and output current from the linear detection portion are multiplied by different coefficients and the results of the multiplication are added to each other to realize the multiple detection methods.
|System and method for reducing desensitization of a base station transceiver for mobile wireless repeater systems|
A repeater system including bi-directional amplifier circuitry that is configured for repeating signals between at least one device and a first signal source. Receiver circuitry is coupled with the amplifier circuitry provides at least one signal associated with at least one of a device or the first signal source or a second signal source.
|Pon video overlay amplifier circuit|
An amplifier circuit in a pon and a method for using the same. The amplifier circuit may be used, for example in an onu of the pon.
|Amplifier circuit for a two-wire interface|
The invention relates to an amplifier circuit (10a, 10b) for a two-wire interface, comprising a first current path (1), comprising a voltage-controlled current source (t1) having a gate (gt1), which is connected to an input connection (e1) of the amplifier circuit. A second current path (2) of the amplifier circuit comprises a voltage-controlled current source (t2), which is connected in series with the second resistor (r2).
|Microphone amplifier circuit|
The invention provides a microphone amplifier circuit which enhances the snr (signal noise ratio) and expands the dynamic range by reducing the noise level. A microphone amplifier circuit includes a preamplifier which amplifies an audio signal from a capacitor microphone, a level detection circuit which outputs a level detection signal when the level of the audio signal is in the vicinity of the noise level of the microphone amplifier circuit, and an attenuator which attenuates the level of the audio signal outputted from the preamplifier in response to the level detection signal.
|Backlight control circuit with under current detection and start-up control|
The present invention discloses a backlight control circuit, comprising: a voltage supply circuit for receiving an input voltage and generating an output voltage under control by a control signal; at least one voltage comparison path respectively coupled to at least one light emission device path; a voltage operative amplifier circuit for generating the control signal according to a lowest voltage on the at least one voltage comparison path; and at least one under current detection circuit for detecting whether a corresponding one of the at least one light emission device path is in an under current status, whereby when anyone of the under current detection circuits detects the under current status, it sends an exclusion signal excluding a corresponding one of the at least one voltage comparison path from being an effective input of the voltage operative amplifier.. .
|Sense amplifier circuitry for resistive type memory|
Example embodiments include a resistive type memory sense amplifier circuit including differential output terminals, first and second input terminals, a pre-charge section, and other components arranged so that current is re-used during at least a “set” or “amplification” stage of the sense amplifier circuit, thereby reducing overall current consumption of the circuit, and improving noise immunity. A voltage level of a high-impedance output terminal is caused to swing in response to a delta average current between a reference line current and a bit line current.
|Operational amplifier with latching state suppression|
An embodiment of an amplifier circuit is proposed. The amplifier circuit includes an amplifier stage having at least one input terminal for receiving an input signal and at least one output terminal for providing an output signal being amplified with respect to the input signal.
|Microwave excursion detection for semiconductor processing|
Devices and methods are provided for monitoring low-level microwave excursions from a uv curing system to determine if equipment is damaged, such as screen tears or improper assembly of uv lampheads. A radio frequency (rf) detector may be used to detect microwaves in a range of about 0.2-5 mw/cm2, wherein the rf detector comprises an antenna with a hoop shaped portion, a circuit board having a diode detector and an amplifier circuit, a housing, and a bracket coupled to the housing that is suitable for coupling the rf detector to the uv curing system.
|Process-compensated hbt power amplifier bias circuits and methods|
The present disclosure relates to a system for biasing a power amplifier. The system can include a first die that includes a power amplifier circuit and a passive component having an electrical property that depends on one or more conditions of the first die.
|Headphone assembly with integralguitar amplifier|
A headphone assembly includes an integral guitar amplifier circuit for direct connection to a guitar.. .
|Circuit for testing buzzer|
A circuit for testing a buzzer includes a microphone, an amplifier circuit, a microprocessor circuit, and a display circuit. The amplifier circuit is configured to amplify an analog signal from the microphone to an amplified signal.
|Agc circuit for an echo cancelling circuit|
An amplifier circuit and a method of amplification using automatic gain control (agc) are disclosed. A method for reducing distortions incurred by an audio signal when being rendered by an electronic device is described.
|Sense amplifier circuit|
A sense amplifier (100) includes first and second inverters (112 and 113). The first inverter has an input terminal (116) and an out_b output node and a first transistor (124).
|Image sensor with hybrid heterostructure|
An image sensor architecture for an active pixel sensor array are separated and arranged vertically in at least two different layers in a hybrid chip structure. The top layer includes the photodiode and amplifier circuitry for each pixel.
|Electron microscope and method of operating the same|
An electron microscope and method of operating an electron microscope (1) has an electron beam source (11) for producing an electron beam, a noise canceling aperture (12) for detecting a part of the beam, an amplifier (42), an effective value calculating circuit (44) for extracting dc components of the output signal from the amplifier (42), a detector (15) for detecting a signal obtained in response to impingement of the beam on a sample (a), a preamplifier circuit (20), an amplifier circuit (30), a dividing circuit (54) for performing a division based on the output signal from the amplifier circuit (30) and on the output signal from the amplifier (42), and a multiplier circuit (58) for performing multiplication of the output signal from the dividing circuit (54) and the output from the effective value calculating circuit (44).. .
|Differential amplifier circuit|
A differential amplifier circuit includes a differential amplification unit configured to amplify a difference of an input signal and a reference voltage and generate an output signal and an output bar signal, a current source configured to control an amount of current flowing through the differential amplification unit, and a current control unit configured to control an amount of current of the current source based on a level of the input signal.. .
|Amplifier circuits and modulation signal generating circuits therein|
An amplifier circuit includes a modulation signal generating circuit, a driving stage circuit and an output stage circuit. The modulation signal generating circuit generates a pair of modulation signals according to a pair of differential input signals and a plurality of clock signals.
|Impedance bootstrap circuit for an interface of a monitoring device|
An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit..
|Mult-channel constant voltage and constant current converting controler and apparatus|
A multi-channel constant voltage and constant current converting controller is provided. It comprises a multi-channel balance circuit and an error amplifier circuit.
|Optical transmission circuit and optical transmission/reception circuit module|
An optical transmission circuit comprises a light emitting element and a differential amplifier circuit to which differential input signals are input to modulate an optical output of the light emitting element. The differential amplifier circuit includes a first current source, a first transistor, a second transistor, a third transistor, and a fourth transistor.
|Sense amplifier circuitry for resistive type memory|
Example embodiments include a resistive type memory current sense amplifier circuit including differential output terminals, first and second input terminals, pre-charge transistors, and current modulating transistors coupled directly to the pre-charge transistors. The pre-charge configuration provides high peak currents to charge the bit line and reference line during a “ready” or “pre-charge” stage of operation of the current sense amplifier circuit.
|Apparatus and method for use with an amplifier circuit|
An output network for use with a multi-transistor amplifier circuit comprises n transistors configured to provide a chireix outphasing behaviour. The n transistors coupled to receive different amplitude and/or phase signals relative to a source signal.
In a display portion of a liquid crystal display device, the dead space corresponding to a unit pixel is reduced while the aperture ratio of the unit pixel is increased. One amplifier circuit portion is shared by a plurality of unit pixels, so that the area of the amplifier circuit portion corresponding to the unit pixel is reduced and the aperture ratio of the unit pixel is increased.
|Low noise amplifiers with cascode divert switch for carrier aggregation|
Low noise amplifiers (lnas) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes first and second amplifier circuits and a divert cascode transistor.
|Low noise amplifiers with transformer-based signal splitting for carrier aggregation|
Low noise amplifiers (lnas) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes an amplifier circuit, a transformer, and a plurality of downconverters.
|Biochip and fabrication thereof|
A biochip comprising a plastic substrate, an ic chip, and a sealing cover is disclosed in this invention. The plastic substrate combines the function of sample inlet area, separating structure, micro-fluidic channel, flow resistor, detection area, and capillary pump or suction area.
|Sense amplifier ciruit and semiconductor device|
A single-ended sense amplifier circuit of the invention comprises first and second mos transistors and first and second precharge circuits. The first mos transistor drives the bit line to a predetermined voltage and switches connection between the bit line and a sense node and the second mos transistor whose gate is connected to the sense node amplifies the signal via the first mos transistor.
|Operational transconductance amplifier with increased current sinking capability|
An amplifier circuit includes an input terminal and an output terminal. A current sinking transistor includes a first conduction terminal coupled to the output terminal and a second conduction terminal coupled to a reference supply node.
|Semiconductor device and communication device|
A semiconductor device capable of achieving high speed performance in addition to correction of differential offset and a communication device provided with the semiconductor device are provided. For example, there are provided: a variable gain type differential amplifier circuit vga1 which receives a gain setting signal aset, which amplifies differential input signals inp and inn by a gain indicated by the gain setting signal, and which outputs differential output signals outp′ and otun′; and an offset correcting circuit unit ofcbk1 which cancels an offset voltage (vof and vofo) generated in the vga1.
|Signal level conversion circuit, physical quantity detection device and electronic apparatus|
A signal level conversion circuit 1 includes a first differential amplifier circuit 10 and a second differential amplifier circuit 20. The first differential amplifier circuit 10 multiplies a potential difference between a first input signal and a second input signal by g1 thereby providing an output signal.