MT-055: Chopper Stabilized (Auto-Zero) Precision …
MT-055TUTORIAL Chopper Stabilized ( auto - zero ) Precision Op amps Chopper AMPLIFIERS For the lowest offset and drift performance, Chopper - Stabilized ( auto - zero ) amplifiers may be the only solution. The best bipolar amplifiers offer offset voltages of 25 V and V/ C drift. Offset voltages less than 5 V with practically no measurable offset drift are obtainable with choppers, albeit with some penalties. A basic Chopper amplifier circuit is shown in Figure 1 below. When the switches are in the "Z" ( auto - zero ) position, capacitors C2 and C3 are charged to the amplifier input and output offset voltage, respectively.
MT-055 TUTORIAL. Chopper Stabilized (Auto-Zero) Precision Op Amps . CHOPPER AMPLIFIERS . For the lowest offset and drift performance, chopper-stabilized (auto-zero) amplifiers may be the
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Text Pages 03-03, Guide, Temperature Sensor Design Guide, CABLE ACCESSORIES, Stability Analysis Of Voltage-Feedback Op, Stability Analysis of Voltage-Feedback Op Amps, Using fully differential op amps as attenuators, Applications, Texas Instruments, Ultralow Distortion, Wide Bandwidth Voltage, Ultralow Distortion, Wide Bandwidth Voltage Feedback Op Amps, Analog Devices