A Study of the Transfer Function of Chopper Amplifiers [PDF]
, 1964 The chopper amplifier is frequently used in several types of d.c and a.c amplifiers as well as in d.c servomechanisms employing a.c control elements. In this paper the transfer function of the chopper amplifier is derived for a sinusoidal input signal ...
MIZUKAMI, Kōichi, HAYASHI, Shigenori
core
A 36μW rail-to-rail-input chopper stabilized amplifier using correlated double sampling
, 2013 This paper describes a chopper stabilized amplifier, obtained using an input chopper for modulation, an AC coupling for offset rejection and a correlated double sampling structure for demodulation, avoiding ripple spurs.
D'Amico S. +5 more
core +1 more source
3.2 A Chopper-Stabilized Amplifier with a Relaxed Fill-In Technique and 22.6pA Input Current
, 2023 In chopper amplifiers, the interaction between the input signal and the chopper clock can cause intermodulation distortion (IMD). This is due to amplifier delay, which causes signal transitions generated by the input chopper to arrive at the amplifier's ...
Rooijers, C.T. (author) +5 more
core +1 more source
EngFor high-voltage signal detection applications, an auto-zero and chopper operational amplifier (OPA) is proposed in this paper. With the auto-zero and chopper technique, the OPA adopts an eight-channel Ping-Pong mechanism to reduce the high-frequency ...
Zhifeng Chen +3 more
doaj +1 more source
On the Mechanical Chopper for the Chopper Amplifier (Part 1) : The Relation Between the Conversion Efficiency and Contact Rate [PDF]
Though the various studies on the chopper amplifier (the contact modulated amplifier) have been reported, but those on the chopper itself are not so many. In the formers, the chopping action is assumed to be an ideal ON - OFF action.
松山, 潔
core +1 more source
A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier
Journal of Electrical and Computer Engineering, 2020 A wide-band and high-resolution transmitter of optical isolation amplifier is proposed for switching power supply isolation and servo motor drive applications. The transmitter is based on the chopper-stabilized technique and sigma delta modulator.
Chengying Chen +3 more
doaj +1 more source
Chopper amplifier circuit with CMOS switches and amplifier FETs
, 1997 of NL 1001231 (C2) The input voltage is fed to the inputs of an operational amplifier via a chopping reversal switchThe CMOS operational amplifier has a current source and a current mirror.
Bakker, A. (author) +1 more
core
A Chopper-Stabilized Amplifier with a Relaxed Fill-In Technique and 22.6pA Input Current
, 2023 In chopper amplifiers, the interaction between the input signal and the chopper clock can cause intermodulation distortion (IMD). This is mainly due to finite amplifier bandwidth, which causes signal-dependent output spikes at the chopping transitions ...
Rooijers, C.T. (author) +2 more
core +1 more source
Design Of Low 1/F Noise Operational Amplifier Cell Using Chopper Stabilization Technique [PDF]
, 2017 Teknik stabilisasi chopper dapat digunakan secara luas untuk input diferensial dan penguat keluaran diferensial dan dapat diimplementasikan sakelar perajang bolak-balik dari amplifier. Sebenarnya, penguat instrumentasi dengan teknik stabilisasi chopper
Eritha, Fadila Norasarin
core
Design of a low offset operational amplifier for current detection
Dianzi Jishu YingyongAiming at the requirement of current detection for operational amplifier performance, a new low offset operational amplifier circuit is proposed. The closed-loop current sampling circuit is composed of low-loss op-amp, PMOS tube and resistor.
Li Xin, Yu Chen, Yang Senlin
doaj +1 more source