Chopper Circuits
|
Last Updated:
June 02, 2021 01:44 PM |
|
|
|
Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:
|
AN9Application Considerations and Circuits for a New Chopper-Stabilized Op Amp
Linear Technology AN9 __ Designed by Jim WilliamsAug 5th, 1986
Chop the Noise Gain to Measure an Op Amp's Real-Time Offset Voltage
04/03/08 EDN-Design Ideas A new method of chopping input noise allows you to measure an op amp's offset voltage in real time__ Circuit Design by Glen Brisebois, Linear Technology, San Jose, CA
Chopped Amplifier exacts only 5 µA
05/22/97 EDN-Design Ideas The chopped amplifier in Figure 1 combines low supply current of 5.5 µA with high accuracy. The offset voltage is 5 µV with a drift of 0.05 µV/°C. The gain exceeds 108, which affords high accuracy, even at large closed-loop gains.__ Circuit Design by Design by Jim Williams, Linear Technology Corp, Milpitas, CA
Chopper Amplifiers Complement a DC Accurate Low-Pass Filter
DN9 Design Notes___ Linear Technology/Analog Devices |
|
|
Chopper-stabilized Amplifier cascade yields 160 to 10,240 programmable gain
11/23/06 EDN-Design Ideas Amplify microvolt-level signals with a minimal-component-count circuit__ Circuit Design by Jerome E Johnston, Cirrus Logic Corp, Austin, TX
Chopping Reduces Reference’s Supply Current
04/10/97 EDN-Design Ideas UPDATED LINK! The 10V precision reference, IC3, in Figure 1 has temperature drift of approximately 0.6 ppm/�C and good long-term stability. However, because of its zener-based design, this reference needs more than 4 mA of supply current. To reduce this current, the circuit in Figure 1 supplies the reference with chopped power. This scheme lowers the mean supply__ Circuit Design by Hartmut Henkel, von Hoerner & Sulger GmbH, Schwetzingen, Germany |
|
Signal Chopping Enhances Bridge Performance
06/22/95 EDN-Design Ideas You can implement signal-chopping techniques, such as those found in CMOS
chopper-stabilized amplifiers, at the system level to obtain the offset stability of chopper amplifiers. Moreover, you'll obtain the better noise performance of bipolar amplifiers. The bridge measurement system in Fig 1 uses the MIC4428 driver to "chop" the bridge excitation, with polarity reversal upon command from the system microcontroller (µC). The DG303 multiplexer selects either the bridge output or a voltage proportional to the bridge excitation.__ Circuit Design by Jerome Johnston, Crystal Semiconductor, Austin, TX
Ultra Low Noise Op Amp Combines Chopper & Bipolar Op Amps
DN36 Design Notes __ Linear Technology/Analog Devices |
|
Chopper Circuits |
|
|