斩波稳零运算放大器 Chopper-Stabilized Op Amps
General Description
Maxim’s ICL7650/ICL7653 are chopper-stabilized amplifiers, ideal for low-level signal processing applications. Featuring high performance and versatility, these devices combine low input offset voltage, low input bias current, wide bandwidth, and exceptionally low drift over time and temperature. Low offset is achieved through a nulling scheme that provides continuous error correction. A nulling amplifier alternately nulls itself and the main amplifier. The result is an input offset voltage that is held to a minimum over the entire operating temperature range.
Features
♦ ICL7650/53 are Improved Second Sources to ICL7650B/53B
♦ Lower Supply Current: 2mA
♦ Low Offset Voltage: 1µV
♦ No Offset Voltage Trimming Needed
♦ High-Gain CMRR and PSRR: 120dB min
♦ Lower Offset Drift with Time and Temperature
♦ Extended Common-Mode Voltage Range
♦ Low DC Input Bias Current: 10pA
♦ Monolithic, Low-Power CMOS Design
Applications
Condition Amplifier
Precision Amplifier
Instrumentation Amplifier
Thermocouples
Thermistors
Strain Gauges
