19-0960; Rev 2; 1/00
Chopper-Stabilized Op Amps
General Description
Maxim’s ICL7650/ICL7653 are chopper-stabilized ampl...
19-0960; Rev 2; 1/00
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. The ICL7650B/ICL7653B are exact replacements for Intersil’s ICL7650B/ICL7653B. These devices have a 10µV max offset
voltage, a 0.1µV/°C max input offset
voltage temperature coefficient, and a 20pA max bias current—all specified over the commercial temperature range. A 14-pin version is available that can be used with either an internal or external clock. The 14-pin version has an output
voltage clamp circuit to minimize overload recovery time.
Features
o ICL7650/53 are Improved Second Sources to ICL7650B/53B o Lower Supply Current: 2mA o Low Offset
Voltage: 1µV o No Offset
Voltage Trimming Needed o High-Gain CMRR and PSRR: 120dB min o Lower Offset Drift with Time and Temperature o Extended Common-Mode
Voltage Range o Low DC Input Bias Current: 10pA o Monolithic, Low-Power
CMOS Design
ICL7650/ICL7650B/ICL7653/ICL7653B
Ordering Information
PART ICL765...