ICL7650SCBA-1Z

ICL7650SCBA-1Z is an ICL7650S super chopper-stabilized amplifier in a 8 pin SOIC package. It offers exceptionally low input offset voltage and is extremely stable with respect to time and temperature. It is a direct replacement for the industry-standard ICL7650 offering improved input offset voltage, lower input offset voltage temperature coefficient, reduced input bias current, and wider common mode voltage range. Intersil’s unique CMOS chopper-stabilized amplifier circuitry is user-transparent, virtually eliminating the traditional chopper amplifier problems of intermodulation effects, chopping spikes, and overrange lockup. The chopper amplifier achieves its low offset by comparing the inverting and non-inverting input voltages in a nulling amplifier, nulled by alternate clock phases. Two external capacitors are required to store the correcting potentials on the two amplifier nulling inputs; these are the only external components necessary.

• ow long-term and temperature drifts of input offset voltage
• Maximum input bias current of 10pA
• Extremely wide common mode voltage range from +3.5V to -5V
• Reduced supply current of 2mA
• Minimum output source/sink current
• Extremely high gain of 150dB and high CMRR and PSRR of 140dB
• High slew rate of2.5V/µs
• Wide bandwidth of 2MHz
• Unity-gain compensated, extremely low chopping spikes at input and output
• Clamp circuit to avoid overload recovery problems and allow comparator use