ICL7650SCPA-1Z

Overview

The ICL7650SCPA-1Z is a single-channel super chopper-stabilized operational amplifier manufactured by Renesas Electronics. It features a gain-bandwidth product of 2 MHz and a slew rate of 2.5 V/us. The device guarantees a maximum input offset voltage of 5 uV and an input bias current of 10 pA. Operating supply voltages range from 2.25 V to 8 V for dual supplies, or 4.5 V to 16 V for single supplies. It delivers an output current of 30 mA per channel with a quiescent current of 3 mA. Key performance metrics include a common-mode rejection ratio of 140 dB and a power-supply rejection ratio of 120 dB. The component is housed in an 8-pin PDIP package.

Feature Summary

• Super chopper-stabilized architecture ensures exceptionally low input offset voltage and minimal drift over time and temperature.
• CMOS circuitry eliminates traditional chopper amplifier issues such as intermodulation effects and chopping spikes.
• Integrated clamp circuit prevents overload recovery problems and allows comparator use.
• Direct replacement capability for industry-standard ICL7650 devices with improved electrical characteristics.

Applications

• Precision sensor signal conditioning
• Low-level DC amplification
• High-impedance measurement circuits

Procurement Notes

Verify the specific suffix -1Z against the manufacturer's current datasheet to confirm RoHS compliance and lead-free status. Ensure the PDIP-8 package matches the target PCB footprint. Confirm that the commercial temperature range (0°C to +70°C) aligns with the application environment requirements before finalizing procurement.

Selection Notes

Select this component when ultra-low offset voltage and stability are critical. The 2 MHz bandwidth supports moderate-speed applications requiring high DC accuracy. Verify that external nulling capacitors are included in the design, as they are mandatory for the chopper stabilization function. Consider the 30 mA output drive capability for load requirements.

Part Context

This part belongs to the ICL7650 series of chopper-stabilized operational amplifiers originally developed by Intersil and now produced by Renesas. The series is designed for precision analog applications where traditional op-amps suffer from high offset and drift. The SC variant denotes the super chopper-stabilized version with enhanced specifications compared to earlier generations.

FAQ

What external components are required for operation?

Two external capacitors are required to store correcting potentials on the amplifier nulling inputs. These are the only external components necessary for the chopper stabilization function.

Does this device have a shutdown feature?

No, the ICL7650SCPA-1Z does not include a shutdown pin or feature.