AD8632AR

Overview

The AD8632AR is a dual, low-power, rail-to-rail input and output operational amplifier from Analog Devices. It operates on single supplies ranging from 1.8 V to 6 V with a typical supply current of 300 µA per amplifier at 5 V. The device features a gain-bandwidth product of 5 MHz at 5 V and a slew rate of 3 V/µs. It exhibits a maximum input offset voltage of 4 mV and maintains operation across an extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability enables full signal swing at low supply voltages.
• Low power consumption suitable for battery-powered applications.
• High bandwidth and fast slew rate for precision signal processing.
• Extended industrial temperature range ensures reliable performance.

Applications

• Portable communications equipment
• Sensor interface circuits
• Active filters
• ASIC input drivers

Procurement Notes

Verify the package type matches the required footprint, as the AD8632 family includes SOIC and µSOIC variants. Confirm the suffix indicates the correct temperature range and packaging option. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input stage. Cross-reference part numbers carefully to avoid confusion with the single-channel AD8631.

Selection Notes

Select this component when dual amplification is required in a compact space with low voltage constraints. It is appropriate for designs needing rail-to-rail performance without the complexity of dual-supply rails. Consider the 5 MHz bandwidth for moderate-speed signal conditioning tasks. Evaluate thermal dissipation requirements based on the specific PCB layout and ambient conditions.

Part Context

The AD8632AR belongs to the AD8631/AD8632 family of precision operational amplifiers fabricated using Analog Devices' XFCB process. This technology minimizes parasitic capacitance to support high-speed operation. The dual configuration allows for cost-effective implementation of differential stages or multi-channel signal paths in portable devices.

Replacement Considerations

Check for AD8632ARM (µSOIC) if a smaller footprint is needed. Verify compatibility with AD8631 if only one channel is utilized.

FAQ

Does the AD8632 exhibit phase reversal when inputs exceed the supply?

No, the AD8632 does not exhibit phase reversal even if the input signal exceeds the supply voltage by more than 0.6 V.

What is the input bias current characteristic of the AD8632?

The input bias current is typically 250 nA at 25°C and increases to 500 nA over the extended industrial temperature range.