AD8632ARZ

Overview

The AD8632ARZ is a dual, low-power operational amplifier from Analog Devices. It operates on a single supply voltage ranging from 1.8 V to 6 V. The device features rail-to-rail input and output capabilities, allowing full signal swing across the supply range. It offers a gain-bandwidth product of 5 MHz at 5 V and 4 MHz at 1.8 V. The typical supply current is 225 µA per amplifier at 1.8 V. The unit is housed in an 8-lead SOIC package and is specified for operation over an extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability enables maximum dynamic range at low supply voltages.
• Low power consumption with supply current as low as 225 µA per amplifier at 1.8 V.
• High bandwidth performance with a gain-bandwidth product of up to 5 MHz.
• Extended industrial temperature specification ensures reliable operation in harsh environments.

Applications

• Portable communications equipment
• Sensor interface circuits
• Active filters
• ASIC input drivers
• Battery-powered devices

Procurement Notes

Verify the specific ordering suffix ARZ corresponds to the 8-lead SOIC package variant when sourcing. Confirm that the component meets RoHS compliance requirements if mandated by your assembly process. Ensure the supplier provides documentation verifying the extended industrial temperature range rating. Cross-reference the manufacturer part number to avoid confusion with similar family members like the AD8631 or AD8632ARM.

Selection Notes

Select this component for applications requiring low-voltage operation down to 1.8 V with minimal power draw. The rail-to-rail feature makes it suitable for single-supply systems where maximizing signal swing is critical. Consider its 5 MHz bandwidth for moderate-speed signal processing tasks. Evaluate the 8-lead SOIC package constraints against available board space and thermal dissipation needs.

Part Context

The AD8632ARZ belongs to the AD8631/AD8632 family of precision, low-power operational amplifiers. While the AD8631 is a single-channel device, the AD8632 integrates two identical amplifiers into one package. Both share the same XFCB bipolar process technology, ensuring consistent electrical characteristics such as offset voltage and noise performance across the family.

Replacement Considerations

The AD8632ARM serves as a pin-compatible alternative within the same family, utilizing an 8-lead µSOIC package instead of the standard SOIC form factor. Designers must verify footprint compatibility before substituting between these package types.

FAQ

Does the AD8632 exhibit phase reversal when the input exceeds the supply rails?

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 maximum differential input voltage allowed?

The absolute maximum differential input voltage is ±0.6 V. External series resistors should be used to limit fault currents if this threshold is exceeded.