AD8591ARTZ-REEL7

Overview

The AD8591ARTZ-REEL7 is a single-channel CMOS operational amplifier featuring rail-to-rail input and output capabilities with a ±250 mA high output drive current. It operates on a single supply voltage ranging from 2.5 V to 6 V. The device includes a power-saving shutdown mode that reduces total supply current to less than 1 μA, placing outputs in a high-impedance state. Key electrical parameters include a gain bandwidth product of 3 MHz, a slew rate of 5 V/μs at 5 V supply, and an input bias current as low as 5 pA. It is unity-gain stable and immune to output phase reversal.

Feature Summary

• Rail-to-rail input and output operation enables full signal swing in single-supply systems.
• High output drive capability of ±250 mA supports resistive and heavy capacitive loads.
• Power-saving shutdown mode significantly reduces supply current for battery efficiency.
• CMOS architecture provides extremely low input bias currents suitable for precision applications.

Applications

• Mobile communication handset audio
• PCMCIA/modem line driving
• Battery-powered instrumentation
• LCD display reference level drivers

Procurement Notes

Verify the specific ordering suffix ARTZ corresponds to the 6-lead SOT-23 package and REEL7 indicates tape-and-reel packaging. Confirm the component revision matches Rev. B specifications. Ensure the supplier provides documentation verifying the part is manufactured by Analog Devices Inc. Check for RoHS compliance status if required by your assembly process.

Selection Notes

Select this component when a single-supply op amp requires high current drive and rail-to-rail performance. The shutdown feature is critical for portable devices needing extended battery life. Consider the SOT-23 package size for space-constrained designs. Verify that the 3 MHz bandwidth meets the signal frequency requirements of the application.

Part Context

The AD8591 is the single-channel version of the AD859x family, which also includes the dual AD8592 and quad AD8594 variants. All share identical electrical characteristics and the same shutdown functionality principles. The AD8591 specifically utilizes a 6-lead SOT-23 package, distinguishing it physically from the MSOP and SOIC packages used by its dual and quad counterparts.

Replacement Considerations

Direct functional replacements within the same series include the AD8592 (dual) and AD8594 (quad), provided pinout compatibility or circuit redesign is acceptable. Other single-channel amplifiers must be evaluated for matching output current, shutdown features, and rail-to-rail specifications.

FAQ

How does the shutdown mode affect the amplifier outputs?

When the shutdown input is activated, all amplifier outputs enter a high-impedance state, effectively disconnecting them from the load while reducing supply current to less than 1 μA.

Is the AD8591 immune to output phase reversal?

Yes, the AD8591 is designed to be immune to output voltage phase reversal as long as the input voltage remains within the supply voltages of the device.