AD8594ARUZ-REEL

Overview

The AD8594ARUZ-REEL is a quad-channel, single-supply operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities with a high output current drive of ±250 mA per channel. The device operates within a supply voltage range of 2.5 V to 6 V and includes a power-saving shutdown mode that reduces total supply current to less than 1 μA when all amplifiers are disabled. Key electrical specifications 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. The component is specified for operation over the industrial temperature range of −40°C to +85°C.

Feature Summary

• Quad-channel architecture with independent master shutdown control reducing standby current significantly
• Rail-to-rail input and output performance enabling full signal swing in single-supply systems
• High output drive capability supporting loads up to ±250 mA
• CMOS technology providing extremely low input bias current suitable for integrator applications

Applications

• Mobile communication handset audio circuits
• PCMCIA and modem line driving interfaces
• Battery-powered instrumentation systems
• LCD display reference level drivers
• Data acquisition sample-and-hold circuits

Procurement Notes

Verify the specific package suffix RU corresponds to the 16-lead TSSOP configuration required for your PCB layout. Confirm the REEL suffix indicates tape and reel packaging rather than tube delivery. Ensure the manufacturing revision matches the design requirements, as specifications may undergo updates. Cross-reference the absolute maximum ratings against your system's supply voltage limits to prevent device damage.

Selection Notes

Select this component when high current drive is necessary alongside low power consumption in portable devices. The quad configuration allows multiple channels to share a single shutdown pin, simplifying control logic compared to dual-channel variants. Consider the thermal resistance characteristics if operating near maximum load currents. Verify that the capacitive load driving stability meets the requirements of the connected circuitry without additional compensation networks.

Part Context

This part belongs to the AD859x family of CMOS single-supply operational amplifiers, which also includes the single-channel AD8591 and dual-channel AD8592. All variants share identical electrical characteristics and shutdown functionality but differ in channel count and package options. The AD8594 specifically provides four amplifiers in a compact surface-mount footprint, making it suitable for space-constrained multi-channel applications.

Replacement Considerations

Public confirmed substitute part numbers: None.