AD8394ACPZ-R7

Overview

The AD8394ACPZ-R7 is a quad operational amplifier designed for ADSL/ADSL2+ dual-channel central office line drivers. It operates on dual supplies from ±6 V to ±12 V or single supplies from 12 V to 24 V. The device delivers high output current with low power consumption, dissipating 700 mW while driving a 20.4 dBm ADSL2+ signal. It features a slew rate of 300 V/μs and achieves an MTPR down to −70 dBc.

Feature Summary

• Four current feedback amplifiers optimized for ADSL/ADSL2+ central office line driver applications
• Three active power modes plus shutdown controlled by two digital inputs (PD0 and PD1)
• High output voltage swing and current drive capability suitable for heavy loads
• Low distortion performance with MTPR down to -70 dBc

Applications

• ADSL/ADSL2+ central office line drivers
• xDSL line drivers
• DAC output buffers
• Medical instrumentation requiring high peak current

Procurement Notes

Verify the obsolete status indicated in the datasheet revision Sp0 before procurement planning. Confirm that the LFCSP package matches the required PCB footprint. Ensure design compatibility with the specified supply voltage ranges and digital control logic for power mode selection.

Selection Notes

Select this component when four independent high-output-current amplifiers are needed within a single package. It is specifically suited for xDSL systems requiring low distortion and high slew rates. Consider the thermal performance of the LFCSP package for heat dissipation requirements in dense layouts.

Part Context

This part belongs to the AD8394 family of low-power, high-output current quad op amps. It is distinct from other Analog Devices amplifiers by its specific optimization for DSL line driving and its multi-mode power management capabilities via digital pins.

Replacement Considerations

The datasheet marks the AD8394 as obsolete. No direct public substitutes are listed in the provided documentation. Designers should consult Analog Devices for current replacement recommendations or alternative components with similar electrical characteristics.

FAQ

How is the power consumption managed?

The AD8394 offers three active power modes plus a shutdown mode, selectable via two digital inputs (PD0 and PD1), allowing for low leakage current in shutdown.

What is the maximum slew rate?

The device features a high speed with a slew rate of 300 V/μs.

Can it operate on a single supply?

Yes, it supports single-supply operation from 12 V to 24 V, in addition to dual-supply operation from ±6 V to ±12 V.