AD8392AACPZ-R2

Overview

The AD8392AACPZ-R2 is a low-power, high-output current quad operational amplifier configured as a dual-channel ADSL/ADSL2+ line driver. It operates from single or dual supplies ranging from 10 V to 24 V. Key electrical parameters include a differential slew rate of 515 V/µs, a small-signal bandwidth of 37 MHz, and a linear output current capability of 500 mA. The device features on-chip common-mode voltage generation and four programmable power modes.

Feature Summary

• Integrated on-chip common-mode voltage generation for simplified circuit design
• Four user-programmable power management states including shutdown via digital logic pins
• High peak output drive current of 500 mA with large differential voltage swing
• Low distortion performance suitable for multitone DSL applications

Applications

• ADSL and ADSL2+ central office line drivers
• XDSL line driver interfaces
• High-speed analog front-end driving stages

Procurement Notes

Verify the specific ordering suffix R2 corresponds to the reel packaging format required for automated assembly processes. Confirm that the LFCSP-32 package variant matches the thermal and footprint requirements of the target PCB layout. Ensure compatibility with the specified operating temperature range of -40°C to +85°C for the intended environment.

Selection Notes

Select this component when designing ADSL/ADSL2+ central office interfaces requiring integrated common-mode generation. The LFCSP-32 package offers superior thermal dissipation compared to TSSOP variants for high-density layouts. Consider the available bias modes to optimize power consumption during idle periods while maintaining the necessary 500 mA drive capability for line signaling.

Part Context

This part belongs to the AD8392A family of current feedback amplifiers designed specifically for xDSL systems. The AACPZ-R2 designation indicates the Lead Frame Chip Scale Package (LFCSP) version with RoHS compliance and reel packaging. It serves as a specialized solution for driving telephone lines with high power efficiency and low signal distortion.

Replacement Considerations

The AD8392AAREZ series serves as a pin-compatible alternative utilizing the 28-lead TSSOP_EP package. Designers must account for differences in thermal resistance and physical footprint when substituting between the LFCSP and TSSOP_EP options. Verify that the replacement package meets the same electrical specifications and operating temperature ranges.

FAQ

How is the power consumption managed in the AD8392A?

The device includes four bias modes controlled by two digital logic pins per channel pair. These allow selection among three active power levels or a complete shutdown state to minimize quiescent current.

What is the function of the VCOM pins on the AACP package?

The VCOM pins provide on-chip common-mode voltage generation, eliminating the need for external components to set the common-mode operating point in typical ADSL/ADSL2+ application circuits.

Is the AD8392A suitable for driving heavy loads?

Yes, it provides a linear output current of 500 mA and can deliver up to 20.4 dBm of power to the line, compensating for hybrid insertion losses and back termination resistors.