AD1887JSTZ-REEL

Overview

The AD1887JSTZ-REEL is a 16-bit stereo full-duplex AC'97 codec manufactured by Analog Devices Inc. It features split power supplies with a 3.3 V digital domain and a 5 V analog domain, operating within a temperature range of 0 °C to 70 °C. The device integrates two analog line-level stereo inputs (LINE-IN and CD), a mono microphone input with a programmable preamp, and a high-quality CD input with ground sense. It includes an integrated stereo headphone amplifier and supports variable sample rates from 7040 Hz to 48 kHz with 1 Hz resolution. The component utilizes a multibit /H9018-/H9004 converter architecture to achieve a signal-to-noise ratio greater than 90 dB.

Feature Summary

• Supports AC'97 2.2 compliance with variable sample rate audio capabilities ranging from 7040 Hz to 48 kHz.
• Integrates a stereo headphone amplifier with extended 6-bit volume control and software-enabled VREFOUT output for microphones and external power amplifiers.
• Features a mobile low-power mixer mode and a digital audio mixer mode for flexible signal routing and processing.

Applications

• AC'97 compliant motherboard audio subsystems
• Desktop and laptop computer sound cards
• Multimedia peripheral devices requiring full-duplex audio

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and environmental rating. Confirm that the REEL designation matches the required tape and reel specifications for automated assembly processes. Ensure compatibility with the target system's AC'97 bus interface requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring a fully integrated AC'97 codec with built-in headphone amplification. Consider the split power supply requirement when designing the PCB layout to ensure proper isolation between digital and analog domains. Verify that the 48-terminal TQFP package fits the available footprint constraints on the target board.

Part Context

This part belongs to the AD1887 series of audio codecs from Analog Devices. It is designed primarily for PC audio applications, providing both analog-to-digital and digital-to-analog conversion within a single package. The JSTZ suffix indicates the commercial temperature range and the specific thin-quad flatpack packaging option used for this variant.

Replacement Considerations

Check for backward compatibility with the AD1819 and AD1819A models, as indicated by aliased register addresses in the datasheet. Verify pinout and register map compatibility if substituting with other AC'97 codecs from the same manufacturer family.