AD1887JST-REEL

Overview

The AD1887JST-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 an ambient temperature range of 0 °C to 70 °C. The device supports variable sample rates from 7040 Hz to 48 kHz with 1 Hz resolution and provides greater than 90 dB dynamic range for both analog-to-digital and digital-to-analog conversion paths. It includes integrated stereo headphone amplifiers, programmable gain amplifiers for microphone inputs, and multiple analog line-level stereo inputs such as LINE-IN and CD. The component utilizes a multibit /H9018-/H9004 converter architecture to achieve improved signal-to-noise ratios exceeding 90 dB.

Feature Summary

• Supports variable sample rate audio functionality compliant with AC'97 2.2 specifications
• Integrates stereo headphone amplifiers with extended volume control capabilities
• Features software-enabled voltage reference output suitable for microphones and external power amplifiers
• Includes mobile low-power mixer mode to optimize energy consumption during operation

Applications

• AC'97 compliant audio systems requiring full-duplex voice and music processing
• Desktop and laptop computer motherboards utilizing SoundMAX technology
• Multimedia peripherals requiring high-quality stereo input and output channels

Procurement Notes

Verify the specific ordering suffix JST against official documentation to confirm the package type and temperature range. Ensure that the REEL designation aligns with your manufacturing requirements, as standard listings may indicate tube packaging for this model. Cross-reference the vendor ID registers to validate authenticity before integration into production designs.

Selection Notes

Select this component when designing systems that require strict adherence to AC'97 2.2 standards with split power supply architectures. Evaluate the 3.3 V digital and 5 V analog power requirements to ensure compatibility with existing system rails. Consider the integrated headphone amplifier and programmable gain stages to simplify external circuitry design for microphone and line-level inputs.

Part Context

The AD1887 belongs to the AC'97 codec family developed by Analog Devices, often associated with the SoundMAX brand. It serves as a primary audio interface solution for personal computers and embedded multimedia devices. The device integrates both analog front-end processing and digital serial interface logic to facilitate direct connection to host processors via the AC-Link protocol.

Replacement Considerations

Consult official Analog Devices documentation for backward-compatible alternatives or updated generations within the AC'97 codec portfolio. Verify pinout and register compatibility if substituting with other models in the series.