AD1886AJST

Overview

The AD1886AJST is an AC'97 2.2 compliant stereo codec featuring a 48-terminal LQFP package. It integrates 16-bit stereo full-duplex A/D and D/A converters with multibit architecture for improved signal-to-noise ratio exceeding 90 dB. The device supports variable sample rates from 7040 Hz to 48 kHz with 1 Hz resolution and includes a stereo headphone amplifier. Power management features split supplies of 3.3 V digital and 5.0 V analog, with power dissipation at 306 mW under standard conditions.

Feature Summary

• AC'97 2.2 compliance with integrated SPDIF output supporting multiple symbol rates
• Multibit DAC architecture providing high dynamic range and low distortion
• Built-in stereo headphone amplifier with jack sense functionality for automatic switching
• Variable sample rate generation allowing flexible audio clock configurations

Applications

• Desktop PC audio subsystems requiring AC'97 interface
• Speakerphone and telephony integration via mono output
• Digital audio mixer applications with software-controlled routing
• Mobile low-power mixer modes for portable computing devices

Procurement Notes

Verify the specific ordering suffix JST corresponds to the ST-48 thin quad flatpack package option. Confirm the operating temperature range matches the 0 °C to 70 °C specification. Ensure compatibility with the required 3.3 V digital and 5.0 V analog supply voltages before finalizing procurement orders.

Selection Notes

Select this component when an AC'97 2.2 interface is mandatory for system compatibility. The integrated headphone amplifier eliminates external components for direct drive applications. Verify that the 16-bit resolution meets the dynamic range requirements for the target audio quality standards.

Part Context

This model belongs to the Analog Devices AC'97 SoundMAX codec family. It provides a complete audio solution for motherboard implementations. The device replaces discrete audio processing chips by integrating mixing, conversion, and amplification functions into a single integrated circuit.

Replacement Considerations

The datasheet notes backward compatibility with AD1819 and AD1819A through aliased registers. Verify register mapping differences if substituting these older models. No other direct replacement part numbers are explicitly confirmed in the provided documentation.