AD1854JRSZ

Overview

The AD1854JRSZ is a stereo audio DAC in a 28-lead SSOP package, operating from a single 5 V supply over the 0°C to 70°C temperature range. It supports 16-, 18-, 20-, and 24-bit data with sample rates up to 96 kHz. The device features a multibit sigma-delta modulator for reduced idle tones and noise floor. Analog performance includes 105 dB dynamic range (no filter) and 108 dB A-weighted at 48 kHz. It accepts serial data via left-justified, right-justified, or I2S-compatible interfaces. On-chip features include a 1024-step volume attenuator, clickless mute, digital de-emphasis, and zero-input flag outputs.

Feature Summary

• Multibit Sigma-Delta Modulator with Perfect Differential Linearity Restoration
• Supports 24-bit resolution and 96 kHz sample rate
• On-chip Volume Control with 1024 steps and auto ramp
• Flexible Serial Data Port: Left-Justified, Right-Justified, and I2S-Compatible

Applications

• DVD and CD Players
• Set-Top Boxes
• Home Theater Systems
• Automotive Audio Systems
• Digital Mixing Consoles

Procurement Notes

The AD1854JRSZ is marked as obsolete in official documentation. Verification of current availability requires checking distributor status, as standard manufacturing may have ceased. Ensure compatibility with existing designs before procurement due to end-of-life status.

Selection Notes

Select the AD1854JRSZ for applications requiring a single-supply 5V stereo DAC with high dynamic range. It is suitable for systems needing integrated volume control and digital de-emphasis. Verify that the host processor supports the required serial data formats (I2S, Left/Right Justified) and clock frequencies (256x or 384x FS).

Part Context

The AD1854 belongs to the AD1854 family of stereo audio DACs. The JRS suffix indicates the commercial temperature range (0°C to 70°C) and the RS-28 28-lead SSOP plastic package. Other variants include the KRS for higher performance specifications and the JRSRL for reel packaging.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is obsolete, alternative solutions require evaluating modern audio DACs with similar interface requirements and performance specifications.