AD1939YSTZRL

Overview

The AD1939YSTZRL is a high-performance, single-chip audio codec manufactured by Analog Devices Inc. It integrates four analog-to-digital converters (ADCs) with differential inputs and eight digital-to-analog converters (DACs) with differential outputs using a multibit sigma-delta architecture. The device supports 24-bit resolution and sample rates from 8 kHz to 192 kHz. It operates on a single 3.3 V supply for both analog and digital sections, while requiring a 5 V supply for the internal regulator. Key specifications include a dynamic range of up to 110 dB for DACs and 105 dB for ADCs, with a signal-to-noise ratio of 94 dB. The component utilizes an SPI control port and features a built-in PLL for clock generation.

Feature Summary

• Integrates four differential-input ADCs and eight differential-output DACs within a single package.
• Features an on-chip phase-locked loop (PLL) to generate master clocks from LRCLK or external crystals.
• Includes software-controllable clickless mute, power-down modes, and log volume control with autoramp.
• Supports multiple serial data formats including right-justified, left-justified, I2S, and TDM.

Applications

• Automotive audio systems
• Home Theater Systems
• Set-top boxes
• Digital audio effects processors

Procurement Notes

Verify the specific ordering suffix 'YSTZRL' against the manufacturer's current datasheet to confirm package type and tape-and-reel configuration. Check for automotive qualification status if required for the application. Confirm availability and lifecycle status directly with Analog Devices or authorized distributors, as distribution channels may vary.

Selection Notes

Select this component when a high channel count (4 ADC/8 DAC) with differential outputs is required in a compact form factor. Ensure the system design accommodates the 64-lead LQFP package dimensions. Verify that the host processor supports the SPI interface for register configuration and the required serial audio protocols. Consider the thermal resistance characteristics for the PCB layout.

Part Context

The AD1939YSTZRL belongs to the AD193x family of audio codecs from Analog Devices. It is distinguished by its differential DAC outputs and 64-lead LQFP packaging, contrasting with variants like the AD1938 which offers single-ended outputs in a smaller 48-lead package. This part is designed for applications demanding low EMI and high channel counts without external multiplexing.

Replacement Considerations

The AD1939WBSTZ-RL is listed as a direct substitute. Verify pin compatibility and electrical specifications before substitution. Other family members like the AD1938 offer different output configurations and package sizes.