AD1938YSTZRL

Overview

The AD1938YSTZRL is a high-performance, single-chip audio codec manufactured by Analog Devices Inc. It integrates four differential analog-to-digital converters (ADCs) and eight single-ended digital-to-analog converters (DACs) utilizing a patented multibit sigma-delta architecture. The device supports 24-bit resolution with sample rates ranging from 8 kHz to 192 kHz. It operates on a single 3.3 V supply for both digital and analog sections. Key performance metrics include a typical dynamic range of 108 dB for the DAC and 107 dB for the ADC, with a total harmonic distortion plus noise of -94 dB. The component is housed in a 48-lead LQFP package.

Feature Summary

• Features an integrated phase-locked loop (PLL) or direct master clock input to minimize electromagnetic interference (EMI).
• Includes software-controllable clickless mute and log volume control with autoramp function via SPI interface.
• Supports multiple data formats including right-justified, left-justified, I2S-justified, and Time-Division Multiplexed (TDM) modes.
• Designed for automotive applications with qualified reliability standards.

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 temperature range. Confirm RoHS compliance status as specifications are subject to change without notice. Ensure the source document matches the exact part number to avoid discrepancies in pinout or electrical characteristics.

Selection Notes

Select this component when a single-chip solution with four differential inputs and eight single-ended outputs is required. It is suitable for designs needing low EMI through PLL generation or direct clocking. Verify that the system requires a 3.3 V supply and SPI control compatibility. Consider the 48-lead LQFP footprint constraints during PCB layout.

Part Context

This part belongs to the AD193X family of high-performance codecs. While the AD1938 provides single-ended DAC outputs, other family members like the AD1939 offer differential DAC outputs. Both share similar ADC capabilities and sigma-delta architectures but differ in output configuration and package lead counts.

Replacement Considerations

The AD1939WBSTZ-RL is a confirmed substitute within the same product family. It offers differential DAC outputs instead of single-ended, requiring verification of output stage compatibility. Both devices utilize the same sigma-delta architecture and operate on 3.3 V supplies.