AD1939WBSTZ

Overview

The AD1939WBSTZ 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, utilizing a patented multibit sigma-delta architecture. The device supports 24-bit resolution and sample rates ranging from 8 kHz to 192 kHz. It operates on a single 3.3 V supply for both analog and digital sections, while accommodating 5 V logic inputs. Key performance metrics include a DAC dynamic range of 112 dB and an ADC dynamic range of 107 dB. The component is housed in a 64-lead LQFP package.

Feature Summary

• Features a low EMI design achieved through on-board PLL clock generation or direct master clock input, eliminating the need for separate high-frequency clocks.
• Includes software-controllable clickless mute, log volume control with autoramp function, and SPI controllable parameters for flexible system integration.
• Supports multiple serial data formats including right-justified, left-justified, I2S, and TDM modes, operating in both master and slave configurations.

Applications

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

Procurement Notes

Verify that the specific part number matches the required automotive qualification status if applicable. Confirm the package type is the 64-lead LQFP variant. Ensure the ordering suffix aligns with the manufacturer's current production guidelines. Cross-reference the datasheet revision to confirm compatibility with existing system designs.

Selection Notes

Select this component when a high channel count with differential outputs is required within a single package. Consider the internal PLL capabilities if external crystal oscillators are preferred over direct master clocks. Evaluate the power consumption specifications against system thermal constraints, particularly at higher sample rates like 192 kHz.

Part Context

The AD1939WBSTZ belongs to the AD1939 family of audio codecs. It shares core architectural features with other variants in the series but differs in packaging and specific ordering suffixes. This model represents the standard commercial grade version available in the lead-free LQFP package format.

Replacement Considerations

Direct substitute part numbers include AD1939YSTZRL and AD1939XSTZ. Verify pinout compatibility and electrical specifications before substitution. Check for any differences in automotive qualification status between the original and replacement parts.