AD1939WBSTZ Audio Codec Interface - Equivalent & Substitute Parts

Part Overview

The AD1939WBSTZ is a 24-bit audio codec interface manufactured by Analog Devices Inc., designed for automotive-grade audio applications. This surface-mount IC operates as a serial audio interface with integrated analog-to-digital and digital-to-analog conversion capabilities. The device is currently in active production status and maintains full automotive compliance. Substitute parts are identified based on identical electrical specifications, package geometry, and operational parameters to ensure direct functional equivalence in system designs.

Substiute Parts

AD1939WBSTZ

Analog Devices Inc.In Stock: 5813AD1939WBSTZ Datasheet

Current PartRFQ

AD1939WBSTZ-RL

Analog Devices Inc.In Stock: 3075AD1939WBSTZ-RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD1939WBSTZ are identified based on strict equivalence across the following critical parameters:

• Package Geometry: 64-LQFP (10x10) surface-mount configuration
• Resolution and Conversion Channels: 24-bit resolution with 4 ADCs and 8 DACs
• Serial Data Interface: Identical serial communication protocol
• Sigma Delta Architecture: Matching analog conversion methodology
• Audio Performance Specifications: S/N ratio of 94 dB (ADCs/DACs) and dynamic range of 105 dB (ADCs) / 110 dB (DACs)
• Supply Voltage Range: 3V to 3.6V for both analog and digital supplies
• Operating Temperature Range: -40°C to 105°C automotive grade
• Compliance Standards: ROHS3 compliance, automotive qualification, and identical MSL rating

The primary distinction between the main part and substitute is the packaging format: tray versus tape & reel configuration. This difference affects only the delivery and handling method, not the electrical or mechanical functionality of the component.

Parameter Comparison

Engineering Selection Recommendations

Both the AD1939WBSTZ and AD1939WBSTZ-RL are active production components from Analog Devices Inc. with identical electrical and mechanical specifications. Selection between these parts depends solely on procurement and assembly requirements:

AD1939WBSTZ (Tray Packaging): Suitable for lower-volume production runs, manual assembly operations, or applications where component handling flexibility is prioritized. Tray packaging accommodates variable order quantities without tape & reel setup constraints.

AD1939WBSTZ-RL (Tape & Reel Packaging): Optimized for high-volume automated assembly lines where tape & reel format integrates directly with pick-and-place equipment. This packaging format reduces handling time and improves assembly throughput in production environments.

Both variants maintain full automotive-grade compliance, ROHS3 certification, and identical performance characteristics. The choice between packaging formats does not affect circuit performance, reliability, or functional compatibility within the target application.

Frequently Asked Questions (FAQ)

Q: Can AD1939WBSTZ-RL be used as a direct replacement for AD1939WBSTZ in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (tray versus tape & reel). No circuit modifications or design changes are required for substitution.

Q: Are there any performance differences between the tray and tape & reel versions?

A: No. Both versions deliver identical audio codec performance with 24-bit resolution, 4 ADCs, 8 DACs, 94 dB S/N ratio, and 105-110 dB dynamic range specifications.

Q: What is the significance of the -RL suffix in AD1939WBSTZ-RL?

A: The -RL suffix indicates tape & reel packaging format. This designation is used by Analog Devices Inc. to differentiate delivery method while maintaining identical part functionality.

Q: Are both parts suitable for automotive applications?

A: Yes. Both AD1939WBSTZ and AD1939WBSTZ-RL carry automotive-grade qualification and operate across the -40°C to 105°C temperature range required for automotive environments.

Q: What are the moisture handling requirements for these components?

A: Both parts have MSL rating of 3 (168 Hours), indicating they require standard moisture control during storage and handling. Components must be stored in controlled humidity environments and used within the specified time window after packaging removal.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since both parts are functionally identical, they can be used interchangeably within the same circuit design. However, assembly equipment compatibility should be verified based on your production line configuration (manual versus automated).