Overview
The AD1939WBSTZ-RL, produced by Analog Devices Inc., is a high-performance, single-chip codec designed for advanced audio applications. This device integrates four analog-to-digital converters (ADCs) with differential inputs and eight digital-to-analog converters (DACs) with differential outputs, utilizing Analog Devices' patented multibit sigma-delta (Σ-Δ) architecture. The AD1939 operates from a single 3.3 V supply and features a built-in phase-locked loop (PLL) that can derive the master clock from the LR clock or an external crystal, eliminating the need for a separate high-frequency master clock. The device is packaged in a 64-lead LQFP package and is designed with low EMI considerations in mind, making it suitable for a variety of audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of ADCs | 4 | |
| Number of DACs | 8 | |
| ADC Dynamic Range | 107 dB | |
| DAC Dynamic Range | 112 dB | |
| THD + N | -94 dB | |
| Supply Voltage | 3.3 V | |
| Package Type | 64-lead LQFP | |
| Operating Temperature | -40°C to +105°C | |
| Master Clock Frequency (PLL mode) | 6.9 MHz to 13.8 MHz | |
| Master Clock Frequency (Direct mode) | 27.6 MHz |
Key Features
- Differential ADC and DAC inputs and outputs
- Built-in phase-locked loop (PLL) for master clock generation
- Low EMI design using continuous time architectures
- Single 3.3 V supply for both digital and analog sections
- Tolerance for 5 V logic inputs
- SPI port for microcontroller control of volume and other parameters
- Log volume control with autoramp function and software-controllable clickless mute
- Support for right-justified, left-justified, I2S, and TDM modes
- Master and slave modes up to 16-channel input/output
Applications
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
Q & A
- What is the AD1939WBSTZ-RL?
The AD1939WBSTZ-RL is a high-performance, single-chip codec produced by Analog Devices Inc., featuring four ADCs and eight DACs.
- What is the dynamic range of the ADCs and DACs in the AD1939WBSTZ-RL?
The ADCs have a dynamic range of 107 dB, and the DACs have a dynamic range of 112 dB.
- What is the supply voltage for the AD1939WBSTZ-RL?
The device operates from a single 3.3 V supply.
- What package type is the AD1939WBSTZ-RL available in?
The device is packaged in a 64-lead LQFP package.
- What are the key features of the AD1939WBSTZ-RL's PLL?
The PLL can derive the master clock from the LR clock or an external crystal, eliminating the need for a separate high-frequency master clock.
- What communication interface does the AD1939WBSTZ-RL use for microcontroller control?
The device uses an SPI port for microcontroller control.
- What are some of the applications of the AD1939WBSTZ-RL?
The device is suitable for automotive audio systems, home theater systems, set-top boxes, and digital audio effects processors.
- How does the AD1939WBSTZ-RL minimize EMI?
The device uses continuous time architectures and operates from a 3.3 V supply to minimize power consumption and EMI.
- What is the operating temperature range of the AD1939WBSTZ-RL?
The device operates from -40°C to +105°C.
- Does the AD1939WBSTZ-RL support multiple audio modes?
Yes, it supports right-justified, left-justified, I2S, and TDM modes.
