Overview
The AD1939YSTZRL, 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 is available in a 64-lead LQFP package, making it suitable for a variety of audio systems.
Key Specifications
| Parameter | Min | Max | Unit | Comments |
|---|---|---|---|---|
| ADC/DAC Dynamic Range and SNR | 107 dB (ADC) | 112 dB (DAC) | dB | |
| THD + N | -94 dB | dB | ||
| Master Clock Frequency (PLL mode) | 6.9 MHz | 13.8 MHz | MHz | 256 fS reference |
| Master Clock Frequency (Direct 512 fS mode) | 27.6 MHz | MHz | ||
| Supply Voltage | 3.3 V ± 10% | V | Digital and Analog Supplies | |
| Operating Temperature | -40°C | +105°C | °C | |
| Package Type | 64-Lead LQFP | 10mm x 10mm |
Key Features
- Differential ADC inputs and DAC outputs using multibit sigma-delta (Σ-Δ) architecture
- SPI port for microcontroller control of volume and other parameters
- Low EMI design with on-board PLL to derive master clock from LR clock or external crystal
- Support for right-justified, left-justified, I2S, and TDM modes
- Master and slave modes up to 16-channel input/output
- Software-controllable clickless mute and power-down
- Log volume control with autoramp function
- Tolerance for 5 V logic inputs
Applications
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
Q & A
- What is the AD1939YSTZRL?
The AD1939YSTZRL is a high-performance, single-chip codec produced by Analog Devices Inc., featuring four ADCs and eight DACs with differential inputs and outputs.
- What is the supply voltage for the AD1939YSTZRL?
The AD1939YSTZRL operates from a single 3.3 V supply.
- What is the package type of the AD1939YSTZRL?
The AD1939YSTZRL is available in a 64-lead LQFP package.
- What are the key applications of the AD1939YSTZRL?
The key applications include automotive audio systems, home theater systems, set-top boxes, and digital audio effects processors.
- How does the AD1939YSTZRL minimize EMI?
The AD1939YSTZRL minimizes EMI through its low EMI design, on-board PLL, and the use of continuous time architectures for the DACs and ADCs.
- What is the dynamic range and SNR of the AD1939YSTZRL?
The ADCs have a dynamic range and SNR of 107 dB, while the DACs have a dynamic range and SNR of 112 dB.
- Does the AD1939YSTZRL support SPI control?
Yes, the AD1939YSTZRL includes an SPI port for microcontroller control of various parameters.
- What are the operating temperature ranges for the AD1939YSTZRL?
The operating temperature range is from -40°C to +105°C.
- What are the master clock frequency options for the AD1939YSTZRL?
The master clock frequency can be derived from the PLL mode (6.9 MHz to 13.8 MHz) or direct 512 fS mode (27.6 MHz).
- Does the AD1939YSTZRL support clickless mute and power-down?
Yes, the AD1939YSTZRL supports software-controllable clickless mute and power-down.
