Overview
The AD1939YSTZ, produced by Analog Devices Inc., is a high-performance, single-chip codec designed for advanced audio applications. This integrated circuit features four analog-to-digital converters (ADCs) with differential inputs and eight digital-to-analog converters (DACs) with differential outputs. The AD1939 employs Analog Devices' patented multibit sigma-delta (Σ-Δ) architecture, ensuring high-quality audio conversion. The device is equipped with an SPI port, enabling microcontroller control over various parameters such as volume and mute functions. It operates on 3.3 V digital and analog supplies, minimizing power consumption and reducing electromagnetic interference (EMI).
Key Specifications
| Parameter | Description |
|---|---|
| ADCs | Four analog-to-digital converters with differential input |
| DACs | Eight digital-to-analog converters with differential output |
| Architecture | Patented multibit sigma-delta (Σ-Δ) |
| Supply Voltage | 3.3 V digital and analog supplies |
| Package | 64-lead LQFP |
| Clock Management | On-board PLL, master clock derived from LR clock or external crystal |
| Interface | SPI controllable, right-justified, left-justified, I2S, and TDM modes |
| Power Consumption | Minimized to reduce EMI |
Key Features
- Differential DAC output and log volume control with autoramp function
- Software-controllable clickless mute and power-down
- Master and slave modes up to 16-channel input/output
- Low EMI design through on-board PLL and continuous time architectures
- SPI port for microcontroller control
- Qualified for automotive applications
Applications
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
Q & A
- What is the AD1939YSTZ?
The AD1939YSTZ is a high-performance, single-chip codec produced by Analog Devices Inc., featuring four ADCs and eight DACs.
- What architecture does the AD1939YSTZ use?
The AD1939YSTZ uses Analog Devices' patented multibit sigma-delta (Σ-Δ) architecture.
- What is the supply voltage for the AD1939YSTZ?
The AD1939YSTZ operates on 3.3 V digital and analog supplies.
- What package type is the AD1939YSTZ available in?
The AD1939YSTZ is available in a 64-lead LQFP package.
- How does the AD1939YSTZ manage clock signals?
The AD1939YSTZ uses an on-board PLL to derive the master clock from the LR clock or an external crystal.
- What interfaces does the AD1939YSTZ support?
The AD1939YSTZ supports SPI, right-justified, left-justified, I2S, and TDM modes.
- Is the AD1939YSTZ designed to minimize EMI?
Yes, the AD1939YSTZ is designed with low EMI in mind, using continuous time architectures and minimized power consumption.
- What are some common applications of the AD1939YSTZ?
Common applications include automotive audio systems, home theater systems, set-top boxes, and digital audio effects processors.
- Can the AD1939YSTZ be controlled by a microcontroller?
Yes, the AD1939YSTZ includes an SPI port for microcontroller control over various parameters.
- Is the AD1939YSTZ qualified for automotive use?
Yes, the AD1939YSTZ is qualified for automotive applications.
