The AD1939YSTZ is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with differential input, and eight digital-to-analog converters (DACs) with differential output using the Analog Devices, Inc. patented multibit sigma-delta (Σ-Δ) architecture. An SPI port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1939YSTZ operates from 3.3 V digital and analog supplies. The AD1939YSTZ is available in a 64-lead (differential output) LQFP package.
The AD1939YSTZ is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board PLL to derive the master clock from the LR clock or from an external crystal, the AD1939YSTZ eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The DACs and ADCs are designed using the latest Analog Devices continuous time architectures to further minimize EMI. By using 3.3 V supplies, power consumption is minimized, further reducing emissions.
Feature
- PLL generated or direct master clock
- Low EMI design
- 112 dB DAC/107 dB ADC dynamic range and SNR
- −94 dB THD + N
- Single 3.3 V supply
- Tolerance for 5 V logic inputs
- Supports 24-bits and 8 kHz to 192 kHz sample rates
- Differential ADC input
- Differential DAC output
- Log volume control with autoramp function
- SPI controllable for flexibility
- For additional features please see the data sheet
Applications
- Automotive audio systems
- Home Theater Systems
- Set-top boxes
- Digital audio effects processors
(Picture: Pinout)
