The AD1939 is a high performance, single-chip codec that provides four analog-to-digital converters and eight digital-to-analog converters, and can be used with a PLL or direct master clock.
The AD1939 is a high‑performance, single‑chip audio codec offering four analog‑to‑digital converters with differential inputs and eight digital‑to‑analog converters with differential outputs. It operates from a single 3.3 V supply and includes an SPI port for flexible control of volume, mute, and other parameters.
Key features include low‑EMI design, PLL‑generated master clock, 112 dB DAC/107 dB ADC dynamic range, log‑volume control with autoramp, and automotive‑grade qualification. Typical applications are automotive audio systems, home‑theater equipment, set‑top boxes, and digital audio effects processors.
| ADC Resolution | 24 Bits |
|---|---|
| Dynamic Range (ADC, No Filter) | 96‑102 dB |
| Volume Control Range | 95 dB |
| Supply Voltages (AVDD, DVDD) | 3.3 V |
| High Level Input Voltage | 2.0 V |
| Power Consumption (All Supplies) | 429 mW |
| Operating Temperature Range (Case) | -40°C to +125°C |
| Automotive Qualification | Qualified for automotive applications |
The AD1939 operates from 3.3 V supplies for both AVDD and DVDD.
The codec provides a volume control range of 95 dB.
Yes, the AD1939 is qualified for automotive applications and automotive‑grade models are available.
It is guaranteed to operate from –40 °C to +125 °C case temperature.