The AD1838A is a 24-bit, 96kHz stereo audio system from Analog Devices that supports 16-, 20-, and 24-bit word lengths. It features perfect differential linearity restoration, data directed scrambling DACs, differential output, 1024 steps linear volume control, DAC and ADC software controllable clickless mutes and digital de-emphasis processing.
The AD1838A is a high‑performance single‑chip audio codec from Analog Devices. It integrates three stereo DACs and one stereo ADC, each with independent volume control and click‑less mute functions. The device operates from a 5 V analog supply and includes a separate 3.3 V‑tolerant digital interface.
Key features include 24‑bit conversion, dynamic range up to 105 dB, THD+N better than –95 dB, 1024‑step linear volume control, and a flexible serial interface that supports I²S, left‑justified, right‑justified, DSP and TDM modes. The part is offered in a 52‑lead MQFP package and is rated for industrial temperature range –40 °C to +85 °C.
| Supply Voltage (AVDD, DVDD) | 5 V |
|---|---|
| Maximum Sample Rate | 96 kHz |
| ADC Resolution | 24 Bits |
| DAC Resolution | 24 Bits |
| THD+N (typical, 48 kHz) | -95 dB |
| Volume Control Steps | 1024 linear steps |
| Package | 52‑lead MQFP |
| Operating Temperature Range | -40 °C to +85 °C |
The AD1838A operates from a 5 V analog supply (AVDD/DVDD) with a separate 3.3 V‑tolerant digital supply.
The codec supports audio sample rates up to 96 kHz.
The device contains three stereo DACs (six DAC channels) and one stereo ADC (two ADC channels).
It is available in a 52‑lead MQFP (plastic) package.