AD74111 is a low-cost, low-power mono audio codec that supports 8kHz to 48kHz sample rates and 16/20/24-bit word lengths.
The AD74111 is a 2.5 V mono audio codec that integrates a 24‑bit sigma‑delta ADC and DAC with programmable gain and volume control. It supports sample rates from 8 kHz to 48 kHz, offers on‑chip reference, and is qualified for automotive temperature ranges (‑40 °C to +105 °C). Applications include digital video camcorders, portable audio devices, voice processing, and telematics.
The device is supplied in a 16‑lead TSSOP package and features a flexible serial port for master or slave operation. Detailed specifications cover ADC/DAC resolution, dynamic range, input/output characteristics, power supply requirements, timing, and absolute maximum ratings. Pin configurations and functional block diagrams are provided for design integration.
| ADC Resolution | 24 Bits |
|---|---|
| DAC Resolution | 24 Bits |
| Input Resistance | 4 kΩ |
| Full‑Scale Input Voltage | 0.5 V rms |
| Package | 16‑Lead TSSOP |
| Maximum Sample Rate | 48 kHz |
The AD74111 can operate at sample rates up to 48 kHz.
The ADC gain can be programmed in 3 dB steps from 0 dB to 12 dB.
The DAC volume control has a step size of 0.098 % (1024 linear steps).
The mute attenuation is -100 dB.