This document introduces the features and characteristics of the PCM3793/PCM3794 chip. It is a low-power stereo audio codec with microphone bias, headphone and digital speaker amplifier. The chip supports 2 or 3 wire serial control, supports multiple analog inputs, digital inputs and outputs, and also supports speaker power amplifier and audio adjustment functions.
The PCM3793 and PCM3794 are 16‑bit, low‑power stereo audio CODECs designed for portable digital audio applications. They integrate microphone bias, headphone and digital speaker amplifiers, and support I²C or SPI serial control.
The document provides absolute maximum ratings, recommended operating conditions, detailed electrical characteristics, pin assignments, terminal functions, functional block diagrams, and typical performance curves, along with ordering information and legal notices.
| Supply voltage range (VDD, VIO, VCC, VPA) | 0.3 V to 4 V |
|---|---|
| Sampling frequency range | 5 kHz to 50 kHz |
| Dynamic range (DAC) | 93 dB |
| Package | 5 mm × 5 mm QFN |
All supply rails (VDD, VIO, VCC, VPA) must be between 0.3 V and 4 V.
The CODEC supports sampling frequencies from 5 kHz up to 50 kHz.
The DAC provides a dynamic range of 93 dB.