The UDA1331H is a Universal Serial Bus (USB) audio playback peripheral (APP) with adaptive (5 to 55 kHz) 20-bit digital-to-analog conversion and filtering. It supports USB-compliant audio and Human Interface Device (HID), with full-speed serial data transmission and support for multiple audio data formats. The device features high linearity, wide dynamic range, superior signal-to-noise ratio, low total harmonic distortion, and low power consumption.
The Philips UDA1331H is an adaptive asynchronous sink USB audio device featuring a continuous sampling frequency range from 5 to 55 kHz. It integrates a USB interface, an embedded microcontroller, and an Asynchronous Digital-to-Analog Converter (ADAC) for stereo audio playback.
| Supply voltage | 3.0 to 3.6 V |
|---|---|
| Total supply current | = 50 mA |
| Supply current in power-save mode | -18 mA |
| Total harmonic distortion-plus-noise ratio | -90 dB typical |
| Signal-to-noise ratio | 95 dBA typical |
| Full-scale output voltage (RMS) | -0.66 V |
| Audio sample input frequency range | 5 to 55 kHz |
| Operating ambient temperature | 0 to 70 °C |
The device operates with a supply voltage between 3.0 V and 3.6 V.
The typical signal-to-noise ratio at bipolar A-weighted zero code is 95 dBA.
It is designed for USB monitors, speakers, headsets, and telephone/answering machines.