描述 Description

The UDA1334ATS is a single chip 2 channel digital-to-analog converter employing bitstream conversion techniques, including an on-board PLL. The extremely low power consumption and low voltage requirements make the device eminently suitable for use in low-voltage low-power portable digital audio equipment which incorporates a playback function.
The UDA1334ATS supports the I2S-bus data format with word lengths of up to 24 bits and the LSB-justified serial data format with word lengths of 16, 20 and 24 bits.
The UDA1334ATS has basic features such as de-emphasis (44.1 kHz sampling frequency, only supported in audio mode) and mute.

特性 Features

General
2.4 to 3.6 V power supply voltage
On-board PLL to generate the internal system clock: Operates as an asynchronous DAC, regenerating the internal clock from the WS signal (called audio mode)
Generates audio related system clock (output) based on 32, 48 or 96 kHz sampling frequency (called video mode).

Integrated digital filter plus DAC
Supports sample frequencies from 16 to 100 kHz in asynchronous DAC mode
No analog post filtering required for DAC
Easy application
SSOP16 package.
Multiple format data interface
I2S-bus and LSB-justified format compatible
1fs input data rate.
DAC digital features
Digital de-emphasis for 44.1 kHz sampling frequency
Mute function.
Advanced audio configuration
High linearity, wide dynamic range and low distortion.
PLL system clock generation
Integrated low jitter PLL for use in applications in which there is digital audio data present but the system cannot provide an audio related system clock. This mode is called audio mode.
The PLL can generate 256 X 48 kHz and 384 X 48 kHz from a 27 MHz input clock. This mode is called video mode.

應(yīng)用 Application

This audio DAC is excellently suitable for digital audio portable application, specially in applications in which an audio related system clock is not present.