描述 Description

Overview
The UDA1341TS is a single-chip stereo Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) with signal processing features employing bitstream conversion techniques. Its fully integrated analog front end, including Programmable Gain Amplifier (PGA) and a digital Automatic Gain Control (AGC). Digital Sound Processing (DSP) featuring makes the device an excellent choice for primary home stereo MiniDisc applications, but by virtue of its low power and low voltage characteristics it is also suitable for portable applications such as MD/CD boomboxes, notebook PCs and digital video cameras.

The UDA1341TS is similar to the UDA1340M and the UDA1344TS but adds features such as digital mixing of two input signals and one channel with a PGA and a digital AGC.

The UDA1341TS supports the I2S-bus data format with word lengths of up to 20 bits, the MSB-justified data format with word lengths of up to 20 bits, the LSB-justified serial data format with word lengths of 16, 18 and 20 bits and three combinations of MSB data output combined with LSB 16, 18 and 20 bits data input. The UDA1341TS has DSP features in playback mode like de-emphasis, volume, bass boost, treble and soft mute, which can be controlled via the L3-interface with a microcontroller.

特性 Features

General



Low power consumption

3.0 V power supply

256fs , 384fs or 512fs system clock frequencies (fsys )

Small package size (SSOP28)

Partially pin compatible with UDA1340M and UDA1344TS

Fully integrated analog front end including digital AGC

ADC plus integrated high-pass filter to cancel DC offset

ADC supports 2 V (RMS value) input signals

Overload detector for easy record level control

Separate power control for ADC and DAC

No analog post filter required for DAC

Easy application

Functions controllable via L3-interface.



Multiple format data interface



I2S-bus, MSB-justified and LSB-justified format compatible

Three combinational data formats with MSB data output and LSB 16, 18 or 20 bits data input

1fs input and output format data rate.



DAC digital sound processing



Digital dB-linear volume control (low microcontroller load)

Digital tone control, bass boost and treble

Digital de-emphasis for 32, 44.1 or 48 kHz audio sample frequencies (fs)

Soft mute.



Advanced audio configuration



DAC and ADC polarity control

Two channel stereo single-ended input configuration

Microphone input with on-board PGA

Optional differential input configuration for enhanced ADC sound quality

Stereo line output (under microcontroller volume control)

Digital peak level detection

High linearity, dynamic range and low distortion.