UDA1341TS: Economy audio CODEC for MiniDisc (MD) home stereo and portable applications ARCHIVED

Overview

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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. It's 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 boom boxes, 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.

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Features

General

Low power consumption
3.0 V power supply
256fs, 384f_s or 512f_s system clock frequencies (f_sys)
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
1f_s 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 (f_s)
Soft mute

Advanced audio configuration

DAC and ADC polarity control
Two channel stereo single-ended input configuration
Microphone input with onboard 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