Описание
The UDA1342TS is a single-chip 4 channel analog-to-digital converter and 2 channel digital-to-analog converter with signal processing features employing bitstream conversion techniques. The 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 recording and playback functions. The UDA1342TS supports the I²S-bus data format with word lengths of up to 24 bits, the MSB-justified 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 device also supports a combination of the MSB-justified output format and the LSB-justified input format. The UDA1342TS has special sound processing features in the playback mode such as de-emphasis, volume, mute, bass boost and treble, which can be controlled by the microcontroller via the L3-bus or I²C-bus interface.
General
- 2.7 to 3.6 V power supply
- 5 V tolerant digital inputs
- High pin compatibility with UDA1341TS
- 24 bits data path
- Selectable control via L3-bus interface, I²C-bus interface or static pin control; choice of 2 device addresses in L3-bus and I²C-bus mode
- Supports sample frequencies from 16 to 110 kHz
- Separate power control for ADC and DAC
- ADC and Programmable Gain Amplifiers (PGA) plus integrated high-pass filter to cancel DC offset
- Integrated digital filter plus DAC
- Digital silence detection
- No analog post filtering required for DAC
- Slave mode only applications
- Easy application.
Multiple format data interface
- I²S-bus, MSB-justified and LSB-justified format compatible
- 1fs to 4fs input and 1fs output format data rate.
DAC digital sound processing
- Separate digital logarithmic volume control for left and right channels in L3-bus mode or I²C-bus mode
- Digital tone control, bass boost and treble in L3-bus mode or I²C-bus mode
- Digital de-emphasis for sample frequencies of 32, 44.1, 48 and 96 kHz in L3-bus mode or I²C-bus mode
- Soft or quick mute in L3-bus mode or I²C-bus mode
- Output signal polarity control in L3-bus mode or I²C-bus mode
- Digital mixer for ADC output signal and digital serial input signal.
Advanced audio configuration
- 4 channel (2 x stereo) single-ended inputs with programmable gain amplifiers and 2 channel (1 x stereo) single-ended outputs configuration
- Output signal polarity control in L3-bus mode or I²C-bus mode
- High linearity, wide dynamic range, low distortion
- Double differential input configuration for enhanced ADC sound quality.
