Audio Codec 4ADC / 2DAC 24-Bit 28-Pin SSOP T/R

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
• 1f_s to 4f_s input and 1f_s 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.