UDA1340

General
· Low power consumption
· 3.0 V power supply
· 256, 384 and 512f_s system clock
· Small package size (SSOP28)
· ADC plus integrated high pass filter to cancel DC offset
· Overload detector for easy record level control
· Separate power control for ADC and DAC
· Integrated digital filter plus DAC
· No analog post filter required for DAC
· Easy application
· Functions controllable by microcontroller interface.
Multiple format input interface
· I²S-bus, MSB-justified and LSB-justified format compatible
· 1f_s input and output format data rate.
DAC digital sound processing
· Digital volume control
· Digital tone control, bass boost and treble
· dB-linear volume and tone control (low microcontroller load)
· Digital de-emphasis for 32, 44.1 and 48 kHz f_s
· Soft mute.
Advanced audio configuration
· Stereo single-ended input configuration
· Stereo line output (under microcontroller volume control)
· Power-down click prevention circuitry
· High linearity, dynamic range, low distortion.

The UDA1340 is a single-chip stereo Analog-to-Digital Converter (ADC) and Digital-to-Analog Converter (DAC) 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 UDA1340 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 and the LSB justified serial data format with word lengths of 16, 18 and 20 bits.

The UDA1340 has special sound processing features in playback mode, de-emphasis, volume, bass boost, treble, and soft mute, which can be controlled via the microcontroller interface.