GENERAL DESCRIPTION
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.

FEATURES
General
• Low power consumption
• 3.0 V power supply
• 256, 384 and 512fs 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
• 1fs 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 fs
• 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.