
Cirrus Logic
GENERAL DESCRIPTION
The CS42448 CODEC provides six multi-bit analog-todigital and eight multi-bit digital-to-analog delta-sigma converters. The CODEC is capable of operation with either differential or single-ended inputs and outputs, in a 64-pin LQFP package.
Six fully differential, or single-ended, inputs are available on stereo ADC1, ADC2, and ADC3. When operating in Single-Ended Mode, an internal MUX before ADC3 allows selection from up to four single-ended inputs. Digital volume control is provided for each ADC channel, with selectable overflow detection.
FEATURES
✦ Six 24-bit A/D, Eight 24-bit D/A Converters
✦ ADC Dynamic Range
– 105 dB Differential
– 102 dB Single-Ended
✦ DAC Dynamic Range
– 108 dB Differential
– 105 dB Single-Ended
✦ ADC/DAC THD+N
– -98 dB Differential
– -95 dB Single-Ended
✦ Compatible with Industry-Standard Time
Division Multiplexed (TDM) Serial Interface
✦ System Sampling Rates up to 192 kHz
✦ Programmable ADC High-Pass Filter for DC
Offset Calibration
✦ Logarithmic Digital Volume Control
✦ I²C® & SPI™ Host Control Port
✦ Supports Logic Levels Between 5 V and 1.8 V
✦ Popguard® Technology