GENERAL DESCRIPTION

The TDA1314T is a quadruple very low noise high dynamic range DAC which is intended for use in motor cars and is controlled by the car radio DSP. Each channel incorporates an 8th-order IIR up-sampling filter from 1ASF to 4ASF followed by a 1st-order noise shaper and DAC. The DAC currents are converted to audio voltage signals using operational amplifiers (one per channel).

FEATURES

• High dynamic range to enable digital DSP (Digital Signal Processor) volume control

• 18 bits data input format for each of the four channels

• Four times bit-serial oversampling filter

• 1st-order 4fas (audio sampling frequency) noise shaper

• Four very low noise DACs

• Only 1st-order analog post filtering required

• Smooth power-on of the DAC output currents

• Because of the automatic digital PLL divider range

setting the master clock is selectable in a wide 4fas

integer range

• Insensitive to jitter on the I2S-bus signals with respect to

the DAC total harmonic distortion deterioration.