GENERAL DESCRIPTION

The TDA1305T is a new generation of filter-DAC which features a unique combination of bitstream and continuous calibration techniques. The converter functions as a bitstream converter for low signals while large signals are generated using the dynamic continuous calibration technique, thus resulting in low power consumption, small chip size and easy application.

FEATURES

? Easy application

? 16fs Finite-duration Impulse-Response (FIR) filter incorporated

? Selectable system clock (fsys) 256fsor 384fs

? I2S-bus serial input format (at fsys= 256fs) or LSB fixed 16, 18 or 20 bits serial input mode (at fsys= 384fs)

? Slave-mode clock system

? Cascaded 4-stage digital filter incorporating 2-stage FIR filter, linear interpolator and sample-and-hold

? Smoothed transitions before and after muting (soft mute)

? Digital de-emphasis filter for three sampling rates of 32 kHz, 44.1 kHz and 48 kHz

? 12 dB attenuation via the attenuation input control

? Double speed mode

? 2nd order noise shaper

? 96 (fsys= 384fs) or 128 (fsys= 256fs) times oversampling in normal speed mode

? 48 (fsys= 384fs) or 64 (fsys= 256fs) times oversampling in double speed mode

? Bitstream continuous calibration concept

? Small outline SO28 package

? Voltage output 1.5 V (RMS) at line drive level

? Low total harmonic distortion

? No zero crossing distortion

? Inherently monotonic

? No analog post filtering required

? Superior signal-to-noise ratio

? Wide dynamic range (18-bit)

? Single rail supply (3.4 to 5.5 V).