This document describes the features and characteristics of a product named TDA1548T, which is an integrated circuit with headphone driver and DSP functions, and is a bitstream continuous calibration filter-DAC.
The TDA1548T is a dual CMOS digital-to-analogue converter (DAC) featuring bitstream continuous calibration, noise shaping, and an integrated headphone driver. It supports the 2S-bus data input mode with word lengths up to 20 bits and LSB justified serial data formats of 16, 18, or 20 bits.
The device includes high-performance sound processing functions such as digital volume control, soft mute, bass boost, treble adjustment, and de-emphasis. These analog-controlled features are managed via potentiometer inputs that convert to internal digital coefficients for precise audio tuning.
The device is rated for an operating ambient temperature range from -20 to +70 °C.
The typical full-scale output voltage is 0.64 V when the supply voltage is 3 V.
The quantization step size is approximately 22.7 mV.