PCM1740

PCM1740 PCM1740 SBAS128B – JANUARY 2000 – REVISED MAY 2007 TM Stereo Audio DIGITAL-TO-ANALOG CONVERTER with VCXO and PLL FEATURES APPLICATIONS q COMPLETE DELTA-SIGMA STEREO DAC q SET-TOP BOXES q VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR: 27MHz ±150ppm Output with 0V to 3V Input q DIGITAL BROADCAST RECEIVERS q PROGRAMMABLE PLL 256fS or 384fS Audio System Clock Output q DYNAMIC PERFORMANCE: Dynamic Range: 94dB SNR: 94dB THD+N: –89dB q SAMPLING FREQUENCIES: 16kHz, 22.05kHz, 24kHz 32kHz, 44.1kHz, 48kHz 64kHz, 88.2kHz, 96kHz q SERIAL AUDIO INTERFACE: Standard or I2S™ Data Formats 16-, 20-, or 24-Bit Data DESCRIPTION The PCM1740 is a complete stereo audio digital-toanalog converter with on-chip PLL and VCXO. The PCM1740 is designed specifically for set-top box applications requiring high-quality audio playback, a precision tuned 27MHz master clock source, and support for multiple audio-sampling frequencies. The stereo digital-to-analog converter (DAC) uses multibit, delta-sigma architecture, which includes an 8x interpolation filter, 3rd-order noise shaping, 5-level amplitude quantization, and an analog low-pass filter. The PCM1740 includes a number of user-programmable functions, which are accessed via a standard I2C-Bus interface. q I2C-BUS™ INTERFACE FOR CONTROL REGISTERS: Slave Receiver Operation 7-Bit Addressing Standard Transfer Rate (up to 100kbps) q PROGRAMMABLE CONTROLS: Digital Attenuation (256 steps) Soft Mute Infinite Zero Detect Mute De-Emphasis (32kHz, 44.1kHz...