PCM3501

® PCM 350 1 PCM3501 Low Voltage, Low Power, 16-Bit, Mono VOICE/MODEM CODEC TM FEATURES q 16-BIT DELTA-SIGMA DAC AND ADC q DIFFERENTIAL INPUT AND OUTPUT q DESIGNED FOR MODEM ANALOG FRONT END: Supports up to 56kbps Operation q ANALOG PERFORMANCE: Sampling Frequency: 7.2kHz to 26kHz Dynamic Range: 88dB (typ) at fS = 8kHz, fIN = 1kHz q SYSTEM CLOCK: 512fS q MASTER OR SLAVE OPERATION q ON-CHIP CRYSTAL OSCILLATOR CIRCUIT q ADC-TO-DAC LOOP-BACK MODE q TIME SLOT MODE SUPPORTS UP TO FOUR CODECs ON A SINGLE SERIAL INTERFACE q POWER-DOWN MODE: 60µA (typ) q SINGLE +2.7V TO +3.6V POWER SUPPLY q SMALL PACKAGE: 24-Lead SSOP APPLICATIONS q SOFTWARE MODEMS FOR: Personal Digital Assistant Notebook and Hand-Held PCs Set-Top Box Digital Television Embedded Systems q PORTABLE VOICE RECORDER/PLAYER q SPEECH RECOGNITION/SYNTHESIS q TELECONFERENCING PRODUCTS DESCRIPTION The PCM3501 is a low cost, 16-bit CODEC designed for modem Analog Front End (AFE) and speech processing applications. The PCM3500’s low power operation from +2.7V to +3.6V power supplies, along with an integrated power-down mode, make it ideal for portable applications. The PCM3501 integrates all of the functions needed for a modem or voice CODEC, including delta-sigma digital-to-analog and analog-to-digital converters, input anti-aliasing filter, digital high-pass filter for DC blocking, and an output low-pass filter. The synchronous serial interface provides for a simple, or glue-free interface to popular DSP and RISC process...