PCM3500

` 16-BIT DELTA-SIGMA DAC AND ADC
` DESIGNED FOR MODEM ANALOG FRONT END:
` Supports up to 56kbps Operation
` ANALOG PERFORMANCE:
  Sampling Frequency: 7.2kHz to 26kHz
  Dynamic Range: 88dB (typ) at f_S  = 8kHz, f_IN  = 1kHz
  SYSTEM CLOCK: 512f_S
` MASTER OR SLAVE OPERATION
` ON-CHIP CRYSTAL OSCILLATOR CIRCUIT
` ADC-TO-DAC LOOP-BACK MODE
` TIME SLOT MODE SUPPORTS UP TO
` FOUR CODECs ON A SINGLE SERIAL
  INTERFACE
` POWER-DOWN MODE: 60A (typ)

· SOFTWARE MODEMS FOR:
· Personal Digital Assistant
· Notebook and Hand-Held PCs
· Set-Top Box
· Digital Television
· Embedded Systems
· PORTABLE VOICE RECORDER/PLAYER
· SPEECH RECOGNITION/SYNTHESIS
· TELECONFERENCING PRODUCTS

Supply Voltage, +V_DD , +V_CC...........................................................+6.5V
Supply Voltage Differences...............................................................±0.1V
GND Voltage Differences.................................................................. ±0.1V
Digital Input Voltage................................................ 0.3V to V_DD  + 0.3V
Input Current (any pins except supply) ........................................ ±10mA
Power Dissipation ........................................................................ 300mW
Operating Temperature Range ......................................... 25 to +85
Storage Temperature...................................................... 55 to +125
Junction Temperature ...................................................................... 150
Lead Temperature (soldering, 5s).................................................. +260
(reflow, 10s) .................................................................................. +235

The PCM3500 is a low cost, 16-bit CODEC designed for modem Analog Front End (AFE) and speech pro-cessing applications. The PCM3500's low power op-eration from +2.7V to +3.6V power supplies, along with an integrated power-down mode, make it ideal for portable applications.

The PCM3500 integrates all of the functions needed for a modem or voice CODEC, including delta-sigma POWER SUPPLY: Single +2.7V to +3.6V SMALL PACKAGE: SSOP-24