GENERAL DESCRIPTION

The CS42L51 is a highly integrated, 24-bit, 96 kHz, low power stereo CODEC. Based on multi-bit, delta-sigma modulation, it allows infinite sample rate adjustment between 4 kHz and 96 kHz. Both the ADC and DAC offer many features suitable for low power, portable system applications.

SYSTEM FEATURES

♦ 24-bit Converters

♦ 4 kHz to 96 kHz Sample Rate

♦ Multi-bit Delta Sigma Architecture

♦ Low Power Operation

– Stereo Playback: 12.93 mW @ 1.8 V

– Stereo Record and Playback: 20.18 mW @ 1.8 V

♦ Variable Power Supplies

– 1.8 V to 2.5 V Digital & Analog

– 1.8 V to 3.3 V Interface Logic

♦ Power Down Management

– ADC, DAC, CODEC, MIC Pre-Amplifier, PGA

♦ Software Mode (I²C® & SPI™ Control)

♦ Hardware Mode (Stand-Alone Control)

♦ Digital Routing/Mixes:

– Analog Out = ADC + Digital In

– Digital Out = ADC + Digital In

– Internal Digital Loopback

– Mono Mixes

♦ Flexible Clocking Options

– Master or Slave Operation

– High-Impedance Digital Output Option (for easy MUXing between CODEC and Other Data Sources)

– Quarter-Speed Mode - (i.e. Allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)

APPLICATIONS

♦ HDD & Flash-Based Portable Audio Players

♦ MD Players/Recorders

♦ PDAs

♦ Personal Media Players

♦ Portable Game Consoles

♦ Digital Voice Recorders

♦ Digital Camcorders

♦ Digital Cameras

♦ Smart Phones