Six/Two Channel, 104 dB Codec with Mux and PGA

The CS4245 is a highly integrated stereo audio codec an integrated analog input selector on the front end to accommodate up to six stereo audio sources. Also included is a programmable gain amplifier (PGA) capable of ±12 dB of analog gain in 0.5 dB step sizes with zero-crossing, click-free transitions to maintain sonic quality. One pair of inputs has a dedicated microphone pre-amplifier in its path that provides 32 dB of gain, and a low noise microphone bias supply is also available. The D/A converter includes digital attenuation, single ended inputs and outputs, and Popguard® technology for control of clicks and pops.

Technology

Mono/Stereo Codecs

Features

  • Complete stereo codec
  • 24-bit conversion
  • System sampling rates up to 192 kHz
  • Advanced multibit Delta Sigma architecture
  • 104 dB dynamic range
  • -95 dB ADC THD+N
  • -90 dB DAC THD+N
  • 6:1 input mux
    • Up to six stereo input sources, pass-through mode
  • Programmable gain amplifier: ±12 dB gain, 0.5 dB step sizes with zero crossing
  • Microphone pre-amp with 32 dB gain and low-noise bias supply
  • Digital volume control
  • Popguard technology for control of clicks and pops
  • Single-ended inputs and outputs
  • 3.3 V or 5.0 V power supply
  • Support for direct interface to logic levels from 1.8 V to 5 V
  • Overflow detection
  • Support for asynchronous A/D and D/A converter sample rates
  • Pin-compatible with the CS5345
  • Package: 48-pin LQFP, lead-free assembly

Parametric Specifications

Channels In 6
Channels Out 2
DAC THD+N (dB) -90
ADC THD+N (dB) -95
Analog Power Supply (V) 3.3-5
Supply Current (µA) 3.3-5
Logic Power Supply (V) 1.8-5
Package 48 LQFP

Technical Documents

CS4245 Product Data Sheet

Aug 14, 2012, DS656F3 : 1876 Kb

CS4245/5345 Product Bulletin

Jun 1, 2004, 0138-0604-PB-LP : 403 Kb

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