108 dB, 192 kHz 6-in, 8-out Multi-channel Codec

The CS42448 is a highly integrated audio codec that is engineered to simplify design for home theaters and automotive audio systems. This codec allows system designers to deliver advanced multi-channel surround-sound performance for entry- and mid-level audio products. The CS42448 allows up to eight single-ended or six differential audio input sources to be incorporated and up to eight single-ended or differential output sources. This high level of integration eliminates the need for external analog-to-digital (A/D) converters to pass multiple audio channels to a DSP chip for audio processing. An auxiliary serial input is available for an additional two channels of PCM (pulse code modulation) data. The increased input capability enables audio/video (A/V) receivers that receive audio from several sources. In an automotive entertainment system, the audio input sources could include in-car navigation systems, mobile phones, CD/DVD players as well as the radio tuner. CS42448 outputs feature Cirrus Logic’s patented Popguard® technology to eliminate power-cycling clicks and pops. Popguard enhances the audio while simplifying system design and reducing the bill-of-material (BOM) costs. The CS42448 delivers advanced performance, design flexibility, a reduction in BOM costs and a competitive price-point. This IC is ideal for audio applications such as A/V receivers, DVD receivers and automotive audio systems, applications that require wide dynamic range, negligible distortion and low noise.

Features

  • Six 24-bit A/D converters and eight 24-bit D/A converters
  • System sampling rates up to 192 kHz
  • A/D converter dynamic range
    • 105 dB differential
    • 102 dB single-ended
  • D/A converter dynamic range
    • 108 dB differential
    • 105 dB single-ended
  • THD+N (A/D and D/A converters)
    • -98 dB differential
    • -95 dB single-ended
  • A/D input mux – single-ended mode
  • Cirrus Logic Popguard® technology to minimize clicks and pops
  • Programmable A/D converter high-pass filter for DC offset calibration
  • Support for logic levels between 1.8 V and 5 V
  • Package: 64-pin LQFP; lead-free assembly
  • Selectable audio interface formats
    • Left-justified, I²S, TDM
  • Consumer and automotive D-grade availability

Parametric Specifications

ADCs 6
DACs 8
DAC Dynamic Range (dB) 108
ADC Dynamic Range (dB) 105
DAC THD+N (dB) -98
ADC THD+N (dB) -98
Sample Rate (kHz) 4-192
Analog Power Supply (V) 3.3-5
Supply Current (µA) 3.3-5
Package 64 LQFP

Technical Documents

CS42448 Product Data Sheet

Nov 8, 2013, DS648F4 : 4096 Kb

CS424xx Product Bulletin

Oct 27, 2008, 0142-1008-PB : 246 Kb

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