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.
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Technology
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
| DACs | 8 |
| ADCs | 6 |
| 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 |
| Digital Power Supply (V) | 3.3-5 |
| Logic Power Supply (V) | 1.8-5 |
| Operational Power Consumption (mW) | 600-850 |
| Package | 64 LQFP |
