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.
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Technology
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 |
| Digital Power Supply (V) | 3.3-5 |
| Logic Power Supply (V) | 1.8-5 |
| Operational Power Consumption (mW) | 198-400 |
| Package | 48 LQFP |
