104 dB, Stereo Codec with Mux and S/PDIF Transmitter
The CS4265 is a stereo audio codec featuring an integrated five-chip design and S/PDIF output to provide premium audio performance. An analog front-end provides a 2:1 input mux and a programmable gain amplifier (PGA) capable of ±12 dB of analog gain in 0.5 dB step sizes with zero-crossing and click-free transitions to maintain superior audio quality. One pair of inputs has a dedicated microphone pre-amplifier in its path to provide 32 dB of gain, and a low noise microphone bias supply is also available. The stereo analog-to-digital (A/D) and digital-to-analog (D/A) conversion is based on multibit Delta Sigma architecture. A synchronous S/PDIF (IEC60958-3) digital audio transmitter is integrated to provide additional design flexibility and to lower system cost.
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Technology
Features
- Complete stereo codec
- Integrated 192 kHz S/PDIF transmitter
- 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
- 2:1 input mux
- IEC60958-3 transmitter
- 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
- High-pass filter with defeat
- Package: 32-pin QFN, lead-free assembly
Parametric Specifications
| Channels In | 2 |
| 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 | 32 QFN |
