Описание
The CS42L55 is a highly integrated, 24-bit, ultra-low power stereo CODEC based on multi-bit delta-sigma modulation. Both the ADC and DAC offer many features suitable for low power portable system applications.The analog input path allows independent channel control of a variety of features. The Programmable Gain Amplifier (PGA) provides analog gain with zero cross transitions. The ADC path includes a digital volume attenuator with soft ramp transitions and a programmable ALC and noise gate monitor the input signals and adjust the volume appropriately. An analog passthrough also exists, accommodating a lower noise, lower power analog in to analog out path to the headphone and line amplifiers, bypassing the ADC and DAC.
- High Performance 24-bit Converters
- Multi-bit Delta Sigma Architecture
- Integrated High Efficient Power Management Reduces Power Consumption
- Step-Down Charge Pump Improves Efficiency
- Inverting Charge Pump Accommodates Low System Voltage by Providing Negative Rail for HP/Line Amp
- LDO Reg. Provides Low Digital Supply Voltage
- Digital Power Reduction
- Very Low Oversampling Rate for Converters
- Bursted Serial Clock Providing 24 Bits per Sample
- Power Down Management
- ADC, DAC, CODEC, PGA, DSP
- Analog & Digital Routing/Mixes
- Line/Headphone Out = Analog In (ADC Bypassed)
- Line/Headphone Out = ADC Out
- Internal Digital Loopback
- Mono Mixes
- I²C® Control Port
- I²S Digital Interface Format
