The CS4207 is a highly integrated multi-channel low power HD audio codec featuring 192kHz DACs, 96kHz ADCs, 192kHz S/PDIF transmitter and receiver, microphone preamp and bias voltage and a ground centered headphone driver. Based on multi-bit, Delta Sigma modulation, it allows infinite sample rate adjustment between 32kHz and 192kHz. The ADC input path allows control of a number of features. The microphone input path includes a selectable programmable-gain pre-amplifier stage and a low noise MIC bias voltage supply. A GA is available for line and microphone inputs and provides analog gain with soft ramp and zero cross transitions. The ADC also features an additional digital volume attenuator with soft ramp transitions.
- DAC1 (headphone/line out) - 101dB dynamic range (A-wtd), -88 dB THD+N
- Headphone amplifier - GND centered - Integrated negative voltage regulator, no DC-blocking capacitor required, 44mW power/channel into 16 ohm
- DAC2 & DAC3 (line outs) - 110 dB dynamic range (A-wtd), -89 dB THD+N, differential balanced or single-ended
- Each DAC supports 32 kHz to 192 kHz sample rates independently
- Digital volume control - +6.0 to -57.5dB in 0.5dB steps, zero cross or soft ramp transitions
- Independent support of D0 and D3 power states for each DAC
- Fast D3 to D0 transition - audio playback in less than 50ms
- ADC1 & ADC2 - 105dB dynamic range (A-wtd), -89dB THD+N
- MIC inputs - Programmable, low noise MIC bias level
- Each ADC supports 8 kHz to 96 kHz sample rates independently
- Digital interface for two dual digital mic inputs
- Independent support of D0 and D3 power states for each ADC
