
Cirrus Logic
General Description
The CS4207 is a highly integrated multi-channel lowpower HD Audio CODEC featuring 192 kHz DACs, 96 kHz ADCs, 192 kHz S/PDIF Transmitters and Receiver, Microphone pre-amp and bias voltage, and a ground centered Headphone driver. Based on multi-bit, delta-sigma modulation, it allows infinite sample rate adjustment between 32 kHz and 192 kHz.
DIGITAL to ANALOG FEATURES
✦ DAC1 (Headphone)
– 101 dB Dynamic Range (A-wtd)
– -89 dB THD+N
✦ Headphone Amplifier - GND Centered
– Integrated Negative-voltage Regulator
– No DC-blocking Capacitor Required
– 50 mW Power/Channel into 16 Ω
✦ DAC2 & DAC3 (Line Outs)
– 110 dB Dynamic Range (A-wtd)
– -94 dB THD+N
– Differential Balanced or Single-ended
✦ Each DAC Supports 32 kHz to 192 kHz Sample
Rates Independently.
✦ Digital Volume Control
– +6.0 dB to -57.5 dB in 0.5 dB Steps
– Zero Cross and/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 50 ms
ANALOG to DIGITAL FEATURES
✦ ADC1 & ADC2
– 105 dB Dynamic Range (A-wtd)
– -88 dB THD+N
– Differential Balanced or Single-ended
Inputs
– Analog Programmable Gain Amplifier
(PGA) ±12 dB, 1.0 dB Steps, with Zero
Cross Transitions and Mute
✦ MIC Inputs
– Pre-amplifier with Selectable 0 dB, +10 dB,
+20 dB, and +30 dB Gain Settings
– Programmable, Low-noise MIC Bias Level
✦ Each ADC Supports 8 kHz to 96 kHz Sample
Rates Independently
✦ Additional Digital Attenuation Control
– -13.0 dB to -51.0 dB in 1.0 dB steps
– Zero Cross and/or Soft Ramp Transitions
✦ Digital Interface for Two Dual Digital Mic Inputs
✦ Independent Support of D0 and D3 Power
States for Each ADC