The CS4234 is a highly versatile codec that combines 4 channels of high performance analog to digital conversion, 4 channels of high performance digital to analog conversion for audio, and 1 channel of digital to analog conversion to provide a nondelayed audio reference signal to an external Class H tracking power supply. If not used to drive a tracking power supply, the 5th DAC can instead be used as a standard audio grade DAC, with performance specifications identical to that of the 4 DACs in the audio path. Additionally, the CS4234 includes tunable group delay for each of the 4 audio DAC paths to provide lead time for the external switch-mode power supply, and a nondelayed path into the DAC outputs for input signals requiring a low-latency path to the outputs.
- DAC Features:-
- Advanced multibit Delta–Sigma modulator
- 24-bit resolution
- Differential or single-ended outputs
- -109 dB dynamic range (A-weighted)
- -90 dB THD+N
- 2 VRMS full-scale output into 3-k ohm AC load
- Rail-to-rail operation
- Programmable group delay in 4-channel audio output path
- ADC Features:-
- Advanced multibit Delta–Sigma modulator
- 24-bit resolution
- Differential inputs
- -105 dB dynamic range (A-weighted)
- -88 dB THD+N
- 2 VRMS full-scale input
- System Features:-
- TDM, left justified, and I²S serial inputs and outputs
- Nondelayed low-latency path
- Supports sample rates up to 96 kHz
- Can be used with any integrated Class AB amplifier IC or discrete amplifier solution
- Increases efficiency of Class AB amplifiers
- Creates audio tracking reference signal for external switch-mode power supply
- Internal envelope tracking of up to 32 channels
- Input path for externally generated tracking signal
- Available in Tape and Reel Container (CS4234-ENZR)
- Applications: Automotive Audio Amps, Mixing Consoles and Effects Processor
