CS5345

CS5345 104 dB, 24-Bit, 192 kHz Stereo Audio ADC A/D Features  Multi-Bit Delta Sigma Modulator  104 dB Dynamic Range  -95 dB THD+N  Stereo 6:1 Input Multiplexer  Programmable Gain Amplifier (PGA) – ± 12 dB Gain, 0.5 dB Step Size – Zero Crossing, Click-Free Transitions  Stereo Microphone Inputs – +32 dB Gain Stage – Low-Noise Bias Supply  Up to 192 kHz Sampling Rates  Selectable Serial Audio Interface Formats – Left-Justified up to 24-bit – I²S up to 24-bit  High-Pass Filter or DC Offset Calibration System Features  Power-Down Mode  +3.3 V to +5 V Analog Power Supply, Nominal  +3.3 V to +5 V Digital Power Supply, Nominal  Direct Interface with 1.8 V to 5 V Logic Levels  Pin-Compatible with CS4245 General Description The CS5345 integrates an analog multiplexer, programmable gain amplifier, and stereo audio analog-to-digital converter. The CS5345 performs stereo analog-to-digital (A/D) conversion of up to 24-bit serial values at sample rates up to 192 kHz. A 6:1 stereo input multiplexer is included for selecting between line-level and microphone-level inputs. The microphone input path includes a +32 dB gain stage and a low-noise bias voltage supply. The PGA is available for line or microphone inputs and provides gain/attenuation of ± 12 dB in 0.5 dB steps. The output of the PGA is followed by an advanced 5thorder, multi-bit delta sigma modulator and digital filtering/decimation. Sampled data is transmitted by the serial audio interface at rates from 4 kHz to 192 ...