General Description
The CS5581 is a single-channel, 16-bit analog-to-digital converter capable of 200 kSps conversion rate. The input accepts a single-ended analog input signal. On-chip buffers provide high input impedance for both the AIN input and the VREF+ input. This significantly reduces the drive requirements of signal sources and reduces errors due to source impedances. The CS5581 is a delta-sigma converter capable of switching multiple input channels at a high rate with no loss in throughput. The ADC uses a low-latency digital filter architecture.

FEATUREs
❐ Single-ended Analog Input
❐ On-chip Buffers for High Input Impedance
❐ Conversion Time = 5 µS
❐ Settles in One Conversion
❐ Linearity Error = 0.0007%
❐ Signal-to-Noise = 81 dB
❐ S/(N + D) = 81 dB
❐ DNL = ±0.1 LSB Max.
❐ Self-calibration:
    - Maintains accuracy over time & temperature.
❐ Simple three/four-wire serial interface
❐ Power Supply Configurations:
    - Analog: +5V/GND; IO: +1.8V to +3.3V
    - Analog: ±2.5V; IO: +1.8V to +3.3V
❐ Power Consumption:
    - ADC Input Buffers On: 85 mW
    - ADC Input Buffers Off: 60 mW