GENERAL DESCRIPTION
Fast settling, highly accurate, low power, 8-/16-channel, multiplexed ADC for low bandwidth input signals with integrated input buffers.
Integrated precision, 2.5 V, low drift (3.5 ppm/°C), band gap reference and integrated oscillator.

FEATURES
    Low power, 8-/16-channel, highly integrated multiplexed analog-to-digital converter (ADC)
    Integration
        Precision analog input buffers and reference input buffers
        2.5 V precision reference (3.5 ppm/°C)
        Cross point multiplexer (enable system diagnostic)
        8 full differential or 16 single-ended channels
        Clock oscillator
        GPIO and GPO pins with automatic external mux control
    Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
    Channel scan data rate: 6.21 kSPS/channel (161 µs settling)
    Performance specifications
        17.5 noise free bits at 31.25 kSPS
        24 noise free bits at 1.25 SPS
        INL: ±3 ppm/FSR
    85 dB rejection of 50 Hz and 60 Hz with 50 ms settling
    Operates with either 3.3 V or5 V supply
        Single supply
            3.3 V or 5 V AVDD1, 2 V to 5 V AVDD2, and 2 V to 5 V IOVDD
        Optional split supply
            AVDD1 and AVSS ± 2.5 V or AVDD1 and AVSS ± 1.65 V
        Current: 1.4 mA
    3-/4-wire serial digital interface (Schmitt trigger on SCLK) CRC error checking SPI, QSPI, MICROWIRE, and DSP compatible
    Package: 40-lead 6 mm × 6 mm LFCSP
    Temperature range: −40°C to +105°C

APPLICATIONS
    Process control: PLC/DCS modules
        Voltage, current, temperature, and pressure measurement Flow meters
    Medical and scientific multichannel instrumentation
    Seismic instrumentation
    Chemical analysis instrumentation: chromatography