Product Details
●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.
●Eight flexible setups with configurability for output data rate, digital filter mode, offset/gain error correction, reference selection, buffer enables and more. This per channel configurability extends to the output data rate used for each channel when using sinc5 + sinc1 filter.
●Sinc5 + sinc1 filter maximizes channel scan rate, and sinc3 filter maximizes resolution and enhanced 50 Hz/60 Hz rejection, with four selectable options to maximize rejection.
●Integrated diagnostic features, including CRC, register checksum, temperature sensor, crosspoint multiplexer, burnout currents, and GPIOs/GPOs.
●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
●### Features and Benefits
● 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 or 5 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
