ad4190-4 datasheet pdf

TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. FEATURES ►Input referred noise: 10nV at 3.8SPS, Gain = 128 ►Crosspoint multiplexed analog inputs ►4 Differential/8 Pseudodifferential inputs ►Ultra-low noise integrated PGA, gains of 0.5 to 128 ►Output data rate: 3.8SPS to 62.5kSPS ►Flexible digital filters ►Low latency sinc filters ►Simultaneous 50Hz/60Hz rejection ►Band-gap reference with 5ppm/°C drift typical ►Internal oscillator ►Analog power supply: 4.75V to 5.25V or ±2.5V ►Digital power supply: 1.7V to 5.25V ►Matched programmable excitation current sources ►Low-side power switches ►On-chip bias voltage generator ►Internal temperature sensor ►Four general-purpose inputs/outputs ►Internal and system calibration ►Sensor burnout detection ►Diagnostic functions ► Per channel configuration ►Flexible automatic channel sequencer ► 3- or 4-wire serial interface (Schmitt trigger on SCLK) ►SPI, QSPI, MICROWIRE, and DSP compatible ►TDM compatible interface for data streaming ►Performance temperature range: −40°C to +105°C ►Functional temperature range: −40°C to +125°C ►Available in 32-lead 4mm x 6mm LFCSP package APPLICATIONS ►Industrial process control: PLC/DCS modules ►Temperature measurement ►Pressure measurement ►Medical and scientific instrumentation ►Chromatography ►Environmental monitoring ►Electrical test and measurement ►Instrumentation ►Weigh scale FUNCTIONAL BLOCK DIAGRAM Figure 1. AD4190-4 Functional Block Diagram