AD4131-8BCBZ-RL7

AD4131-8 is a 16bit sigma-delta ADC with integrated PGA. It is an ultra-low power, high precision, measurement solution for low bandwidth battery operated applications. The fully integrated analogue front end includes a multiplexer for up to 16 single-ended or eight differential inputs, programmable gain amplifier, 16bit sigma-delta analogue-to-digital converter, on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and duty cycling. It allows to measure low frequency signals with a current consumption of 28.5μA and 32.5μA while continuously converting, and even lower average currents when using one of the duty cycling options. Application includes smart, wireless battery and harvester powered sensor nodes transmitters, portable instrumentation, temperature measurement thermocouple, RTD, thermistors, pressure measurement: bridge transducers, healthcare and wearables.

• 5µA duty cycling mode (ratio = 1/16), 0.5µA standby mode, 0.1µA power-down mode
• Built-in features for system level power savings
• Single supply as low as 1.71V increasing battery length
• RMS noise 25nV rms at 1.17 SPS (gain = 128) to 48nV/√Hz
• Output data rate range from 1.17SPS to 2.4KSPS
• Band gap reference with 15ppm/°C maximum drift, PGA with rail-to-rail analogue input
• Matched programmable excitation currents for RTDs, on-chip bias voltage generator for thermocouples
• Low-side power switch for bridge transducers, sensor open wire detection
• Internal temperature sensor and oscillator, self and system calibration
• 35-ball WLCSP package, temperature range from -40°C to +105°C

Uwagi

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