NAFE71388B40BSE

NAFE71388B40BSE is a highly configurable industrial-grade multichannel universal input analogue front-end (AFE) that meets high-precision measurement requirements. The device integrates low-leakage, high-voltage (HV) fast multiplexers, low-offset and low drift programmable gain amplifier (PGA) and buffers, high data-rate 24-bit Delta-Sigma analogue-to-digital converter (ADC), and low-drift voltage reference. All of the HV analogy pins are diode-protected internally for electromagnetic compatibility (EMC) and miswiring scenarios. This is equipped with various diagnostic and supplies supervisory circuitry for condition monitoring and anomaly detection. Two precise calibration voltage sources are made available for ease of end-to-end system self-calibration and predictive maintenance. Application includes data acquisition system, PLC, DCS I/O modules, industrial automation and process control.

• Eight configurable HV inputs, single-ended or differential, with ranges up to ±25V
• Independent configurations for voltage and current ranges, high speed
• Fast data rates, 7.5 SPS to 288KSPS, simultaneous 50Hz/60Hz line rejection
• High accuracy, 0.005%FS accuracy at room after user calibration, low power
• End-to-end calibration with integrated precise voltage sources
• CRC error detection, ±3°C internal temperature sensor, factory calibrated
• 0.2% internal oscillator accuracy at room temperature, 24bit resolution
• Diagnostic system for faults detection and prediction, ten GPIOs, 32MHz SPI interface
• HV: ±7V to ±24V, LV: 3.3V power supply, 125mW low power consumption
• HVQFN64 package, operating temperature range from -40°C to +125°C