NXP NAFEx3388 | Avnet Silica

The NAFE13388 / NAFE73388 / NAFE13188 is a highly configurable industrial-grade multichannel universal input analog 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 analog-to-digital converter (ADC), precise voltage and current excitation source, and low-drift voltage reference. All of the HV analog pins are diode-protected internally for electromagnetic compatibility (EMC) and miswiring scenarios. The NAFE13388 / NAFE73388 / NAFE13188 are 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.

The NAFE13388 / NAFE13188 are dedicated to low-power applications with factory and non-factory calibration option respectively. The NAFE73388 supports high-speed data rate up to 576 kSPS.

The NAFE13388, NAFE73388 and NAFE13188 are designed for programmable logic controllers (PLC), I/O modules, data loggers, instrumentation and high precision sensor and data acquisition systems.

Key features

• ±3 ⁰C Internal temperature sensor
• Precise excitation voltage and current sources
• 0.2% Internal oscillator accuracy at room temperature
• Diagnostic system for faults detection and prediction
• CRC error detection
• Ten GPIOs
• 32 MHz SPI interface
• Robust 8 kV HBM ESD and IEC61000-4-5 2 kV surge protection
• Power supply: HV: ±7 V to ±24 V, LV: 3.3 V
• Power consumption: 150 mW for low power version and 160 mW for the high speed
• Operating temperature range TA: -40 ⁰C to +125 ⁰C
• Package: 64 pin, 9 mm x 9 mm x 0.85 mm HVQFN

Applications

• Industrial
  • Data Acquisition System
  • Industrial Automation and Process Control
  • Programmable Logic Controller (PLC) and Remote I/O