NXP Semiconductors NAFE11388/NAFE71388

The NAFE11388/71388 is a highly configurable industrial-grade 8 channel universal input Analog Front-End family that meets high precision measurement requirements.

Low-leakage high-voltage fast multiplexers, low offset and low drift PGA and buffers, precision and high data-rate 24-bit delta-sigma ADC.

HV input pins are diode-protected internally for EMC.

Various diagnostic & 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.

NAFE71388 supports High Speed data rate up to 576 kSPS.

 
Key features

• Eight configurable HV inputs
• Fast data rates
• High accuracy / System calibration
• Precise calibration voltage sources

 
Additional features

• Eight configurable HV inputs
  • Single-ended or differential, with ranges up to ±25 V
  • Independent configurations for voltage and current ranges
  • Overvoltage protected up to ±36 V for less than one hour
     
• Fast data rates
  • NAFE11388: 7.5 SPS to 288 kSPS
  • NAFE71388: 15 SPS to 576 kSPS
  • Simultaneous 50 Hz/60 Hz line rejection
  • ENOB:NAFE11388: 17-bit at 72 kSPS / 24-bit at 30 SPS
  • NAFE71388: 17-bit at 144 kSPS / 24-bit at 50 SPS
• High accuracy
  • 0.005 % FS accuracy at room after user calibration
  • 0.1 % FS accuracy over -25 ⁰C to 105 ⁰C
     
• System calibration
  • End-to-end calibration with integrated precise voltage sources
  • Accurate factory-calibrated products available
     
• Key features
  • ±3 ⁰C internal temperature sensor
  • 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: 125 mW for low power version and 135mW 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

• Programmable Logic Controller (PLC)
• I/O Module
• Data logger
• Sensor and data acquisition
• Instrumentation

Available tools

• NAFE11388-EVB