NXP Semiconductors NAFEx88 8-Channel Analog Front End ICs
NXP Semiconductors NAFEx88 8-Channel Analog Front End (AFE) ICs are highly configurable industrial-grade 8-channel universal input ICs that meet high-precision measurement requirements. These AFE ICs integrate low-leakage, High-Voltage (HV) fast multiplexers, low-offset and low-drift Programmable Gain Amplifiers (PGA), and buffers. The NAFEx88 AFE ICs are equipped with various diagnostic and supply supervisory circuitry for condition monitoring and anomaly detection. These AFE ICs feature a high data-rate 24-bit Delta-Sigma Analog-to-Digital Converter (ADC), precise voltage and current excitation source, and low-drift voltage reference. The NAFEx88 AFE ICs provide two precise calibration voltage sources for ease of end-to-end system self-calibration and predictive maintenance.
The NAFE13388/NAFE73388 8-Channel ICs are factory-calibrated and the NAFE13188 IC is non-factory-calibrated. Typical applications include data acquisition systems, industrial automation and process control, PLC, and DCS I/O modules.
Features
- Eight configurable HV inputs:
- Up to ±25V for single-ended or differential ranges
- Independent configurations for voltage, current, resistance, Resistance Temperature Detector (RTD), and thermocouple
- Overvoltage protected up to ±36V for less than one hour
- High accuracy:
- 0.005%FS accuracy at room after user calibration
- 0.1%FS accuracy over -25°C to 105°C temperature range
- System calibration:
- End-to-end calibration with integrated precise voltage sources
- Accurate factory-calibrated products available
- ±3°C internal temperature sensor
- Precise excitation voltage and current sources
- 0.2% internal oscillator accuracy at room temperature
- Diagnostic system for fault detection and prediction
- CRC error detection
- Ten GPIOs
- 32MHz SPI interface
- Robust 7.5kV HBM ESD and IEC61000-4-5 2kV surge protection
- Power supply:
- High Voltage (HV): ±7V to ±24V
- Low Voltage (LV): 3.3V
- -40°C to 125°C operating temperature range
- 64 pin, 9mm x 9mm x 0.85mm HVQFN package
Applications
- Data acquisition system
- Programmable Logic Controllers (PLCs) and DCS I/O modules
- Industrial automation and process control
Specifications
- NAFE73388 IC:
- Fast data rates:
- 15SPS to 576kSPS
- 17-bit ENOB at 144kSPS
- 160mW low power consumption
- Fast data rates:
- NAFE13388/NAFE13188 IC:
- Fast data rates:
- 7.5SPS to 288kSPS
- 17-bit ENOB at 72kSPS
- 150mW low power consumption
- Fast data rates:
Videos
Block Diagram
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Published: 2024-03-04
| Updated: 2025-01-22