Highly Configurable 8 Channel ±25 V Universal Input Low Power Analog Front-End
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The NAFE11388 / NAFE71388 is a highly configurable industrial-grade 8 channel universal input analog front-end (AFE) family that meets high precision measurement requirements. The device integrates low-leakage high-voltage fast multiplexers, low offset and low drift PGA and buffers, precision and high data-rate 24-bit delta-sigma ADC and a low-drift voltage reference. The analog high voltage (HV) input pins are diode-protected internally for EMC and miswiring scenarios. This device 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.
The NAFE11388 is dedicated to low power applications while the NAFE71388 supports high speed data rate up to 576 kSPS.
The NAFE11388 and NAFE71388 are designed for programmable logic controllers (PLC), I/O modules, data loggers, instrumentation and high precision sensor and data acquisition systems.
For additional information and sample availability, contact your local Sales Office.
Product Details
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
Product Longevity Program
- These products are included in the NXP Product Longevity program ensuring a stable supply of products for 15 years for your embedded designs.
Documentation
Quick reference to our documentation types.
Design Resources
Training
1 trainings