NXP Semiconductors N-AFE 8-Channel ±25V Analog Front-End ICs
NXP Semiconductor N-AFE 8-Channel ±25V Analog Front-End (AFE) ICs are highly configurable industrial-grade multichannel universal input AFEs that meet high-precision measurement requirements. The devices integrate low-leakage, high-voltage (HV) fast multiplexers, a low-offset/-drift programmable gain amplifier (PGA) and buffers, a high data-rate 24-bit Delta-Sigma analog-to-digital converter (ADC), and a low-drift voltage reference. The NAFE11388 and NAFE71388 ICs are equipped with various diagnostic and supply supervisory circuitry, allowing condition monitoring and anomaly detection. Two precise calibration voltage sources ease end-to-end system self-calibration and predictive maintenance.
The NAFE11388/NAFE11348 are dedicated to low-power applications, while the NAFE71388 supports high-speed data rates up to 576kSPS. NAFE11388/NAFE11348 and NAFE71388 are designed for programmable logic controllers (PLC), I/O modules, data loggers, instrumentation, and high-precision sensor and data acquisition systems.
Features
- 8x configurable HV inputs
- Single-ended or differential, with ranges up to ±25V
- Independent configurations for voltage and current ranges
- Overvoltage protected up to ±36V for less than one hour
- Fast data rates
- Ranges
- 7.5SPS to 288kSPS for NAFE11388/NAFE11348
- 15SPS to 576kSPS for NAFE71388
- Simultaneous 50Hz/60Hz line rejection
- 17-bit ENOB
- At 72kSPS for NAFE11388/NAFE11348
- At 144kSPS for NAFE71388
- Ranges
- High accuracy
- 0.005%FS accuracy at room temperature after user calibration
- 0.1%FS accuracy over -25°C to +105°C range
- System calibration
- End-to-end calibration with integrated precise voltage sources
- Accurate factory-calibrated products available
- ±3°C internal temperature sensor
- 0.2% internal oscillator accuracy at room temperature
- Diagnostic system for fault detection and prediction
- CRC error detection
- 10x GPIOs
- 32MHz SPI interface
- Robust 7.5kV HBM ESD and IEC61000-4-5 2kV surge protection
- Power supply
- HV: ±7V to ±24V
- LV: 3.3V
- Low power consumption
- 125mW for NAFE11388/NAFE11348
- 135mW for NAFE71388
- -40°C to +125°C operating temperature range
- 64-pin, 9mm x 9mm x 0.85mm HVQFN package
Applications
- Data acquisition system
- PLC and DCS I/O modules
- Industrial automation and process control
Specifications
- NAFE11388/NAFE11348 IC
- 7.5k to 288k sample/s
- 17-bit ENOB at 72ksample/s
- 125mW typical quiescent consumption
- NAFE71388 IC
- 15k to 576k sample/s
- 17-bit ENOB at 144ksample/s
- 135mW typical quiescent consumption
Videos
Block Diagram
Evaluation Boards
NXP Semiconductors NAFE11388-EVB Evaluation Board
Evaluates the NAFE11388 industrial-grade 8-channel universal input analog front-end (AFE).
NXP Semiconductors NAFEx88-EVB Evaluation Boards
Evaluate the NAFEx88 highly configurable, industrial-grade multichannel universal input AFE ICs.
Related IC
NXP Semiconductors NAFEx88 8-Channel Analogue Front End ICs
8-channel universal input analog front-end ICs that meet high-precision measurement requirements.
Published: 2022-11-15
| Updated: 2024-08-30