NXP's N-AFE Analog Front-End Family for Seamless Factory Automation

NXP's N-AFE family brings smart factory features to industrial automation.

These devices offer several key benefits:

  • Software-defined flexibility: N-AFE's configurable inputs can measure voltage, current, resistance, or temperature, allowing for easy adaptation to different factory needs.
  • Improved product quality: Enhanced measurement accuracy and precision ensure consistent product quality on the manufacturing floor.
  • Predictive maintenance: Advanced diagnostics built into N-AFE enable early detection of potential issues, reducing downtime and improving efficiency.

N-AFE simplifies design by integrating essential signal chain components like protections, multiplexers, amplifiers, analog-to-digital converters (ADCs), and digital filtering. Manufacturers can choose from various options like low-power or high-speed models, with or without voltage/current excitation, all while maintaining compatibility for easier implementation.

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Key Applications

Supplier

NXP

NXP Semiconductors enables secure connections and infrastructure for a smarter world, advancing solutions that make lives easier, better and safer.

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Voltage and Current Sensing (GBLS)

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Voltage and Current Sensing

Configure AFE to sense currents in multiple ranges.

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Industrial Field Instruments (GBLS)

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Industrial Field Instruments

Industrial Field Instruments that Maintain Accuracy Over Temperature.

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Resistance Temperature Detectors (GBLS)

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Resistance Temperature Detectors

NXP N-AFE RTD (Resistance temperature detector)/PTC/NTC.

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Data Acquisition and Logger System

Develop Highly Accurate, Integrated and Configurable Systems with NAFE.

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Thermocouple

Thermocouple with Cold Junction Compensation.

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Servo Motors

Servo Motors Torque and Speed Control Board.

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N-AFE application list

Application Short description
Servo Motors

Tacho input 0-10V
RTD 

Reading RTD and convert directly to digital
Strain Gauges / Load cells

Measuring strain - weight
PLC

Compact and big - scalable
Medical Ultrasound

When there is high voltage (10V range) - TAC - Tomography
Electrochemical Sensing

At low data rate 50nV
Thermocouple

Including cold junction compensation
Pressure Sensors

For analog output pressure sensors
NTC

 Including constant current supply
Voltage & Current Sensing

Differential and single-ended – multiple scale
Data Acquisition / Loggers

Highly flexible and configurable

N-AFE Parts List

Part TUE [%FS] INL [µV] PGA Gain ADC Resolution SPS [max] Excitation Source V/I Factory Calibration Power Consumption [mW]
NAFE11348B40BS 0.006 83 0.2 to 0.8 16 288000 No Y 125
NAFE11388B40BS 0.0050000004 10 0.2 to 0.8 24 288000 No Y 125
NAFE13188B40BS 0.0050000004 10 0.2 to 16 24 288000 Yes N 150
NAFE13388B40BS 0.0050000004 10 0.2 to 16 24 288000 Yes Y 150
NAFE71388B40BS 0.0050000004 10 0.2 to 0.8 24 576000 No Y 135
NAFE73388B40BS 0.0050000004 10 0.2 to 16 24 576000 Yes Y 160

All parts have the same:

  • Package type - HVQFN64 
  • Number of channels - 8 
  • Max Differential Input Range [±V] - 25
  • Input - Differential, Pseudo-Differential, Single Ended
  • ADC Architecture - Sigma Delta 
  • Interface and Input Control - SPI 
  • Operating Temperature (Min-Max) (℃) = -40 to 125 
  • Additional Features - 10 GPIOs, Internal Temperature sensor

N-AFE block diagram

NXP N-AFE Block Diagram

AI Module (AFE + MCU)

NXP N-AFE AI Module

Universal Input Configuration Challenges

NXP N-AFE Configuration Challenges

N-AFE part numbering

NXP N-AFE Part Numbering

Technologies

Analog Solutions

See Avnet Silica's Analog offering including interface, power management and signal chain solutions. See supplier solutions, resources and more.

Analog Solutions
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