NAFE13144B40BSMP

Analog Front End (AFE) Overview

The NAFE13144B40BSMP is a highly configurable industrial-grade analog front-end (AFE) featuring four universal high-voltage inputs and a 16-bit sigma-delta ADC. It integrates low-leakage multiplexers, programmable gain amplifiers with gains from x0.2 to x16, and precise voltage/current excitation sources for sensors like RTDs. The device supports single-ended or differential configurations up to ±25 V, with overvoltage protection up to ±36 V. Key specifications include a data rate range of 7.5 SPS to 288 kSPS, an internal temperature sensor, and diagnostic supervisory circuits. It operates on HV supplies of ±7 V to ±24 V and LV supply of 3.3 V within a -40 °C to +125 °C temperature range.

Analog Front End (AFE) Feature Summary

• Four configurable HV inputs supporting voltage, current, resistance, RTD, and thermocouple signals with ±25 V range.
• 16-bit ADC resolution with data rates from 7.5 SPS to 288 kSPS and simultaneous 50/60 Hz line rejection.
• Integrated precise voltage and current excitation sources for sensor powering and self-calibration.
• Robust input protection including 7.5 kV HBM ESD and IEC61000-4-5 2 kV surge capability.

Analog Front End (AFE) Applications

• Programmable Logic Controller (PLC) I/O modules
• Industrial data acquisition systems
• Process control instrumentation

Analog Front End (AFE) Procurement Notes

Verify the specific suffix B40BSMP corresponds to the HVQFN64 package in a 13-inch reel packing method. Confirm that the 'No' factory calibration status aligns with system requirements for user-side calibration procedures. Ensure the host interface supports the required 32 MHz SPI communication speed.

Analog Front End (AFE) Selection Notes

Select this part when four channels are sufficient, as it differs from the eight-channel NAFE13388. Choose this 16-bit variant over 24-bit versions if lower power consumption or higher maximum data rates are prioritized over ultimate resolution. Verify compatibility with the host processor's GPIO and SPI capabilities for sequencer control.

Analog Front End (AFE) Part Context

This component belongs to the NAFE family of universal analog front-ends designed for scalable industrial applications. It shares pinout and software compatibility with other family members like the NAFE13148 and NAFE13184, allowing for design flexibility across different channel count and resolution requirements without hardware redesign.

Analog Front End (AFE) Replacement Considerations

Direct replacements within the same family include NAFE13148B40BSMP (8-channel, 16-bit) or NAFE13184B40BSMP (4-channel, 24-bit). These parts are pin-to-pin compatible but differ in channel count and ADC resolution. Ensure the application does not require the factory calibration coefficients available in the NAFE13388 series.