NAFE73388B40BSMP

Analog Front End (AFE) Overview

The NAFE73388B40BSMP is a universal ±25 V, 8-input high-speed analog front-end (AFE) with excitation sources. It integrates low-leakage HV multiplexers, a programmable gain amplifier (PGA), and a 24-bit Delta-Sigma ADC. Key electrical parameters include an operating temperature range of -40 °C to +125 °C, power supply requirements of HV: ±7 V to ±24 V and LV: 3.3 V, and data rates from 15 SPS to 576 kSPS. The device features ±36 V overvoltage protection, 160 mW power consumption, and a 64-pin HVQFN package.

Analog Front End (AFE) Feature Summary

• Eight configurable HV inputs supporting single-ended or differential modes up to ±25 V
• Integrated precise voltage and current excitation sources for sensors like RTDs
• High accuracy with 0.005% FS room temperature precision after user calibration
• Robust protection including 7.5 kV HBM ESD and IEC61000-4-5 2 kV surge immunity

Analog Front End (AFE) Applications

• Data acquisition systems
• PLC and DCS I/O modules
• Industrial automation and process control

Analog Front End (AFE) Procurement Notes

Verify the ordering suffix B40BSMP corresponds to the HVQFN64 package in a 13-inch Q2/T1 reel format. Confirm the specific part number matches the required factory-calibrated configuration as indicated in the product family documentation. Ensure compatibility with the specified 32 MHz SPI interface and power supply voltages during integration.

Analog Front End (AFE) Selection Notes

Select this model for applications requiring high-speed data acquisition up to 576 kSPS with integrated excitation sources. Compare against the NAFE13388 if lower power consumption is prioritized over speed. Ensure the system design accommodates the ±7 V to ±24 V high-voltage supply rails and the 3.3 V logic levels for the SPI interface.

Analog Front End (AFE) Part Context

This component belongs to the NXP NAFE family of industrial-grade analog front-ends. It is designed for scalable analog I/O modules and data acquisition systems. The device offers pin-to-pin and software compatibility with other members of the NAFE series, facilitating platform reuse across different product portfolios.

Analog Front End (AFE) Replacement Considerations

The NAFE13388B40BSMP is a pin-compatible alternative within the same family, offering similar functionality but optimized for low-power applications rather than high-speed performance.