NAFE11348B40BSK

Analog Front End (AFE) Overview

The NAFE11348B40BSK is an industrial-grade, highly configurable analog front-end (AFE) featuring eight universal high-voltage inputs. It integrates a low-leakage multiplexer, programmable gain amplifier, and a 16-bit Delta-Sigma ADC with data rates from 7.5 SPS to 288 kSPS. The device supports ±25 V single-ended or differential inputs with ±36 V overvoltage protection. Key features include 0.005% FS accuracy after user calibration, integrated precise voltage sources for system self-calibration, and robust diagnostic capabilities. It operates on ±7 V to ±24 V HV and 3.3 V LV supplies within a -40 °C to +125 °C temperature range.

Analog Front End (AFE) Feature Summary

• Eight configurable HV inputs supporting single-ended or differential modes up to ±25 V
• 16-bit resolution with data rates ranging from 7.5 SPS to 288 kSPS
• Integrated precise voltage sources for end-to-end system self-calibration
• Robust protection including ±36 V overvoltage tolerance and 7.5 kV HBM ESD

Analog Front End (AFE) Applications

• Programmable Logic Controller (PLC) I/O modules
• Industrial automation and process control systems
• High-precision sensor and data acquisition systems

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix 'K' against the manufacturer's documentation to confirm the tray packing method and minimum order quantity requirements. Ensure the component matches the 16-bit resolution variant distinct from the 24-bit NAFE11388 family members. Confirm that the factory calibration coefficients are included as specified for this part number.

Analog Front End (AFE) Selection Notes

Select the NAFE11348B40BSK when a 16-bit resolution is sufficient for the application, offering lower power consumption compared to the 24-bit variants. This part is suitable for applications requiring fast data rates up to 288 kSPS without the need for excitation sources. Verify compatibility with the host processor via the 32 MHz SPI interface and ensure the system design accommodates the required HV and LV power supply rails.

Analog Front End (AFE) Part Context

This component belongs to the NXP NAFE family of universal input analog front-ends designed for industrial applications. It shares pinout and software compatibility with other family members like the NAFE11388 and NAFE71388, allowing for scalable designs. The primary distinction lies in its 16-bit ADC resolution and lower power profile, making it optimized for cost-sensitive or power-constrained high-speed data acquisition tasks.

Analog Front End (AFE) Replacement Considerations

The NAFE11388B40BS offers identical form, fit, and function but provides 24-bit resolution instead of 16-bit. The NAFE11148B40BS is a 16-bit alternative but lacks factory calibration coefficients. Ensure any substitute maintains the 64-pin HVQFN package and compatible SPI interface timing.