NAFE33352B40BSE

Analog Front End (AFE) Overview

The NAFE33352B40BSE is a low-power, fully configurable analog input/output analog front-end (AIO-AFE) from NXP. It integrates one software-configurable AIO channel and two universal input channels within a compact 6mm x 6mm TQFN-40 package. The device supports supply voltages from ±7V to ±28V and operates across a temperature range of -40°C to 125°C. Key specifications include a DAC with 14/16/18-bit resolution and an ADC with 16/24-bit resolution. Data rates for the low-power variant reach up to 100 ksps for the DAC and 288 ksps for the ADC. Accuracy is specified at ±0.01% at room temperature and ±0.08% over the full temperature range after calibration.

Analog Front End (AFE) Feature Summary

• Universal I/O Configuration: One configurable AIO channel and two universal inputs supporting ranges of ±12.5V, ±25mA, and 1mΩ-1MΩ.
• High Precision: Factory or user calibration options provide ±0.01% accuracy at room temperature and ±0.08% over the full operating temperature range.
• Integrated Protection: Features ±36V protected I/O (with external TVS for outputs) and short-circuit protection on both input and output channels.
• Functional Safety: Compliant with ISO 26262 through NXP's SafeAssure program, supporting anomaly detection and predictive maintenance.

Analog Front End (AFE) Applications

• Programmable Logic Controllers (PLC)
• Process Control Systems
• Industrial I/O Modules
• Data Loggers

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'B40BSE' against the official datasheet to confirm pinout, calibration status, and packaging details. Ensure the design accounts for external transient voltage suppressors if utilizing the output channels for protection compliance. Confirm long-term availability plans relevant to automotive, telecom, or medical sectors if applicable.

Analog Front End (AFE) Selection Notes

Select the NAFE33352B40BSE for applications requiring low power consumption alongside high precision analog signal conditioning. Choose this part over the NAFE93352 when data rates below 100 ksps are sufficient and power efficiency is prioritized. Verify that the required resolution (up to 18-bit DAC, 24-bit ADC) and input ranges match the sensor or actuator interface requirements.

Analog Front End (AFE) Part Context

The NAFE33352 belongs to the NAFEx3352 family of Universal Fully Configurable Analog Input and Output Analog Front Ends. This family includes the low-power NAFE33352 and the high-speed NAFE93352 variants. The series is designed to minimize system bill of materials by integrating precision amplifiers, references, and converters into a single small-footprint package.

Analog Front End (AFE) Replacement Considerations

The NAFE93352 serves as the high-speed counterpart within the same family, offering higher data rates but potentially different power characteristics. Direct substitution requires verifying that the increased speed does not introduce unwanted power dissipation or that the lower speed of the NAFE33352 meets the application's timing constraints.