NXP N-AFE Voltage & Current Sensing

Configure AFE to sense currents in multiple ranges

Voltage Sensing 

Multiple settings to sense voltages from +0.0373 mV to ± 12.5V (Unipolar Single Ended).

Please note these are suggested settings.

Recommended data rate for noise performance Slowest data rate for least noise Slower data rate for less noisy and stable measurements Faster data rate
Input signal Differential +100 mV Single Ended 1V to 5V Differential +10V

NAFE FS (V)

±0.156

±6.25

±12.5 V

Gain

16X

0.4X

0.2X

Resolution

37.3nV

745nV

3mV

Data Rate (sps)

50

6000

12000

Noise (uVrms)

0.13

19

53.6

Channel Delay

20ms

200ms

100ms

Current Sensing 

Multiple settings, allowing smaller shunt resistors and high precision.

Input Signal +4-20 mA

Shunt Resistor

100 Ω

100 Ω

Gain Setting

1x

0.4x

Voltage Resolution

596nV

1500nV

Data Rate

12000

12000

Channel Delay

16.5us

16.5us

Time Reading

99.8us

99.8us

Overview

NXP N-AFE Overview

Learn how NXP's N-AFE family brings smart factory features to industrial automation and speak to our experts who can support you with your own N-AFE integration.

NAFE Factory Automation