EVB90109
MLX90109 Evaluation Board Manual
Page 6 of 10
REVISION 006 - JUNE 20, 2017
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2.7.
Fast decay circuit
Very small fall time may be required in fast protocol, to be understood by the transponder in the field. This is why, the
EVB90109 include a “fast decay” circuit controlled through the pin FAST_DECAY and composed of the transitstor Q1 and the
diode D1. The following picture shows how to implement the “fast decay” system.
Picture 1: Fast Decay module control, (1) Antenna, (2) MODUR2, (3) FAST_DECAY
