MLX75303 Datasheet, PDF (2/12 Pages) Melexis Microelectronic Systems – Optical Schmitt Trigger

1 Functional Diagram
MLX75303
Optical Schmitt Trigger
2 General Description
The MLX75303 is a CMOS integrated optical Schmitt trigger sensor with an integrated photodiode. The
sensor is intended for automotive applications wherein infrared LEDs are used.
The MLX75303 block diagram is shown in Section 1 and contains following blocks: a trans impedance
amplifier to convert and amplify the photocurrent of the photodiode, a voltage reference, a Schmitt trigger and
an open drain output stage.
3901075303xx
Rev. xxx
Page 2 of 12
Data Sheet
July/07