SNOSDJ6A May 2025 – October 2025 TLV9020L , TLV9022L , TLV9030L , TLV9032L
PRODMIX
Configure the circuit as shown in Figure 7-2. Make R1, R2 and R3 each 10MΩ resistors. These three resistors are used to create the positive and negative thresholds for the window comparator (VTH+ and VTH–).
With each resistor being equal, VTH+ is 2.2V and VTH- is 1.1V. Large resistor values such as 10MΩ are used to minimize power consumption. The resistor values can be recalculated to provide the desired trip point values.
The sensor output voltage is applied to the inverting and non-inverting inputs of the two comparators. Using two open-drain output comparators allows the two comparator outputs to be wire-ORed together.
The respective comparator outputs latches low when the sensor is less than 1.1V or greater than 2.2V. The respective comparator outputs are high when the sensor is in the range of 1.1V to 2.2V (within the "window"), as shown in Figure 7-3.
The CLR pin must be toggled high to low to reset the output and arm the comparator.