TLV9032DDFR.A datasheet(28/85 Pages) TI2

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• Alert (logic low output) when an input signal is less than 1.1V

• Alert (logic low output) when an input signal is greater than 2.2V

• Alert signal is active low

• Operate from a 3.3V power supply

7.2.1.2 Detailed Design Procedure

Configure the circuit as shown in Figure 7-7. Connect VCC to a 3.3V power supply and VEE to ground. 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 noninverting inputs of the two comparators. Using two

open-drain output comparators allows the two comparator outputs to be Wire-OR'ed together.

The respective comparator outputs are 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 7-8.

7.2.1.3 Application Curve

VTH+ = 2.2 V

VTH± = 1.1 V

VIN

OUT

Figure 7-8. Window Comparator Results

For more information, see the Window comparator circuit application note.

7.2.2 Square-Wave Oscillator

Square-wave oscillator can be used as low cost timing reference or system supervisory clock source. A push-

pull output (TLV903x) is recommended for best symmetry.

100 pF

100 kŸ

VCC

100 kŸ

OUT

100 kŸ

Figure 7-9. Square-Wave Oscillator

TLV9020, TLV9021, TLV9022, TLV9024, TLV9030, TLV9031, TLV9032, TLV9034

SNOSDA3H – JUNE 2020 – REVISED NOVEMBER 2025

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