TLV9302IDDFR datasheet(26/55 Pages) TI

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8.2.1.2 Detailed Design Procedure

This noninverting comparator circuit applies the input voltage (VIN) to the noninverting terminal of the op amp.

Two resistors (R1 and R2) divide the supply voltage (V+) to create a mid-supply threshold voltage (VTH) as

calculated in Equation 1. The circuit is shown in Figure 8-1. When VIN is less then VTH, the output voltage

transitions to the negative supply and equals the low-level output voltage. When VIN is greater than VTH, the

output voltage transitions to the positive supply and equals the high-level output voltage.

In this example, resistor 1 and 2 have been selected to be 100 kΩ, which sets the reference threshold at 20 V.

However, resistor 1 and 2 can be adjusted to modify the threshold using Equation 1. Resistor 1 and 2's values

have also been selected to reduce power consumption, but these values can be further increased to reduce

power consumption, or reduced to improve noise performance.

(1)

8.2.1.3 Application Curve

Time (ms)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-5

comp

Input

Output

Figure 8-2. Comparator Output Response to Input Voltage

TLV9301, TLV9302, TLV9304

SBOS941C – FEBRUARY 2019 – REVISED FEBRUARY 2021

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TLV9302IDDFR Datasheet(PDF) 26 Page - Texas Instruments