TS9002 datasheet(10/11 Pages) TOUCHSTONE

Part #	TS9002

Description	Low-Power Single/Dual-Supply Dual Comparator with Reference

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Manufacturer	TOUCHSTONE [Touchstone Semiconductor Inc]

Direct Link	http://www.touchstonesemi.com

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10 / 11 page

TS9002

Page 10

TS9002DS r1p0

RTFDS

In this example, a

1.9kΩ, 1% standard

value resistor is selected for R2.

5.

Calculating R3.

R

(R2 + R ) R2

1.0

MΩ – 1.9kΩ

1.00 MΩ

In this

example, a 1MΩ, 1% standard value

resistor is selected for R3.

6.

Using the equations below, verify all resistor

values selected:

VOTH (VREF + VHYS) x

R1 + R2 + R

R1

= 5.474V

VOTH (VREF VHYS) x

R1 + R2 + R

(R1+R2)

4.4 4V

Where the hysteresis voltage is given by:

VHYS VREF x

R5

R4

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