TC7107 datasheet(19/26 Pages) MICROCHIP

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DS21455B-page 19

TC7106/A/TC7107/A

FIGURE 10-6:

TC7107 INTERNAL

REFERENCE: 200mV

FULL SCALE, 3RPS,

VIN-TIED TO GND FOR

SINGLE ENDED INPUTS

FIGURE 10-7:

CIRCUIT FOR

DEVELOPING UNDER

RANGE AND OVER

RANGE SIGNALS FROM

TC7106A OUTPUTS

FIGURE 10-8:

TC7106/TC7107:

RECOMMENDED

COMPONENT VALUES

FOR 2.00V FULL SCALE

FIGURE 10-9:

TC7107 OPERATED FROM

SINGLE +5V SUPPLY

100k

Ω

100pF

0.47

µF

47k

Ω

0.22

µF

To Display

0.1

µF

Ω

22k

Ω

Set VREF = 100mV

0.01

µF

Ω

–

To Pin 1

-5V

+5V

TC7107A

To Logic

VCC

V-

To Logic

VCC

V+

CD4077

U/R

O/R

CD4023

OR 74C10

TC7106A

O/R = Over Range

U/R = Under Range

100k

Ω

100pF

0.047

µF

470k

Ω

0.22

µF

To Display

0.1

µF

25k

Ω

24k

Ω

V+

Set VREF = 1V

0.01

µF

Ω

–

V-

To Pin 1

TC7106A

TC7107A

100pF

0.47

µF

47k

Ω

To Display

0.1

µF

Ω

V+

Set VREF = 100mV

10k

Ω

10k

Ω

1.2V

0.01

µF

–

Ω

100k

Ω

0.22

µF

TC7107A

To PIn 1

Note: An external reference must be used in this application.

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