TC7106 데이터 시트보기 (PDF) - TelCom Semiconductor Inc => Microchip

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TC7106

3-1/2 DIGIT A/D CONVERTERS

TelCom Semiconductor Inc => Microchip 

3-1/2 DIGIT A/D CONVERTERS

PIN DESCRIPTION

Pin No.

40-Pin PDIP

(Normal)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

Pin No.

40-Pin PDIP

(Reverse)

(40)

(39)

(38)

(37)

(36)

(35)

(34)

(33)

(32)

(31)

(30)

(29)

(28)

(27)

(26)

(25)

(24)

(23)

(22)

(21)

(20)

22

(19)

23

(18)

24

(17)

25

(16)

26

(15)

27

(14)

28

(13)

29

(12)

Symbol

V+

D1

C1

B1

A1

F1

G1

E1

D2

C2

B2

A2

F2

E2

D3

B3

F3

E3

AB4

POL

BP

GND

G3

A3

C3

G2

V–

VINT

VBUFF

CAZ

30

(11)

31

(10)

32

(9)

33

(8)

V

–

IN

V

+

IN

ANALOG

COMMON

C

–

REF

TELCOM SEMICONDUCTOR, INC.

1 TC7106

TC7106A

TC7107

TC7107A

2

Description

Positive supply voltage.

Activates the D section of the units display.

Activates the C section of the units display.

Activates the B section of the units display.

Activates the A section of the units display.

Activates the F section of the units display.

Activates the G section of the units display.

Activates the E section of the units display.

Activates the D section of the tens display.

Activates the C section of the tens display.

Activates the B section of the tens display.

Activates the A section of the tens display.

Activates the F section of the tens display.

Activates the E section of the tens display.

Activates the D section of the hundreds display.

Activates the B section of the hundreds display.

Activates the F section of the hundreds display.

Activates the E section of the hundreds display.

Activates both halves of the 1 in the thousands display.

Activates the negative polarity display.

LCD Backplane drive output (TC7106A).

Digital ground (TC7107A).

Activates the G section of the hundreds display.

Activates the A section of the hundreds display.

Activates the C section of the hundreds display.

Activates the G section of the tens display.

Negative power supply voltage.

Integrator output. Connection point for integration capacitor. See

INTEGRATING CAPACITOR section for more details

Integration resistor connection. Use a 47kΩ resistor for a 200mV full-

scale range and a 470kΩ resistor for 2V full-scale range.

The size of the auto-zero capacitor influences system noise. Use a

0.47µF capacitor for 200mV full scale, and a 0.047µF capacitor for

2V full scale. See Paragraph on AUTO-ZERO CAPACITOR for more

details.

The analog LOW input is connected to this pin.

The analog HIGH input signal is connected to this pin.

This pin is primarily used to set the analog common-mode voltage

for battery operation or in systems where the input signal is

referenced to the power supply. It also acts as a reference voltage

source. See paragraph on ANALOG COMMON for more details.

See pin 34.

3

4

5

6

7

8

3-187

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