TC7129 View Datasheet(PDF) - TelCom Semiconductor Inc => Microchip

Part Name

Description

Manufacturer

TC7129

4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS

TelCom Semiconductor Inc => Microchip 

4-1/2 DIGIT ANALOG-TO-DIGITAL

CONVERTER WITH ON-CHIP LCD DRIVERS

1

TC7129

ELECTRICAL CHARACTERISTICS: V+ to V– = 9V, VREF = 1V, TA = +25°C, fCLK = 120 kHz, unless otherwise

indicated. Pin numbers refer to 40-pin DIP.

Symbol Parameter

Test Conditions

Min Typ Max Unit

"Weak Output" Current

Sink/Source

Pin 22 Source Current

Pin 22 Sink Current

Pins 20, 21 Sink/Source

Pin 27 Sink/Source

—

3/3

—

µA

—

3/9

—

µA

—

40

—

3

—

µA

—

µA

PIN CONFIGURATIONS

40-Pin PDIP

OSC1 1

OSC3 2

ANNUNICATOR DRIVE 3

B1, C1, CONT 4

A1, G1, D1 5

F1, E1, DP1 6

B2, C2, LO BATT 7

A2, G2, D2 8

F2, E2, DP2 9

B3, C3, MINUS 10

DISPLAY

OUTPUT

A3, G3, D3 11

LINES F3, E3, DP3 12

B4, C4, BC5 13

A4, G4, D4 14

F4, E4, DP4 15

BP3 16

BP2 17

BP1 18

VDISP 19

DP4/OR 20

TC7129CPL

40 OSC2

39 DP1

38 DP2

37 RANGE

36 DGND

35 REF LO

34 REF HI

33 IN HI

32 IN LO

31 BUFF

30 CR–EF

29 CR+EF

28 COM

27 CONT

26 INT OUT

25 INT IN

24 V+

23 V –

22 LATCH/HOLD

21 DP3/UR

44-Pin QFP

44-Pin PLCC

44 43 42 41 40 39 38 37 36 35 34

F1, E1, DP1 1

B2, C2, BATT 2

A2, G2, D2 3

F2, E2, DP2 4

B3, C3, MINUS 5

NC 6

A3, G3, D3 7

F3, E3, DP3 8

B4, C4, BC5 9

A4, G4, D4 10

F4, E4, DP4 11

TC7129CKW

33 REF LO

32 REF HI

31 IN HI

30 IN LO

29 BUFF

28 NC

27 CR–EF

26 CR+EF

25 COM

24 CONT

23 INT OUT

12 13 14 15 16 17 18 19 20 21 22

6 5 4 3 2 1 44 43 42 41 40

F1, E1, DP1 7

39 REF LO

B2, C2, BATT 8

A2, G2, D2 9

38 REF HI

37 IN HI

F2, E2, DP2 10

36 IN LO

B3, C3, MINUS 11

35 BUFF

NC 12

A3, G3, D3 13

F3, E3, DP3 14

B4, C4, BC5 15

TC7129CLW

34 NC

33 CR–EF

32 CR+EF

31 COM

A4, G4, D4 16

30 CONT

F4, E4, DP4 17

29 INT OUT

18 19 20 21 22 23 24 25 26 27 28

2

3

4

5

6

7

8

TELCOM SEMICONDUCTOR, INC.

3-233

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