TC826 Просмотр технического описания (PDF) - TelCom Semiconductor Inc => Microchip

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TC826

A/D CONVERTER WITH BAR GRAPH DISPLAY OUTPUT

TelCom Semiconductor Inc => Microchip 

A/D CONVERTER WITH

BAR GRAPH DISPLAY OUTPUT

1

TC826

PIN DESCRIPTION

Pin No.

(64-Plastic

Quad Flat

Package)

Symbol

1

NC

2

ANALOG

COMMON

3

+IN

4

-IN

5

REF IN

6

CREF +

7

CREF–

8

VDD

9

VBUF

10

CAZ

11

VINT

12

VSS

13

OSC1

14

OSC2

15

BP

16

BAR 0

17

NC

18

BAR 1

19

BAR 2

20

BAR 3

21

BAR 4

22

BAR 5

23

BAR 6

24

BAR 7

25

BAR 8

26

BAR 9

27

BAR 10

28

BAR 11

29

BAR 12

30

BAR 13

31

BAR 14

32

BAR 15

33

BAR 16

34

BAR 17

35

BAR 18

36

BAR 19

37

BAR 20

38

BAR 21

39

BAR 22

40

BAR 23

2

Description

Establishes the internal analog ground point. Analog common is set to 2.9V below the positive supply

by an internal zener reference circuit. The voltage difference beween VDD and analog-common can be

used to supply the TC826 voltage reference input at REF IN (Pin 5).

Positive analog signal input.

Negative analog signal input.

Reference voltage positive input. Measured relative ato analog-common. REF IN ≈ Full-Scale/2.

Reference capacitor connection.

Reference capacitor connection.

Positive supply terminal.

Buffer output. Integration resistor connection.

Negative comparator input. Auto-zero capacitor connection.

Integrator output. Integration capacitor connection.

Negative supply terminal.

Oscillator resistor (ROSC) connection.

Oscillator resistor (ROSC) connection.

LCD Backplane driver.

LCD Segment driver: Bar 0

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

LCD Segment driver:

Bar 1

Bar 2

Bar 3

Bar 4

Bar 5

Bar 6

Bar 7

Bar 8

Bar 9

Bar 10

Bar 11

Bar 12

Bar 13

Bar 14

Bar 15

Bar 16

Bar 17

Bar 18

Bar 19

Bar 20

Bar 21

Bar 22

Bar 23

3

4

5

6

7

8

TELCOM SEMICONDUCTOR, INC.

3-173

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