ICL7121LCJI 데이터 시트보기 (PDF) - Intersil

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ICL7121LCJI

16-Bit Multiplying Microprocessor-Compatible D/A Converter

Intersil 

ICL7121

Pin Descriptions

28 LEAD PIN

CERDIP NAME

PIN DESCRIPTION

1

D0

Bit 0 Least Significant

2

D1

Bit1

3

D2

Bit 2

4

D3

Bit 3

5

D4

Bit 4

6

D5

Bit 5

7

D6

Bit 6

8

D7

Bit 7

9

D8

Bit 8

Input Data Bits (High = True)

10

D9

Bit 9

11

D10

Bit 10

12

D11

Bit 11

13

D12

Bit 12

14

D13

Bit 13

15

D14

Bit 14

16

D15

Bit 15 Most significant

17

PROG Used for programming only. Tie to +5V for normal operation.

18

VREF VREF input to ladder.

19

RINV Summing node for reference inverting amplifier.

20

ROFS Bipolar offset resistor, to -VREF.

21

RFB Feedback resistor for voltage output applications.

22

DGND Digital Ground Return.

23

AGNDF Analog Ground force lines. Use to carry current from internal Analog GND connections.

24

AGNDS Analog Ground sense line. Reference point for external circuitry. Pin should carry minimal current.

25

IOUT Current output pin.

26

V+ Positive Supply.

27

CS CHIP SELECT (active low). Enables register write.

28

WR WRITE, (active low). Writes in register. Equivalent to CS.

3

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