Datasheet

ManualsBrandsANALOG DEVICES ManualsData collecting ICsData acquisition IC - ADC 12 Bit PDIP 28

7

8

9

AD7874

REV. C

–14–

IC1

AD713

C4

C3

C1

C2

LK1

LK2

LK3

LK4

C7

C8

V

DD

C5

C6

V

SS

IN

OUT

SKT1

SKT2

SKT3

SKT4

A

B

AB

CLK

SKT5

LK5

REFERENCE

SKT6

CONVST

SKT6

IC5

IC5

R1R2

A

B

SKT8

DGND

11

22

8

5

23, 24

2

1

3

25, 26

DATA BUS

5V

+

V

SS

CLK

IC2

AD7874

V

DD

CONVST

DB11

DB0

INT

CS

RD

REF IN

DGND

AGND

V

IN3

V

IN4

V

IN1

V

IN2

IC3

78L05

V

+

IC4

79L05

REF

OUT

V–

Figure 20. Data Acquisition Circuit Using the AD7874

Figure 21. PCB Silkscreen for Figure 20