Corporation

SIGNAL PROCESSING EXCELLENCE

113

DESCRIPTION…

The SP7512 and HS3120 are precision 12-bit multiplying DACs, double–buffered for easy

interfacing with microprocessor busses. Both unipolar and bipolar operation can be accommo-

dated with a minimum of external components. The SP7512 is available for use in commercial

and industrial temperature ranges, packaged in a 28-pin SOIC. The HS3120 is available in

commercial and military temperature ranges, packaged in a 28–pin side–brazed DIP.

s Monolithic Construction

s 12–Bit Resolution

s 0.01% Non-Linearity

s Four–Quadrant Multiplication

s Latch-up Protected

s Low Power – 30mW

s Single +15V Power Supply

910

11

12

(MSB)

Bit 1

23

4

13

14

15

16

56

7

8

17

18

19

20

910

11

(LSB)

BIT 12

2

LDTR

28

V

26

DD1

VDD2

27

GND

8

GND

SP7512, HS3120

4

VREF

22

CE

25

HBE

24

MBE

23

LBE

21

LDAC

5

6

7

1

3

FB1

I01

I02

FB 4

FB 3

R/2

R/2

R

DAC REGISTER

12 BIT MDAC

INPUT REGISTER

INPUT REGISTER

INPUT REGISTER

CONTROL

LOGIC

SP7512 and HS3120

Double–Buffered 12-Bit Multiplying DAC

Corporation

SIGNAL PROCESSING EXCELLENCE