Calibrated, Quad, 12-Bit

Voltage-Output DACs with Serial Interface

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21

MAX536

MAX537

DAC A

DAC B

DAC C

DAC D

OUTA

2

1

16

15

OUTB

OUTC

OUTD

DGND

AGND

3

4

6

-5V

REFAB

REFCD

13

14

12

5

REFERENCE INPUTS

+15V (+5V)

NOTE: ( ) ARE FOR MAX537.

TP

Figure 10. Unipolar Output Circuit

Figure 11. Bipolar Output Circuit

DAC

OUTPUT

R1

R2

+15V (+5V)

–5V

NOTES: ( ) ARE FOR MAX537.

R1 = R2 = 10k

Ω 0.1%

MAX536

MAX537

DAC B

OUTB

MAX536/MAX537

10k

15k

REFAB

TP

AGND

DGND

6

4

3

-5V

1

14

13

5

+15V

(+5V)

AC

REFERENCE

INPUT

+4V (+750mV)

-4V

(-750mV)

NOTES: ( ) ARE FOR MAX537.

DIGITAL INPUTS NOT SHOWN.

DAC A

OUTA

MAX536/MAX537

REFAB

TP

DGND

6

3

-5V

2

14

13

5

NOTES: ( ) ARE FOR MAX537.

DIGITAL INPUTS NOT SHOWN.

+

-

+

-

AGND

4

+15V (+5V)

Figure 12. AC Reference Input Circuit

Figure 13. AGND Bias Circuit