Low-Cost, Micropower, Precision, 3-Terminal,

1.2V Voltage Reference

4

_______________________________________________________________________________________

__________Applications Information

Input Bypassing

For the best line-transient performance, decouple the

input with a 0.1µF ceramic capacitor as shown in the

Typical Operating Circuit. Locate the capacitor as

close to the device pin as possible. Where transient

performance is less important, no capacitor is neces-

sary.

Output Bypass

The MAX6120 performs well without an output decou-

pling capacitor. If your application requires an output

charge reservoir (e.g., to decouple the reference from

the input of a DAC), then make sure that the total output

capacitive load does not exceed 10nF.

DAC

LATCH A

DAC A

DAC

LATCH B

DAC B

DAC

LATCH C

LATCH

DAC C

SCLK

OUTA

OUTB

OUTC

LOUT

DIN

+3V

0.1µF

CS

REFAB

REFC

RESET

GND

MAX512

MAX513

MAX6120

1

2

1

2

3

4

56

7

8

9

10

11

12

14

3

0.01µF

Figure 1. 3V, Triple, 8-Bit Serial DAC

Figure 2. Low-Power ±1.2V Reference

+3V

-3V

MAX6120

2

1

3

3

4

6

-1.2V

R

R

+1.2V

2

7

MAX406A

_____________________Pin Description

No Connect—not internally

connected

N.C.

—

Ground

GND

3

Reference Output

2

Input Voltage

1

FUNCTION

NAME

2, 3, 5,

6, 7

4

PIN

1

8

SO

SOT23

___________________Chip Information

TRANSISTOR COUNT: 39