AD7376

Rev. D | Page 16 of 20

APPLICATIONS INFORMATION

HIGH VOLTAGE DAC

The AD7376 can be configured as a high voltage DAC as high

as 30 V. The circuit is shown in Figure 32. The output is



















 





1

2

1

V

2

.

1

128

)

(

R

R

D

D

V

O

(5)

Where D is the decimal code from 0 to 127.

AD7376

U2

AD8512

V+

V–

AD8512

U1B

ADR512

D1

R2

R1

B

100kΩ

U1A

Figure 32. High Voltage DAC

PROGRAMMABLE POWER SUPPLY

With a boost regulator such as ADP1611, AD7376 can be used

as the variable resistor at the regulator’s FB pin to provide the

programmable power supply (see Figure 33). The output is













































2

128

1

V

23

.

1

R

R

D

V

AB

O

(6)

The output slowly establishes to the final value.

The AD7376 shutdown sleep-mode programming can be used

to program a desirable preset level at power-up.

AD7376

ADP1611

1.23V

150pF

220kΩ

10µF

D1

L1

4.7µF

IN

GND

SS

FB

RT

SW

COMP

U2

C1

0.1µF

R1

100kΩ

A

W

B

10µF

5V

R2

8.5kΩ

22nF

U1

SD

Figure 33. Programmable Power Supply