DAC7800, 7801, 7802

12

SBAS005A

www.ti.com

FIGURE 8. 13-Bit Bipolar DAC.

1

C

10pF

I

OUT A

DAC A

DAC B

R

FB A

DAC780X

DGND

V

DD

+5V

A1

DAC7802 has a single analog common, AGND.

A1 OPA602 or 1/2 OPA2107.

REF102

±10V

13 Bits

V

REF B

+15V

V

REF A

R

R

R

AGND B

AGND A

+10V

I

OUT B

R

FB B

2

C

10pF

A2

R

C

D

INA105

2

4

6

1µF

2

3

6

1

V

REF 2

DAC 2

DAC 1

DAC 3

Gain Adjust

Filter Input

V

REF 3

I

OUT 3

AGND 3

High-Pass Out

Band-Pass

Out

Low-Pass

Out

UAF 42

C

C

RR

R

R

DAC780X

V

REF 1

I

OUT 1

AGND 1

I

OUT 2

AGND 2

DAC 4

Q Adjust

V

REF 4

I

OUT 4

AGND 4

R

FB 4

f

R = 50k

C = 1000pF ±0.5%

Ω ±0.5%

1/2 DAC780X

1/2 DAC780X

1

5

13

12

3

14

7

2

11

8

4

6

FIGURE 9. Digitally Programmable Universal Active Filter.