OPA604

11

SBOS019A

www.ti.com

FIGURE 8. Digital Audio DAC I-V Amplifier.

FIGURE 7. High Impedance Amplifier.

FIGURE 9. Using Two OPA604 Op Amps to Double the Output Current to a Load.

OPA604

OPA604

A

1

A

2

V

IN

R

1

R

2

I

1

R

4

51

Ω

I

2

OPA604

R

3

51

Ω

I

Load

V

V

OUT

OPA604

G = 101

(40dB)

100

Ω

10k

Ω

Piezoelectric

Transducer

1M

NOTE: (1) Provides input

bias current return path.

OPA604

V

R

f

C

1

(1)

NOTE: (1) C

C

OUT

2

π R

To low-pass

filter.

OPA604

5

6

9

PCM63

20-bit

D/A

Converter

10