OPA548

16

SBOS070B

www.ti.com

I

LIM

V–

V+

R

1

1k

Ω

R

2

4k

Ω

OPA548

OPA548

V

O

I

(2)

G = 1 +

V

IN

800

Ω

800

Ω

0.25

Ω

4k

Ω

1k

Ω

0.25

Ω

NOTES: (1) Works well for G < 10. Input offset causes output current to flow between amplifiers

with G > 10. Gains (resistor ratios) of the two amplifiers should be carefully matched to ensure

equal current sharing. (2) As configured (I

(peak). Each amplifier is limited to 5A (peak). Other current limit values may be obtained, see

Figure 3, “Adjustable Current Limit”.

I

LIM

V–

V+

R

3

1k

Ω

R

4

4k

Ω

FIGURE 21. Parallel Output for Increased Output Current.