ADA4851-1/ADA4851-2/ADA4851-4

Rev. C | Page 15 of 20

Table 6. Recommended Values

Supply

Voltage

(V)

Input

Range

(V)

(kΩ)

(kΩ)

Gain

(V/V)

V’

(V)

SINGLE-SUPPLY VIDEO AMPLIFIER

The ADA4851 family of amplifiers is well-suited for portable

video applications. When operating in low voltage single-supply

applications, the input signal is limited by the input stage

headroom. For additional information, see the Headroom

Considerations section. Table 6 illustrates the effects of supply

voltage, input signal, various gains, and output signal swing for

the typical video amplifier shown in Figure 45.

(V)

3

0 to 0.8

1

1

2

1.6

0.8

3

0 to 0.8

0.499

1

3

2.4

1.2

5

0 to 2.8

1

1

2

4.9

2.45

75

Ω CABLE

75

Ω

75

Ω

V

′

U1

C1

2.2

μF

C2

0.01

μF

+

Figure 45. Video Amplifier