Low Cost, High Speed, Rail-to-Rail,

Output Op Amps

ADA4851-1/ADA4851-2/ADA4851-4

Rev. D

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FEATURES

High speed

130 MHz, −3 dB bandwidth

375 V/μs slew rate

55 ns settling time to 0.1%

Excellent video specifications

0.1 dB flatness: 11 MHz

Differential gain: 0.08%

Differential phase: 0.09°

Fully specified at +3 V, +5 V, and ±5 V supplies

Rail-to-rail output

Output swings to within 60 mV of either rail

Low voltage offset: 0.6 mV

Wide supply range: 3 V to 10 V

Low power: 2.5 mA/amplifier

Power-down mode

Available in space-saving packages

6-lead SOT-23, 14-lead TSSOP, and 8-lead MSOP

APPLICATIONS

Consumer video

Professional video

Video switchers

Active filters

PIN CONFIGURATIONS

2

ADA4851-1

TOP VIEW (Not to Scale)

6

–IN

4

5

POWER DOWN

Figure 1. ADA4851-1, 6-Lead SOT-23 (RJ-6)

8

OUT

7

–IN2

6

+IN2

5

ADA4851-2

TOP VIEW

(Not to Scale)

Figure 2. ADA4851-2, 8-Lead MSOP (RM-8)

1

2

3

4

5

6

7

ADA4851-4

TOP VIEW

(Not to Scale)

–IN 1

+IN 1

–IN 2

+IN 2

14

13

12

11

10

9

8

–IN 4

+IN 4

–IN 3

+IN 3

Figure 3. ADA4851-4, 14-Lead TSSOP (RU-14)

GENERAL DESCRIPTION

The ADA4851-1 (single)/ADA4851-2 (dual)/ADA4851-4

(quad) are low cost, high speed, voltage feedback rail-to-rail

output op amps. Despite their low price, these parts provide

excellent overall performance and versatility. The 130 MHz,

−3 dB bandwidth and high slew rate make these amplifiers well

suited for many general-purpose, high speed applications.

The ADA4851 family is designed to operate at supply voltages

as low as +3 V and up to ±5 V. These parts provide true single-

supply capability, allowing input signals to extend 200 mV

below the negative rail and to within 2.2 V of the positive rail.

On the output, the amplifiers can swing within 60 mV of either

supply rail.

With their combination of low price, excellent differential gain

(0.08%), differential phase (0.09º), and 0.1 dB flatness out to

11 MHz, these amplifiers are ideal for consumer video

applications.

The ADA4851 family is designed to work over the extended

temperature range (−40°C to +125°C).

1

100

10

1k

FREQUENCY (MHz)

–6

–4

–5

–2

–3

0

–1

2

1

4

3

G = +1

Figure 4. Small Signal Frequency Response