Dual 160 MHz

Rail-to-Rail Amplifier

AD8042

Rev. E

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FEATURES

Single AD8041 and quad AD8044 also available

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

Output swings to within 30 mV of either rail

Input voltage range extends 200 mV below ground

No phase reversal with inputs 0.5 V beyond supplies

Low power of 5.2 mA per amplifier

High speed and fast settling on 5 V

160 MHz, −3 dB bandwidth (G = +1)

200 V/μs slew rate

39 ns settling time to 0.1%

Gain flatness of 0.1 dB to 14 MHz

0.02% differential gain error

0.04° differential phase error

Low distortion: −64 dBc worst harmonic @ 10 MHz

Drives 50 mA 0.5 V from supply rails

APPLICATIONS

Video switchers

Distribution amplifiers

Analog-to-digital drivers

Professional cameras

CCD Imaging systems

Ultrasound equipment (multichannel)

GENERAL DESCRIPTION

The AD8042 is a low power voltage feedback, high speed amplifier

designed to operate on +3 V, +5 V, or ±5 V supplies. It has true

single-supply capability with an input voltage range extending

200 mV below the negative rail and within 1 V of the positive rail.

2.5V

5.0V

0V

G = +1

1V

1µs

CONNECTION DIAGRAM

8

7

6

5

OUT1

–IN1

+IN1

OUT2

–IN2

+IN2

1

2

3

4

AD8042

Figure 2. 8-Lead PDIP and 8-Lead SOIC_N

The output voltage swing extends to within 30 mV of each rail,

providing the maximum output dynamic range. Additionally, it

features gain flatness of 0.1 dB to 14 MHz while offering differential

gain and phase error of 0.04% and 0.06° on a single 5 V supply.

This combination of features makes the AD8042 useful for

professional video electronics, such as cameras, video switchers,

or any high speed portable equipment. The low distortion and

fast settling of the AD8042 make it ideal for buffering single-

supply, high speed analog-to-digital converters (ADCs).

The AD8042 offers a low power supply current of 12 mA

maximum and can run on a single 3.3 V power supply. These

features are ideally suited for portable and battery-powered

applications where size and power are critical.

The wide bandwidth of 160 MHz along with 200 V/μs of slew

rate on a single 5 V supply make the AD8042 useful in many

general-purpose, high speed applications where single supplies

from +3.3 V to +12 V and dual power supplies of up to ±6 V are

needed. The AD8042 is available in 8-lead PDIP and 8-lead

SOIC_N packages.

15

12

9

6

3

0

–3

–6

–9

–12

–15

1

500

100

10

FREQUENCY (MHz)

G = +1

Figure 3. Frequency Response