REV. F

AD8038/AD8039

Low Power 350 MHz

Voltage Feedback Amplifiers

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© 2004 Analog Devices, Inc. All rights reserved.

FEATURES

Low Power

1 mA Supply Current/Amp

High Speed

350 MHz, –3 dB Bandwidth (G = +1)

425 V/ s Slew Rate

Low Cost

Low Noise

8 nV/

√Hz @ 100 kHz

600 fA/

√Hz @ 100 kHz

Low Input Bias Current: 750 nA Max

Low Distortion

–90 dB SFDR @ 1 MHz

–65 dB SFDR @ 5 MHz

Wide Supply Range: 3 V to 12 V

Small Packaging: SOT-23-8, SC70-5, and SOIC-8

APPLICATIONS

Battery-Powered Instrumentation

Filters

A/D Drivers

Level Shifting

Buffering

High Density PC Boards

Photo Multipliers

SOIC-8 (R) and SOT-23-8 (RT)

AD8039

8

7

6

5

1

2

3

4

–IN1

+IN1

–IN2

+IN2

PRODUCT DESCRIPTION

The AD8038 (single) and AD8039 (dual) amplifiers are high

speed (350 MHz) voltage feedback amplifiers with an exception-

ally low quiescent current of 1.0 mA/amplifier typical (1.5 mA max).

The AD8038 single amplifier in the SOIC-8 package has a dis-

able feature. Despite being low power and low cost, the amplifier

provides excellent overall performance. Additionally, it offers

ahigh slew rate of 425 V/

µs and low input offset voltage of

3mVmax.

ADI’s proprietary XFCB process allows low noise operation

(8 nV/

√Hz and 600 fA/√Hz) at extremely low quiescent currents.

Given a wide supply voltage range (3 V to 12 V), wide band-

width, and small packaging, the AD8038 and AD8039 amplifiers

are designed to work in a variety of applications where power and

space are at a premium.

The AD8038 and AD8039 amplifiers have a wide input common-

mode range of 1 V from either rail and will swing within 1 V of

each rail on the output. These amplifiers are optimized for driving

capacitive loads up to 15 pF. If driving larger capacitive loads,

a small series resistor is needed to avoid excessive peaking or

overshoot.

The AD8039 amplifier is the only dual, low power, high speed

amplifier available in a tiny SOT-23-8 package, and the single

AD8038 is available in both a SOIC-8 and an SC70-5 package.

These amps are rated to work over the industrial temperature

range of –40

°C to +85°C.

–6

0.1

1000

110

100

–3

0

3

6

9

12

15

18

21

24

FREQUENCY – MHz

G = +5

G = +2

G = +1

G = +10

Figure 1. Small Signal Frequency Response for

±5 V

SOIC-8 (R)

8

7

6

5

1

2

3

4

NC

–IN

+IN

DISABLE

NC

AD8038

NC = NO CONNECT

SC70-5 (KS)

1

2

3

5

4

–IN

+IN

AD8038

+–

CONNECTION DIAGRAMS