REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

AD8005

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1999

FEATURES

Ultralow Power

400

A Power Supply Current (4 mW on

Specified for Single Supply Operation

High Speed

270 MHz, –3 dB Bandwidth (G = +1)

170 MHz, –3 dB Bandwidth (G = +2)

280 V/ s Slew Rate (G = +2)

28 ns Settling Time to 0.1%, 2 V Step (G = +2)

Low Distortion/Noise

4.0 nV/

√Hz Input Voltage Noise @ 10 MHz

Gain Flatness 0.1 dB to 30 MHz

0.11% Differential Gain Error

0.4 Differential Phase Error

APPLICATIONS

Signal Conditioning

A/D Buffer

Power-Sensitive, High-Speed Systems

Battery Powered Equipment

Loop/Remote Power Systems

Communication or Video Test Systems

Portable Medical Instruments

FUNCTIONAL BLOCK DIAGRAM

8-Lead Plastic DIP and SOIC

1

2

3

4

8

7

6

5

AD8005

NC

–IN

+IN

NC

OUT

NC

NC = NO CONNECT

5-Lead SOT-23

4

5

1

2

3

AD8005

–IN

OUT

+IN

PRODUCT DESCRIPTION

The AD8005 is an ultralow power, high-speed amplifier with a

wide signal bandwidth of 170 MHz and slew rate of 280 V/

µs.

This performance is achieved while consuming only 400

µA of

quiescent supply current. These features increase the operating

time of high-speed battery-powered systems without reducing

dynamic performance.

FREQUENCY – MHz

0.1

500

10

100

0

3

2

1

–1

–2

–3

–4

–5

–6

1

G = +2

270 MHz, 400 A

Current Feedback Amplifier

The current feedback design results in gain flatness of 0.1 dB

to 30 MHz while offering differential gain and phase errors of

0.11% and 0.4

°. Harmonic distortion is low over a wide

bandwidth with THDs of –63 dBc at 1 MHz and –50 dBc at

10 MHz. Ideal features for a signal conditioning amplifier or

buffer to a high-speed A-to-D converter in portable video,

medical or communication systems.

The AD8005 is characterized for +5 V and

±5 V supplies and

will operate over the industrial temperature range of –40

°C to

+85

°C. The amplifier is supplied in 8-lead plastic DIP, 8-lead

SOIC and 5-lead SOT-23 packages.

FREQUENCY – MHz

20

10

–40

–60

–80

–100

–50

–70

–90

3RD

1

2ND

G = +2

3RD

2ND