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Quad 3000 V/␮s, 35 mW Current Feedback Amplifier AD8004

FEATURES High Speed 250 MHz –3 dB Bandwidth (G = +1) 3000 V/␮s Slew Rate 21 ns Settling Time to 0.1% 1.8 ns Rise Time for 2 V Step Low Power 3.5 mA/Amp Power Supply Current (35 mW/Amp) Single Supply Operation Fully Specified for +5 V Supply Good Video Specifications (RL = 150 ⍀, G = +2) Gain Flatness 0.1 dB to 30 MHz 0.04% Differential Gain Error 0.10؇ Differential Phase Error Low Distortion –78 dBc THD at 5 MHz –61 dBc THD at 20 MHz High Output Current of 50 mA Available in a 14-Pin PDIP and SOIC

CONNECTION DIAGRAM Plastic (N) and SOIC (R) Packages OUTPUT 1 –IN 2

PRODUCT DESCRIPTION

The AD8004 is a quad, low power, high speed amplifier designed to operate on single or dual supplies. It utilizes a current feedback architecture and features high slew rate of 3000 V/µs making the AD8004 ideal for handling large amplitude pulses. Additionally, the AD8004 provides gain flatness of 0.1 dB to

+IN 3 +VS 4

–IN 6

(TOP VIEW)

11 –VS 10 +IN

2

3

OUTPUT 7

9 –IN 8 OUTPUT

30 MHz while offering differential gain and phase error of 0.04% and 0.10°. This makes the AD8004 suitable for video electronics such as cameras and video switchers.

The outstanding bandwidth of 250 MHz along with 3000 V/µs of slew rate make the AD8004 useful in many general purpose, high speed applications where dual power supplies of up to ± 6 V and single supplies from 4 V to 12 V are needed. The AD8004 is available in the industrial temperature range of –40°C to +85°C.

RF = 1.10kΩ R PACKAGE

+5VS

–2 –3

0

–4

–0.1

–5

+5VS

±5VS

–0.2

–6

–0.3

–7

–0.4

–8

–0.5 10 40 FREQUENCY – MHz

100

–9 500

Figure 1. Frequency Response and Flatness, G = +2

DIFF GAIN – %

–1 ±5VS

0.04 0.03 0.02 0.01 0.00 –0.01 –0.02 –0.03 –0.04

80 IRE RL = 150Ω VS = ±5V RF = 1.21kΩ 1ST

DIFF PHASE – Degrees

G = +2 VIN = 50mV rms RL = 100Ω

NORMALIZED FREQUENCY RESPONSE – dB

0

NORMALIZED FLATNESS – dB

13 –IN 12 +IN

AD8004

+IN 5

+1

1

4

The AD8004 offers low power of 3.5 mA/amplifier and can run on a single +4 V to +12 V power supply, while being capable of delivering up to 50 mA of load current. All this is offered in a small 14-pin DIP or 14-pin SOIC package. These features make this amplifier ideal for portable and battery powered applications where size and power are critical.

APPLICATIONS Image Scanners Active Filters Video Switchers Special Effects

+0.1

14 OUTPUT 1

2ND 3RD 4TH 5TH

6TH

7TH

0.12 0.10 0.08 0.06 0.04 0.02 0.00 –0.02 –0.04

8TH

9TH 10TH 11TH

80 IRE RL = 150Ω VS = ±5V RF = 1.21kΩ 1ST

2ND 3RD 4TH 5TH

6TH

7TH

8TH

9TH 10TH 11TH

Figure 2. Differential Gain/Differential Phase

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.

© Analog Devices, Inc., 1995 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703


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