REV. B
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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
AD8004
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
Quad 3000 V/ms, 35 mW
Current Feedback Amplifier
FEATURES
High Speed
250 MHz –3 dB Bandwidth (G = +1)
3000 V/ms 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 (R
L
= 150 V, G = +2)
Gain Flatness 0.1 dB to 30 MHz
0.04% Differential Gain Error
0.108 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-Lead Plastic DIP and SOIC
APPLICATIONS
Image Scanners
Active Filters
Video Switchers
Special Effects
PRODUCT DESCRIPTION
The AD8004 is a quad, low power, high speed amplifier designed
to operate on single or dual supplies. It utilizes a current feed-
back architecture and features high slew rate of 3000 V/m s
making the AD8004 ideal for handling large amplitude pulses.
Additionally, the AD8004 provides gain flatness of 0.1 dB to
FREQUENCY – MHz
+1
–4
–9
1 50010 40 100
–3
–2
–1
0
–5
–6
–7
–8
NORMALIZED FREQUENCY RESPONSE – dB
NORMALIZED FLATNESS – dB
+0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
65V
S
+5V
S
+5V
S
65V
S
G = +2
V
IN
= 50mV rms
R
L
= 100V
R
F
= 1.10kV
R PACKAGE
Figure 1. Frequency Response and Flatness, G = +2
CONNECTION DIAGRAM
Plastic DIP (N) and
SOIC (R) Packages
14
13
12
11
10
9
8
1
2
3
4
7
6
5
1
23
4
AD8004
(TOP VIEW)
OUTPUT
–IN
+IN
+V
S
+IN
–IN
OUTPUT
–V
S
+IN
–IN
OUTPUT
OUTPUT
–IN
+IN
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 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-lead plastic DIP or 14-lead SOIC package. These
features make this amplifier ideal for portable and battery pow-
ered applications where size and power are critical.
The outstanding bandwidth of 250 MHz along with 3000 V/m s
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.
0.04
0.03
0.02
0.01
0.00
–0.01
–0.02
–0.03
–0.04
1ST
DIFF GAIN – %
0.12
0.10
0.08
0.06
0.04
0.02
0.00
–0.02
–0.04DIFF PHASE – Degrees
2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 10TH 11TH
80 IRE
R
L
= 150V
V
S
= 65V
R
F
= 1.21kV
80 IRE
R
L
= 150V
V
S
= 65V
R
F
= 1.21kV
Figure 2. Differential Gain/Differential Phase