a
Quad 3000 V/s, 35 mW
Current Feedback Amplifier
AD8004
GENERAL 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/ms
making the AD8004 ideal for handling large amplitude pulses.
Additionally, the AD8004 provides gain flatness of 0.1 dB to
OUTPUT 1
–IN 2
+VS 4
0.1
–1
؎5VS
–2
+5VS
–3
0
–4
–0.1
+5VS
–5
؎5VS
–0.2
–6
–0.3
–7
–0.4
–8
–0.5
1
10
40
FREQUENCY – MHz
100
NORMALIZED FREQUENCY RESPONSE – dB
NORMALIZED FLATNESS – dB
G = +2
VIN = 50mV rms
RL = 100⍀
RF = 1.10k⍀
R PACKAGE
–9
500
Figure 1. Frequency Response and Flatness, G = +2
4
–IN 6
13 –IN
12 +IN
AD8004
(TOP VIEW)
+IN 5
11 –VS
10 +IN
2
3
9 –IN
8 OUTPUT
OUTPUT 7
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 DIP or 14-lead SOIC package. These features
make this amplifier ideal for portable and battery powered applications where size and power are critical.
The outstanding bandwidth of 250 MHz along with 3000 V/ms
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
in the N and R packages, and in the military temperature range
of –55∞C to +125∞C in the Q package.
0.04
0.03
0.02
0.01
0.00
–0.01
–0.02
–0.03
–0.04
0.12
0.10
0.08
0.06
0.04
0.02
0.00
–0.02
–0.04
1
0
14 OUTPUT
1
+IN 3
DIFF GAIN – %
APPLICATIONS
Image Scanners
Active Filters
Video Switchers
Special Effects
CONNECTION DIAGRAM
PDIP (N), CERDIP (Q), and
SOIC (R) Packages
DIFF PHASE – Degrees
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-Lead PDIP, SOIC, and CERDIP
80 IRE
RL = 150⍀
VS = ؎5V
RF = 1.21k⍀
1ST
2ND 3RD 4TH
5TH
6TH
7TH
8TH
9TH 10TH 11TH
80 IRE
RL = 150⍀
VS = ؎5V
RF = 1.21k⍀
1ST
2ND 3RD 4TH
5TH
6TH
7TH
8TH
9TH 10TH 11TH
Figure 2. Differential Gain/Differential Phase
REV. C
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2003 Analog Devices, Inc. All rights reserved.
