REV. D
a
AD8004
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.S.A.
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Quad 3000 V/s, 35 mW
Current Feedback Amplifier
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 (R
L
= 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 SOIC
APPLICATIONS
Image Scanners
Active Filters
Video Switchers
Special Effects
GENERAL 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/ms
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
5V
S
+5V
S
+5V
S
5V
S
G = +2
V
IN
= 50mV rms
R
L
= 100
R
F
= 1.10k
R PACKAGE
Figure 1. Frequency Response and Flatness, G = +2
CONNECTION DIAGRAM
SOIC (R) Package
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 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 ±6V
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 R package.
0.04
0.03
0.02
0.01
0.00
–0.01
–0.02
–0.03
–0.04
1
ST
DIFF GAIN – %
0.12
0.10
0.08
0.06
0.04
0.02
0.00
–0.02
–0.04
DIFF 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
= 150
V
S
= 5V
R
F
= 1.21k
80 IRE
R
L
= 150
V
S
= 5V
R
F
= 1.21k
Figure 2. Differential Gain/Differential Phase
