REV. D
a
AD8001
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800 MHz, 50 mW
Current Feedback Amplifier
FEATURES
Excellent Video Specifications (R
L
= 150 , G = +2)
Gain Flatness 0.1 dB to 100 MHz
0.01% Differential Gain Error
0.025 Differential Phase Error
Low Power
5.5 mA Max Power Supply Current (55 mW)
High Speed and Fast Settling
880 MHz, –3 dB Bandwidth (G = +1)
440 MHz, –3 dB Bandwidth (G = +2)
1200 V/s Slew Rate
10 ns Settling Time to 0.1%
Low Distortion
–65 dBc THD, f
C
= 5 MHz
33 dBm Third Order Intercept, F
1
= 10 MHz
–66 dB SFDR, f = 5 MHz
High Output Drive
70 mA Output Current
Drives Up to 4 Back-Terminated Loads (75 Each)
While Maintaining Good Differential Gain/Phase
Performance (0.05%/0.25)
APPLICATIONS
A-to-D Drivers
Video Line Drivers
Professional Cameras
Video Switchers
Special Effects
RF Receivers
1
2
3
4
8
7
6
5
AD8001
NC
NC
–IN
NC
+IN
NC = NO CONNECT
OUT
V–
V+
1
V
OUT
AD8001
–V
S
+IN
2
34
5
+V
S
–IN
GENERAL DESCRIPTION
The AD8001 is a low power, high speed amplifier designed
to operate on ±5V supplies. The AD8001 features unique
GAIN – dB
9
6
–12
10M 100M 1G
3
0
–3
–6
–9
FREQUENCY – Hz
V
S
= 5V
R
FB
= 820
V
S
= 5V
R
FB
= 1k
G = +2
R
L
= 100
Figure 1. Frequency Response of AD8001
transimpedance linearization circuitry. This allows it to drive
video loads with excellent differential gain and phase perfor-
mance on only 50 mW of power. The AD8001 is a current
feedback amplifier and features gain flatness of 0.1 dB to 100 MHz
while offering differential gain and phase error of 0.01% and
0.025°. This makes the AD8001 ideal for professional video
electronics such as cameras and video switchers. Additionally,
the AD8001’s low distortion and fast settling make it ideal for
buffer high speed A-to-D converters.
The AD8001 offers low power of 5.5 mA max (V
S
= ±5 V) and
can run on a single +12 V power supply, while being capable of
delivering over 70 mA of load current. These features make this
amplifier ideal for portable and battery-powered applications
where size and power are critical.
The outstanding bandwidth of 800 MHz along with 1200 V/µs
of slew rate make the AD8001 useful in many general-purpose
high speed applications where dual power supplies of up to ±6 V
and single supplies from 6 V to 12 V are needed. The AD8001 is
available in the industrial temperature range of –40°C to +85°C.
Figure 2. Transient Response of AD8001; 2 V Step, G = +2
8-Lead PDIP (N-8),
CERDIP (Q-8) and SOIC (R-8)
5-Lead SOT-23-5
(RT-5)
FUNCTIONAL BLOCK DIAGRAMS
