a
PRODUCT DESCRIPTION
The AD8002 is a dual, low-power, high-speed amplifier designed
to operate on ±5 V supplies. The AD8002 features unique transimpedance linearization circuitry. This allows it to drive video
loads with excellent differential gain and phase performance on
only 50 mW of power per amplifier. The AD8002 is a current
feedback amplifier and features gain flatness of 0.1 dB to 60 MHz
while offering differential gain and phase error of 0.01% and
0.02°. This makes the AD8002 ideal for professional video
electronics such as cameras and video switchers. Additionally,
the AD8002’s low distortion and fast settling make it ideal for
buffer high-speed A-to-D converters.
The AD8002 offers low power of 5.5 mA/amplifier max (VS =
± 5 V) and can run on a single 12 V power supply, while capable
of delivering over 70 mA of load current. It is offered in an
8-lead plastic DIP, SOIC, and µSOIC package. These features
make this amplifier ideal for portable and battery-powered
applications where size and power are critical.
OUT1 1
8 V+
–IN1 2
7 OUT2
+IN1 3
6 –IN2
V– 4
5 +IN2
AD8002
The outstanding bandwidth of 600 MHz along with 1200 V/µs
of slew rate make the AD8002 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 AD8002 is
available in the industrial temperature range of –40°C to +85°C.
1
SIDE 1
G = +2
RL = 100⍀
VIN = 50mV
SIDE 2
0
–1
–2
–3
0.1
0
SIDE 1
–4
–5
–0.1
SIDE 2
–0.2
–6
–0.3
–7
–0.4
–8
–0.5
1M
NORMALIZED FREQUENCY RESPONSE – dB
APPLICATIONS
A-to-D Driver
Video Line Driver
Differential Line Driver
Professional Cameras
Video Switchers
Special Effects
RF Receivers
FUNCTIONAL BLOCK DIAGRAM
8-Lead Plastic DIP, SOIC, and SOIC
NORMALIZED FLATNESS – dB
FEATURES
Excellent Video Specifications (RL = 150 ⍀, G = +2)
Gain Flatness 0.1 dB to 60 MHz
0.01% Differential Gain Error
0.02؇ Differential Phase Error
Low Power
5.5 mA/Amp Max Power Supply Current (55 mW)
High Speed and Fast Settling
600 MHz, –3 dB Bandwidth (G = +1)
500 MHz, –3 dB Bandwidth (G = +2)
1200 V/s Slew Rate
16 ns Settling Time to 0.1%
Low Distortion
–65 dBc THD, f C = 5 MHz
33 dBm Third Order Intercept, F1 = 10 MHz
–66 dB SFDR, f = 5 MHz
–60 dB Crosstalk, f = 5 MHz
High Output Drive
Over 70 mA Output Current
Drives Up to Eight Back-Terminated 75 ⍀ Loads
(Four Loads/Side) While Maintaining Good
Differential Gain/Phase Performance (0.01%/0.17؇)
Available in 8-Lead Plastic DIP, SOIC and SOIC Packages
Dual 600 MHz, 50 mW
Current Feedback Amplifier
AD8002
–9
1G
10M
100M
FREQUENCY – Hz
Figure 1. Frequency Response and Flatness, G = +2
SIDE 1
G = +2
1V STEP
SIDE 2
200mV
5ns
Figure 2. 1 V Step Response, G = +1
REV. D
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
