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AD8055 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD8055
Description  Low Cost, 300 MHz Voltage Feedback Amplifiers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

AD8055 Datasheet(HTML) 1 Page - Analog Devices

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Low Cost, 300 MHz
Voltage Feedback Amplifiers
AD8055/AD8056
Rev. J
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
FEATURES
CONNECTION DIAGRAMS
NC
1
–IN
2
+IN
3
–VS
4
NC
8
+VS
7
VOUT
6
NC
5
NC = NO CONNECT
AD8055
Low cost single (AD8055) and dual (AD8056)
VOUT 1
+IN
3
–VS 2
+VS
5
–IN
4
AD8055
Easy-to-use voltage feedback architecture
High speed
300 MHz, −3 dB bandwidth (G = +1)
1400 V/μs slew rate
20 ns settling to 0.1%
Low distortion: −72 dBc @ 10 MHz
Figure 1. N-8 and R-8
Figure 2. RJ-5
Low noise: 6 nV/√Hz
OUT1
1
–IN1
2
+IN1
3
–VS
4
+VS
8
OUT
7
–IN2
6
+IN2
5
AD8056
, 1.2 μA max I
Low dc errors: 5 mV max VOS
B
Small packaging
AD8055 available in 5-lead SOT-23
AD8056 available in 8-lead MSOP
Excellent video specifications (RL = 150 Ω, G = +2)
Figure 3. N-8, R-8, and RM-8
Gain flatness 0.1 dB to 40 MHz
0.01% differential gain error
Their 0.1 dB flatness out to 40 MHz, wide bandwidth out to
300 MHz, along with 1400 V/μs slew rate and 20 ns settling
time, make them useful for a variety of high speed applications.
0.02° differential phase error
Drives 4 video loads (37.5 V) with 0.02% differential
Gain and 0.1° differential phase
The AD8055 and AD8056 require only 5 mA typ/amplifier of
supply current and operate on a dual ±5 V or a single +12 V
power supply, while capable of delivering over 60 mA of load
current. The AD8055 is available in a small 8-lead PDIP, an 8-lead
SOIC, and a 5-lead SOT-23, while the AD8056 is available in an
8-lead MSOP. These features make the AD8055/AD8056 ideal
for portable and battery-powered applications where size and
power are critical. These amplifiers in the R-8, N-8, and RM-8
packages are available in the extended temperature range of
−40°C to +125°C.
Low power, ±5 V supplies 5 mA typ/amplifier power
supply current
High output drive current: over 60 mA
APPLICATIONS
Imaging
Photodiode preamps
Video line drivers
Differential line drivers
Professional cameras
FREQUENCY (Hz)
5
4
–5
3
2
1
0
–1
–2
–3
–4
VIN
RC
50Ω
RG
RF
RL
VOUT
VOUT = 100mV p-p
RL = 100Ω
G= +2
RF =402Ω
G= +1
RF =0Ω
RC =100Ω
G= +10
RF =909Ω
G= +5
RF = 1000Ω
1G
100M
10M
1M
0.3M
Video switchers
Special effects
A-to-D drivers
Active filters
GENERAL DESCRIPTION
The AD8055 (single) and AD8056 (dual) voltage feedback
amplifiers offer bandwidth and slew rate typically found in
current feedback amplifiers. Additionally, these amplifiers are
easy to use and available at a very low cost.
Despite their low cost, the AD8055 and AD8056 provide
excellent overall performance. For video applications, their
differential gain and phase error are 0.01% and 0.02° into a
150 Ω load and 0.02% and 0.1° while driving four video loads
(37.50 Ω).
Figure 4. Frequency Response


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