AD8056AR Analog Devices, AD8056AR Datasheet
AD8056AR
Manufacturer Part Number
AD8056AR
Description
Manufacturer
Analog Devices
Specifications of AD8056AR
Case
SOP8
Dc
99+
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FEATURES
Low cost single (AD8055) and dual (AD8056)
Easy-to-use voltage feedback architecture
High speed
Small packaging
Excellent video specifications (R
Low power, ±5 V supplies 5 mA typ/amplifier power
High output drive current: over 60 mA
APPLICATIONS
Imaging
Photodiode preamps
Video line drivers
Differential line drivers
Professional cameras
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).
Rev. J
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. Specifications subject to change without notice. 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 owners.
300 MHz, −3 dB bandwidth (G = +1)
1400 V/μs slew rate
20 ns settling to 0.1%
Low distortion: −72 dBc @ 10 MHz
Low noise: 6 nV/√Hz
Low dc errors: 5 mV max V
Gain flatness 0.1 dB to 40 MHz
0.01% differential gain error
0.02° differential phase error
Drives 4 video loads (37.5 V) with 0.02% differential
Gain and 0.1° differential phase
supply current
AD8055 available in 5-lead SOT-23
AD8056 available in 8-lead MSOP
OS
, 1.2 μA max I
L
= 150 Ω, G = +2)
B
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
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.
–V
–IN
+IN
NC
S
Voltage Feedback Amplifiers
1
2
3
4
–1
–2
–3
–4
–5
0.3M
5
4
3
2
1
0
Figure 1. N-8 and R-8
NC = NO CONNECT
V
AD8055
IN
50Ω
1M
CONNECTION DIAGRAMS
OUT1
–IN1
+IN1
–V
R
R
G
S
C
Figure 4. Frequency Response
Figure 3. N-8, R-8, and RM-8
G = +10
R
1
2
3
4
F
R
= 909Ω
©2006 Analog Devices, Inc. All rights reserved.
F
Low Cost, 300 MHz
G = +5
R
8
7
6
5
AD8056
F
FREQUENCY (Hz)
= 1000Ω
V
10M
NC
+V
V
NC
OUT
AD8055/AD8056
OUT
R
S
L
G = +1
R
R
F
C
V
= 0Ω
= 100Ω
OUT
–V
+IN
S
8
7
6
5
V
R
100M
OUT
L
1
2
3
+V
OUT
–IN2
+IN2
= 100Ω
Figure 2. RJ-5
S
= 100mV p-p
AD8055
G = +2
R
www.analog.com
F
= 402Ω
1G
5
4
+V
–IN
S
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