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AD8056ARM

更新时间： 2024-11-08 22:53:31
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亚德诺 - ADI 放大器
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11页 208K
描述
Low Cost, 300 MHz Voltage Feedback Amplifiers

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AD8056ARM 数据手册

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Low Cost, 300 MHz  
Voltage Feedback Amplifiers  
a
AD8055/AD8056  
FUNCTIONAL BLOCK DIAGRAMS  
FEATURES  
Low Cost Single (AD8055) and Dual (AD8056)  
Easy to Use Voltage Feedback Architecture  
High Speed  
300 MHz, –3 dB Bandwidth (G = +1)  
1400 V/␮s Slew Rate  
20 ns Settling to 0.1%  
Low Distortion: –72 dBc @ 10 MHz  
Low Noise: 6 nV/√Hz  
N-8 and SO-8  
SOT-23-5 (RT)  
AD8055  
AD8055  
1
2
3
4
NC  
+V  
+V  
S
8
7
6
5
V
1
2
5
4
NC  
–IN  
+IN  
OUT  
S
–V  
S
V
OUT  
NC  
–V  
3
–IN  
+IN  
S
(Not to Scale)  
(Not to Scale)  
NC = NO CONNECT  
Low DC Errors: 5 mV Max VOS, 1.2 ␮A Max IB  
Small Packaging  
N-8, SO-8, microSOIC (RM)  
AD8055 Available in SOT-23-5  
AD8056 Available in 8-Lead microSOIC  
Excellent Video Specifications (RL = 150 ⍀, G = +2)  
Gain Flatness 0.1 dB to 40 MHz  
0.01% Differential Gain Error  
AD8056  
1
2
3
4
+V  
S
OUT1  
–IN1  
+IN1  
8
7
6
5
OUT  
–IN2  
+IN2  
–V  
S
0.02؇ Differential Phase Error  
(Not to Scale)  
Drives Four Video Loads (37.5 ⍀) with 0.02% and  
0.1؇ Differential Gain and Differential Phase  
Low Power, ؎5 V Supplies  
5 mA Typ/Amplifier Power Supply Current  
High Output Drive Current: Over 60 mA  
The AD8055 and AD8056 require only 5 mA typ/amplifier of  
supply current and operate on dual 5 V or single +12 V power  
supply, while being capable of delivering over 60 mA of load  
current. All this is offered in a small 8-lead plastic DIP, 8-lead  
SOIC packages, 5-lead SOT-23-5 package (AD8055) and an  
8-lead microSOIC package (AD8056). These features make  
the AD8055/AD8056 ideal for portable and battery powered  
applications where size and power are critical. These amplifiers are  
available in the industrial temperature range of –40°C to +85°C.  
APPLICATIONS  
Imaging  
Photodiode Preamp  
Video Line Driver  
Differential Line Driver  
Professional Cameras  
Video Switchers  
Special Effects  
5
V
R
= 100mV p-p  
= 100⍀  
R
C
OUT  
4
3
V
IN  
V
A-to-D Driver  
Active Filters  
OUT  
L
50⍀  
G = +1  
R
L
R
R
= 0⍀  
= 100⍀  
F
R
F
2
R
S
C
G = +2  
= 402⍀  
1
R
PRODUCT DESCRIPTION  
F
0
The AD8055 (single) and AD8056 (dual) voltage feedback  
amplifiers offer bandwidth and slew rate typically found in cur-  
rent feedback amplifiers. Additionally, these amplifiers are easy  
to use and available at a very low cost.  
–1  
–2  
–3  
–4  
G = +10  
R
= 909⍀  
F
Despite their low cost, the AD8055 and AD8056 provide excel-  
lent overall performance. For video applications, their differen-  
tial 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 (37.5 Ω).  
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.  
G = +5  
R
= 1000⍀  
F
–5  
0.3M  
1M  
10M  
100M  
1G  
FREQUENCY – Hz  
Figure 1. Frequency Response  
REV. B  
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  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 2000  
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