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AD8027ARZ-REEL PDF预览

AD8027ARZ-REEL

更新时间: 2024-10-28 04:30:51
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亚德诺 - ADI 放大器
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24页 624K
描述
Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers

AD8027ARZ-REEL 数据手册

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Low Distortion, High Speed  
Rail-to-Rail Input/Output Amplifiers  
AD8027/AD8028  
CONNECTION DIAGRAMS  
FEATURES  
High speed  
190 MHz, –3 dB bandwidth (G = +1)  
100 V/μs slew rate  
Low distortion  
120 dBc @ 1 MHz SFDR  
80 dBc @ 5 MHz SFDR  
AD8027  
SOIC-8  
(R)  
AD8027  
SOT-23-6  
(RT)  
NC  
–IN  
+IN  
1
2
3
4
8
7
6
5
V
1
2
6
5
4
+V  
S
DISABLE/SELECT  
OUT  
+V  
V
S
–V  
S
DISABLE/SELECT  
–IN  
OUT  
+
–V  
NC  
S
+IN  
3
NC = NO CONNECT  
Selectable input crossover threshold  
Low noise  
AD8028  
SOIC-8  
(R)  
AD8028  
MSOP-10  
(RM)  
V
1
2
3
4
8
7
6
5
V
1
2
3
4
5
10  
9
+V  
V
+V  
V
4.3 nV/√Hz  
1.6 pA/√Hz  
OUTA  
OUTA  
S
S
+
–IN A  
+IN A  
–IN A  
+
OUTB  
–IN B  
OUTB  
–IN B  
+
+IN A  
8
Low offset voltage: 900 μV max  
Low power: 6.5 mA/amplifier supply current  
Power-down mode  
No phase reversal: VIN > |VS| + 200 mV  
Wide supply range: 2.7 V to 12 V  
Small packaging: SOIC-8, SOT-23-6, MSOP-10  
+
–V  
+IN B  
–V  
7
+IN B  
S
S
6
DISABLE/SELECT A  
DISABLE/SELECT B  
03327-B-001  
Figure 1. Connection Diagrams (Top View)  
With their wide supply voltage range (2.7 V to 12 V) and wide  
bandwidth (190 MHz), the AD8027/AD8028 amplifiers are  
designed to work in a variety of applications where speed and  
performance are needed on low supply voltages. The high per-  
formance of the AD8027/AD8028 is achieved with a quiescent  
current of only 6.5 mA/amplifier typical. The AD8027/AD8028  
have a shutdown mode that is controlled via the SELECT pin.  
APPLICATIONS  
Filters  
ADC drivers  
Level shifting  
Buffering  
Professional video  
Low voltage instrumentation  
The AD8027/AD8028 are available in SOIC-8, MSOP-10, and  
SOT-23-6 packages. They are rated to work over the industrial  
temperature range of –40°C to +125°C.  
GENERAL DESCRIPTION  
The AD8027/AD80281 are high speed amplifiers with rail-to-  
rail input and output that operate on low supply voltages and  
are optimized for high performance and wide dynamic signal  
range. The AD8027/AD8028 have low noise (4.3 nV/√Hz,  
1.6 pA/√Hz) and low distortion (120 dBc at 1 MHz). In appli-  
cations that use a fraction of, or the entire input dynamic range  
and require low distortion, the AD8027/AD8028 are ideal  
choices.  
–20  
G = +1  
FREQUENCY = 100kHz  
R
= 1kΩ  
L
–40  
–60  
V
= +5V  
S
V
= +3V  
S
V
= ±5V  
S
–80  
–100  
–120  
–140  
Many rail-to-rail input amplifiers have an input stage that  
switches from one differential pair to another as the input signal  
crosses a threshold voltage, which causes distortion. The  
AD8027/AD8028 have a unique feature that allows the user to  
select the input crossover threshold voltage through the  
SELECT pin. This feature controls the voltage at which the  
complementary transistor input pairs switch. The AD8027/  
AD8028 also have intrinsically low crossover distortion.  
0
1
2
3
4
5
6
7
8
9
10  
OUTPUT VOLTAGE (V p-p)  
03327-A-063  
Figure 2. SFDR vs. Output Amplitude  
1Protected by U.S. patent numbers 6,486,737B1; 6,518,842B1  
Rev. C  
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  

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