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AD8139ACP-EBZ

更新时间： 2024-11-03 01:21:43
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亚德诺 - ADI /
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27页 613K
描述
Low Noise, Rail-to-Rail, Differential ADC Driver

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AD8139ACP-EBZ 数据手册

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Low Noise, Rail-to-Rail,  
Differential ADC Driver  
AD8139  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
AD8139  
Fully differential  
Low noise  
2.25 nV/√Hz  
2.1 pA/√Hz  
–IN  
1
2
3
4
8
7
6
5
+IN  
V
NIC  
V–  
OCM  
V+  
+OUT  
–OUT  
Low harmonic distortion  
98 dBc SFDR at 1 MHz  
85 dBc SFDR at 5 MHz  
72 dBc SFDR at 20 MHz  
High speed  
NIC = NO INTERNAL CONNECTION.  
Figure 1. 8-Lead SOIC  
AD8139  
TOP VIEW  
(Not to Scale)  
410 MHz, 3 dB BW (G = 1)  
800 V/µs slew rate  
45 ns settling time to 0.01%  
69 dB output balance at 1 MHz  
80 dB dc CMRR  
+IN  
–IN  
1
2
3
4
8
7
6
5
V
NIC  
V–  
OCM  
V+  
–OUT  
+OUT  
NIC = NO INTERNAL CONNECTION.  
Low offset: 0.5 mV maximum  
Low input offset current: 0.5 µA maximum  
Differential input and output  
Differential-to-differential or single-ended-to-differential  
operation  
Figure 2. 8-Lead LFCSP  
Rail-to-rail output  
Adjustable output common-mode voltage  
Wide supply voltage range: 5 V to 12 V  
Available in a small SOIC package and an 8-lead LFCSP  
The AD8139 is manufactured on the proprietary Analog Devices,  
Inc., second-generation XFCB process, enabling it to achieve low  
levels of distortion with input voltage noise of only 2.25 nV/√Hz.  
APPLICATIONS  
ADC drivers to 18 bits  
Single-ended-to-differential converters  
Differential filters  
Level shifters  
Differential PCB drivers  
Differential cable drivers  
The AD8139 is available in an 8-lead SOIC package with an  
exposed paddle (EP) on the underside of its body and a 3 mm ×  
3 mm LFCSP. It is rated to operate over the temperature range  
of −40°C to +125°C.  
100  
GENERAL DESCRIPTION  
The AD8139 is an ultralow noise, high performance differential  
amplifier with rail-to-rail output. With its low noise, high  
SFDR, and wide bandwidth, it is an ideal choice for driving  
analog-to-digital converters (ADCs) with resolutions to 18 bits.  
The AD8139 is easy to apply, and its internal common-mode  
feedback architecture allows its output common-mode voltage  
to be controlled by the voltage applied to one pin. The internal  
feedback loop also provides outstanding output balance as well  
as suppression of even-order harmonic distortion products. Fully  
differential and single-ended-to-differential gain configurations  
are easily realized by the AD8139. Simple external feedback  
networks consisting of four resistors determine the closed-loop  
gain of the amplifier.  
10  
1
10  
100  
1k  
10k  
100k  
1M  
10M  
100M  
1G  
FREQUENCY (Hz)  
Figure 3. Input Voltage Noise vs. Frequency  
Rev. C  
Document Feedback  
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 ©2004–2016 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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