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AD8139ARDZ Scheda tecnica(PDF) 1 Page - Analog Devices

Il numero della parte AD8139ARDZ
Spiegazioni elettronici  Low Noise, Rail-to-Rail, Differential ADC Driver
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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AD8139ARDZ Scheda tecnica(HTML) 1 Page - Analog Devices

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Low Noise, Rail-to-Rail,
Differential ADC Driver
Data Sheet
AD8139
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
©2004–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Fully differential
Low noise
2.25 nV/√Hz
2.1 pA/√Hz
Low harmonic distortion
98 dBc SFDR at 1 MHz
85 dBc SFDR at 5 MHz
72 dBc SFDR at 20 MHz
High speed
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
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
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
APPLICATIONS
ADC drivers to 18 bits
Single-ended-to-differential converters
Differential filters
Level shifters
Differential PCB drivers
Differential cable drivers
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.
FUNCTIONAL BLOCK DIAGRAMS
–IN
VOCM
V+
+OUT
+IN
NIC
V–
–OUT
NIC = NO INTERNAL CONNECTION.
1
2
3
4
8
7
6
5
AD8139
Figure 1. 8-Lead SOIC
–IN
VOCM
V+
+OUT
NIC
+IN
V–
–OUT
NIC = NO INTERNAL CONNECTION.
3
4
1
2
6
5
8
7
AD8139
TOP VIEW
(Not to Scale)
Figure 2. 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.
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.
1
10
100
1k
10k
100k
1M
10M
1G
100M
10
100
FREQUENCY (Hz)
Figure 3. Input Voltage Noise vs. Frequency


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