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AD8132_06 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD8132_06
Description  Low Cost, High Speed Differential Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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Low Cost, High Speed
Differential Amplifier
AD8132
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
FEATURES
High speed
350 MHz, −3 dB bandwidth
1200 V/μs slew rate
Resistor set gain
Internal common-mode feedback
Improved gain and phase balance
−68 dB @ 10 MHz
Separate input to set the common-mode output voltage
Low distortion: −99 dBc SFDR @ 5 MHz, 800 Ω load
Low power: 10.7 mA @ 5 V
Power supply range: +2.7 V to ±5.5 V
APPLICATIONS
Low power differential ADC drivers
Differential gain and differential filtering
Video line drivers
Differential in/out level shifting
Single-ended input to differential output drivers
Active transformers
GENERAL DESCRIPTION
The AD8132 is a low cost differential or single-ended input to
differential output amplifier with resistor set gain. The AD8132
is a major advancement over op amps for driving differential input
ADCs or for driving signals over long lines. The AD8132 has a
unique internal feedback feature that provides output gain and
phase matching balanced to −68 dB at 10 MHz, suppressing
harmonics and reducing radiated EMI.
Manufactured using the next generation of Analog Devices, Inc.’s
XFCB bipolar process, the AD8132 has a −3 dB bandwidth of
350 MHz and delivers a differential signal with −99 dBc SFDR
at 5 MHz, despite its low cost. The AD8132 eliminates the need for
a transformer with high performance ADCs, preserving the low
frequency and dc information. The common-mode level
of the differential output is adjustable by applying a voltage on
the VOCM pin, easily level shifting the input signals for driving
single-supply ADCs. Fast overload recovery preserves sampling
accuracy.
PIN CONFIGURATION
–IN 1
VOCM 2
V+ 3
+OUT 4
+IN
8
NC
7
V–
6
–OUT
5
NC = NO CONNECT
AD8132
Figure 1.
The AD8132 is also used as a differential driver for the trans-
mission of high speed signals over low cost twisted pair or coaxial
cables. The feedback network can be adjusted to boost the high
frequency components of the signal. The AD8132 is used for either
analog or digital video signals or for other high speed data trans-
mission. The AD8132 is capable of driving either a Category 3
or Category 5 twisted pair or coaxial cable with minimal line
attenuation. The AD8132 has considerable cost and performance
improvements over discrete line driver solutions.
Differential signal processing reduces the effects of ground noise
that plagues ground-referenced systems. The AD8132 can be
used for differential signal processing (gain and filtering) through-
out a signal chain, easily simplifying the conversion between
differential and single-ended components.
The AD8132 is available in both SOIC_N and MSOP packages
for operation over the extended industrial temperature range of
−40°C to +125°C.
FREQUENCY (MHz)
6
1
3
0
–3
–6
–9
–12
10
100
1k
VS = ±5V
G = +1
VO, dm = 2V p-p
RL, dm = 499Ω
Figure 2. Large Signal Frequency Response




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