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., 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.
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) throughout a signal chain, easily simplifying the conversion between differential and single-ended components.The AD8132W is the automotive grade version, qualified for 125°C operation per the AEC-Q100. See the Automotive Products section for more details.
The AD8132 is available in both 8-lead SOIC and 8-lead MSOP packages for operation over the extended industrial temperature range of −40°C to +125°C.Applications
Analog Devices introduces the next generation of Differential Amplifiers, these new amplifiers offer higher performance and lower power consumption than previous devices. Also new in this category, is each of these devices are offered as dual amplifiers, which simplifies designs and reduces board area.
|Title||Content Type||File Type|
|AD8132: Low-Cost, High Speed Differential Amplifier Data Sheet (Rev I, 09/2009) (pdf, 441 kB)||Data Sheets|
|AN-1026: High Speed Differential ADC Driver Design Considerations (pdf, 355 kB)||Application Notes|
|AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (pdf, 181 kB)||Application Notes|
|AN-0992: Active Filter Evaluation Board for Differential Amplifiers (pdf, 85 kB)||Application Notes|
|AN-649: Using the Analog Devices Active Filter Design Tool (pdf, 5301 kB)||Application Notes|
AN-584: Using the AD813X Differential Amplifier
(pdf, 174 kB)
The AD813x differs from conventional op amps by the external presence of an additional input and output. The additional input, VOGM, controls the output common mode voltage.
|MT-218: Multiple Feedback Band-Pass Design Example (pdf, 0)||Tutorials|
|MT-076: Differential Driver Analysis (pdf, 95 kB)||Tutorials|
|MT-075: Differential Drivers for High Speed ADCs Overview (pdf, 183 kB)||Tutorials|
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
|UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC Packages (PDF, 263 kB)||User Guides|
|UG-130: Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages (pdf, 493 kB)||User Guides|
"Rules of the Road" for High-Speed Differential ADC Drivers
(Analog Dialogue, Vol. 43, No. 5, 2009)
|Amplifiers for Video Distribution (pdf, 115 kB)||Product Selection Guide|
|High Speed Amplifiers Selection Table (pdf, 77 kB)||Product Selection Guide|
|Video Amplifier Products (April 2007) (pdf, 4117 kB)||Overview|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
ADI's new ADI DiffAmpCalc is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
|ADIsim Design/Simulation Tools||HTML|
|AD8132 SPICE Macro-Model||SPICE Models||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.