OPA4872-EP Datasheet, PDF (1/24 Pages) Texas Instruments – 4:1 HIGH-SPEED MULTIPLEXER

OPA4872
OPA4872-EP
www.ti.com........................................................................................................................................................................................... SBOS444 – DECEMBER 2008
4:1 HIGH-SPEED MULTIPLEXER
FEATURES
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•2 500-MHz Small-Signal Bandwidth
• 500-MHz, 2-V_PP Bandwidth
• 0.1-dB Gain Flatness to 120 MHz
• 10-ns Channel-Switching Time
• Low Switching Glitch: 40 mV_PP
• 2300-V/µs Slew Rate
• 0.035%/0.005° Differential Gain, Phase
• Quiescent Current = 10.6 mA
• 1.1-mA Quiescent Current in Shutdown Mode
• 88-dB Off Isolation in Disable or Shutdown
(10 MHz)
APPLICATIONS
• Video Router
• LCD and Plasma Display
• High Speed PGA
• Drop-In Upgrade to AD8174
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Military (–55°C/125°C),
Temperature Range⁽¹⁾
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
(1) Additional temperature ranges available - contact factory
DESCRIPTION
The OPA4872 offers a very wideband 4:1 multiplexer in an SO-14 package. Using only 10.6 mA, the OPA4872
provides a user-settable output amplifier gain with greater than 500-MHz large-signal bandwidth (2 V_PP). The
switching glitch is improved over earlier solutions using a new (patented) input stage switching approach. This
technique uses current steering as the input switch while maintaining an overall closed-loop design. The
OPA4872 exhibits an off isolation of 88dB in either Disable or Shutdown mode. With greater than 500-MHz
small-signal bandwidth at a gain of 2, the OPA4872 gives a typical 0.1-dB gain flatness to greater than 120 MHz.
System power may be optimized using the chip-enable feature for the OPA4872. Taking the chip enable (EN)
line high powers down the OPA4872 to less than 3.4 mA total supply current. Further power reduction to 1.1mA
quiescent current can be achieved by bringing the shutdown (SD) line high. Muxing multiple OPA4872s outputs
together, then using the chip enable to select which channels are active, increases the number of possible
inputs.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated