OPA4872 4:1 High Speed Multiplexer | TI.com

OPA4872
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4:1 High Speed Multiplexer

4:1 High Speed Multiplexer - OPA4872
Datasheet
 

Description

The OPA4872 offers a very wideband 4:1 multiplexer in an SO-14 package. Using only 10.6mA, the OPA4872 provides a user-settable output amplifier gain with greater than 500MHz large-signal bandwidth (2VPP). 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 500MHz small-signal bandwidth at a gain of 2, the OPA4872 gives a typical 0.1dB gain flatness to greater than 120MHz.

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 3.4mA 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.

Features

  • 500MHz SMALL-SIGNAL BANDWIDTH
  • 500MHz, 2VPP BANDWIDTH
  • 0.1dB GAIN FLATNESS to 120MHz
  • 10ns CHANNEL SWITCHING TIME
  • LOW SWITCHING GLITCH: 40mVPP
  • 2300V/µs SLEW RATE
  • 0.035%/0.005° DIFFERENTIAL GAIN, PHASE
  • QUIESCENT CURRENT = 10.6mA
  • 1.1mA QUIESCENT CURRENT IN SHUTDOWN MODE
  • 88dB OFF ISOLATION IN DISABLE OR SHUTDOWN (10MHz)
  • APPLICATIONS
    • VIDEO ROUTER
    • LCD AND PLASMA DISPLAY
    • HIGH SPEED PGA
    • DROP-IN UPGRADE TO AD8174

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    Parametrics

    Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
    Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) GBW (Typ) (MHz) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
    OPA4872 Order now Current FB     4     -5     5     500     1100     1     2300     4.5     7     10.6     1     No     Catalog     -40 to 85     SOIC | 14     14SOIC: 52 mm2: 6 x 8.65 (SOIC | 14)     15300000     20     75     60     78     10