LMH6555 Low Distortion 1.2 GHz Differential Driver | TI.com

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Low Distortion 1.2 GHz Differential Driver


Recommended alternative parts

  • LMH6550  -  Lower Power, Lower BW (400 MHz)
  • LMH6551  -  Lower Power, Lower BW Version (370 MHz)
  • LMH6552  -  Lower Power, Adjustable Gain Version (1.5 GHz)


The LMH6555 is an ultra high speed differential line driver with 53 dB SFDR at 750 MHz. The LMH6555 features a fixed gain of 13.7 dB. An input to the device allows the output common mode voltage to be set independent of the input common mode voltage in order to simplify the interface to high speed differential input ADCs. A unique architecture allows the device to operate as a fully differential driver or as a single-ended to differential converter.

The outstanding linearity and drive capability (100Ω differential load) of this device are a perfect match for driving high speed analog-to-digital converters. When combined with the ADC081000/ ADC081500 (single or dual ADC), the LMH6555 forms an excellent 8-bit data acquisition system with analog bandwidths exceeding 750 MHz.

The LMH6555 is offered in a space saving 16-pin WQFN package.


  • Typical Values unless Otherwise Specified.
  • −3 dB Bandwidth (VOUT = 0.80 VPP) 1.2 GHz
  • ±0.5 dB Gain Flatness (VOUT = 0.80 VPP) 330 MHz
  • Slew Rate 1300 V/μs
  • 2nd/3rd Harmonics (750 MHz) −53/−54 dBc
  • Fixed Gain 13.7 dB
  • Supply Current 120 mA
  • Single Supply Operation 3.3V ±10%
  • Adjustable Common-Mode Output Voltage

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Part number Order 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz Acl, min spec gain (V/V) Approx. price (US$) Architecture BW @ Acl (MHz) Device type Features GBW (Typ) (MHz) Number of channels (#) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Slew rate (Typ) (V/us) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Vos (offset voltage @ 25 C) (Max) (mV)
LMH6555 Order now 53     54     750     4.8     3.73 | 1ku     Fully Differential ADC Driver     1200     RF FDA     On chip gain resistors     1200     1     -40 to 85     WQFN | 16     16WQFN: 16 mm2: 4 x 4 (WQFN | 16)     3000     3     3.6     3.9     24     50