LMH6555 Datasheet, PDF (1/37 Pages) Intersil Corporation – Low Distortion 1.2 GHz Differential Driver

LMH6555
www.ti.com
SNOSAJ1D – NOVEMBER 2006 – REVISED MARCH 2013
LMH6555 Low Distortion 1.2 GHz Differential Driver
Check for Samples: LMH6555
FEATURES
1
•2 Typical Values unless Otherwise Specified.
• −3 dB Bandwidth (V_OUT = 0.80 V_PP) 1.2 GHz
• ±0.5 dB Gain Flatness (V_OUT = 0.80 V_PP) 330
MHz
• Slew Rate 1300 V/μs
• 2^nd/3^rd 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
APPLICATIONS
• Differential ADC Driver
• Texas Instruments ADC081500/ ADC081000
– (Single or Dual) Driver
• Single Ended to Differential Converter
• Intermediate Frequency (IF) Amplifier
• Communication Receivers
• Oscilloscope Front End
DESCRIPTION
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 APPLICATION
R_S1
340 mV_{PP 50:}
a ^VIN
R_S2
50:
R_F1
V_IN+ ^RG1
+
-
V_IN- _RG2
LMH6555 ^RF2
R_T2
50:
R_T1
50:
V_OUT = 0.8 V_PP
V_OUT+
ADC081000/
ADC081500
V_{CMO SPI}
V_{CM_REF}
3.3V
+
OPT
LMV321 _OPT
-
Figure 1. Single Ended to Differential Conversion
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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