LMH6552_14 Datasheet, PDF (1/32 Pages) Texas Instruments – 1.5 GHz Fully Differential Amplifier

LMH6552
www.ti.com
SNOSAX9H – APRIL 2007 – REVISED MARCH 2013
1.5 GHz Fully Differential Amplifier
Check for Samples: LMH6552
FEATURES
1
•2 1.5 GHz −3 dB Small Signal
Bandwidth @ A_V = 1
• 1.25 GHz −3 dB Large Signal
Bandwidth @ A_V = 1
• 800 MHz Bandwidth @ A_V = 4
• 450 MHz 0.1 dB Flatness
• 3800 V/µs Slew Rate
• 10 ns Settling Time to 0.1%
– −90 dB THD @ 20 MHz
– −74 dB THD @ 70 MHz
• 20 ns Enable/Shutdown Pin
• 5 to 12V Operation
APPLICATIONS
• Differential ADC Driver
• Video Over Twisted Pair
• Differential Line Driver
• Single End to Differential Converter
• High Speed Differential Signaling
• IF/RF Amplifier
• Level Shift Amplifier
• SAW Filter Buffer/Driver
DESCRIPTION
The LMH6552 is a high performance fully differential
amplifier designed to provide the exceptional signal
fidelity and wide large-signal bandwidth necessary for
driving 8 to 14 bit high speed data acquisition
systems. Using TI's proprietary differential current
mode input stage architecture, the LMH6552 allows
operation at gains greater than unity without
sacrificing response flatness, bandwidth, harmonic
distortion, or output noise performance.
With external gain set resistors and integrated
common mode feedback, the LMH6552 can be
configured as either a differential input to differential
output or single ended input to differential output gain
block. The LMH6552 can be AC or DC coupled at the
input which makes it suitable for a wide range of
applications including communication systems and
high speed oscilloscope front ends. The performance
of the LMH6552 driving an ADC14DS105 is 86 dBc
SFDR and 74 dBc SNR up to 40 MHz.
The LMH6552 is available in an 8-pin SOIC package
as well as a space saving, thermally enhanced 8-Pin
WSON package for higher performance.
Typical Application
50:
Single-Ended
AC-coupled
Source
68.1:
127:
49.9:
0.1 PF
127:
68.1:
274:
V⁺
ADC14DS105
100: ^{620 nH}
-+
LMH6552
+-
V^{- 100:}
22 pF
620 nH
14-Bit
105
MSPS
V_REF
274:
Figure 1. Single-Ended Input Differential Output ADC Driver
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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