LMH6554_15 Datasheet, PDF (1/29 Pages) Texas Instruments – LMH6554 2.8-GHz Ultra Linear Fully Differential Amplifier

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LMH6554
SNOSB30P – OCTOBER 2008 – REVISED JANUARY 2015
LMH6554 2.8-GHz Ultra Linear Fully Differential Amplifier
1 Features
•1 Small-Signal Bandwidth 2.8 GHz
• 2 V_PP Large-Signal Bandwidth 1.8 GHz
• 0.1 dB Gain Flatness 830 MHz
• OIP3 at 150 MHz 46.5 dBm
• HD2/HD3 at 75 MHz –96 / –97 dBc
• Input Noise Voltage 0.9 nV/√Hz
• Input Noise Current 11 pA/√Hz
• Slew Rate 6200 V/μs
• Power 260 mW
• Typical Supply Current 52 mA
• 14-Lead UQFN Package
2 Applications
• Differential ADC Driver
• Single-Ended to Differential Converter
• High-Speed Differential Signaling
• IF/RF and Baseband Gain Blocks
• SAW Filter Buffer/Driver
• Oscilloscope Probes
• Automotive Safety Applications
• Video Over Twisted Pair
• Differential Line Driver
3 Description
The LMH6554 device is a high-performance fully
differential amplifier designed to provide the
exceptional signal fidelity and wide large-signal
bandwidth necessary for driving 8- to 16-bit high-
speed data acquisition systems. Using TI’s
proprietary differential current mode input stage
architecture, the LMH6554 has unity gain, small-
signal bandwidth of 2.8 GHz and allows operation at
gains greater than unity without sacrificing response
flatness, bandwidth, harmonic distortion, or output
noise performance.
The low-impedance differential output of the device is
designed to drive ADC inputs and any intermediate
filter stage. The LMH6554 delivers 16-bit linearity up
to 75 MHz when driving 2-V peak-to-peak into loads
as low as 200 Ω.
The LMH6554 is fabricated in TI's advanced
complementary BiCMOS process and is available in a
space-saving 14-lead UQFN package for higher
performance.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMH6554
UQFN (14)
2.50 mm × 2.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application Schematic
R_S = 50:
91: 200:
V_S
a
C
AC-Coupled
Source
91:
30:
76.8:
0.1 PF _VCM
V⁺
+-
LMH6554
-+
V^-
0.1 PF
0.1 PF
200:
50:
50:
V_EN
ADC
Up To 16-Bit
Data Converter
V_CMO
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.