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OIP3 (dBm)
VOLTAGE GAIN (dB)
f = 100 MHz
P
OUT
= 4dBm / Tone
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LMH6882
SNOSC84D –AUGUST 2012–REVISED FEBRUARY 2015
LMH6882 DC to 2.4-GHz, High-Linearity, Dual, Programmable Differential Amplifier
1 Features 3 Description
The LMH6882 is a high-speed, high-performance
1
• Small Signal Bandwidth: 2400 MHz
programmable differential amplifier. With a bandwidth
• OIP3 @ 100 MHz: 42 dBm
of 2.4 GHz and high linearity of 42 dBm OIP3, the
• HD3 @ 100 MHz: −100 dBc
LMH6882 is suitable for a wide variety of signal
conditioning applications.
• Noise Figure: 9.7 dB
• Voltage Gain: 26 dB to 6 dB
The LMH6882 programmable differential amplifier
combines the best of both fully differential amplifiers
• Voltage Gain Step Size: 0.25 dB
and variable-gain amplifiers. The device offers
• Input Impedance: 100 Ω
superior noise and distortion performance over the
• Parallel and Serial Gain Control
entire gain range without external resistors, enabling
the use of just one device and one design for multiple
• Power Down Capability
applications requiring different gain settings.
2 Applications
The LMH6882 is an easy-to-use amplifier that can
replace both fully differential, fixed-gain amplifiers as
• Microwave Backhaul Radio Receiver
well as variable-gain amplifiers. The LMH6882
• Zero IF Sampling
requires no external gain-setting components and
• In-Phase/Quadrature (I/Q) Sampling
supports gain settings from 6 dB to 26 dB with small,
accurate 0.25-dB gain steps. As shown in the
• Medical Imaging
adjacent voltage gain chart the gain steps are very
• RF/IF and Baseband Gain Blocks
accurate over the entire gain range. With an input
• Differential Cable Driver
impedance of 100 Ω, the LMH6882 is easy to drive
from a variety of sources such as mixers or filters.
OIP3 vs Voltage Gain
The LMH6882 also supports 50-Ω single-ended
signal sources and supports DC- and AC-coupled
applications.
Parallel gain control allows the LMH6882 to be
soldered down in a fixed-gain so that no control
circuit is required. If dynamic gain control is desired,
the LMH6882 can be changed with SPI™ serial
commands or with the parallel pins.
The LMH6882 is fabricated in TI’s CBiCMOS8
proprietary complementary silicon germanium
process and is available in a space-saving, thermally
enhanced 36-pin WQFN package. The same
amplifier is offered in a single package as the
LMH6881.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
LMH6882 WQFN (36) 6.00 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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.
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