1 Features
1• Small Signal Bandwidth: 2400 MHz
• OIP3 @ 100 MHz: 42 dBm
• HD3 @ 100 MHz: −100 dBc
• Noise Figure: 9.7 dB
• Voltage Gain: 26 dB to 6 dB
• Voltage Gain Step Size: 0.25 dB
• Input Impedance: 100 Ω
• Parallel and Serial Gain Control
• Power Down Capability

2 Applications
• Microwave Backhaul Radio Receiver
• Zero IF Sampling
• In-Phase/Quadrature (I/Q) Sampling
• Medical Imaging
• RF/IF and Baseband Gain Blocks
• Differential Cable Driver

3 Description
The LMH6882 is a high-speed, high-performance
programmable differential amplifier. With a bandwidth of 2.4 GHz and high linearity of 42 dBm OIP3, the
LMH6882 is suitable for a wide variety of signal
conditioning applications.
The LMH6882 programmable differential amplifier
combines the best of both fully differential amplifiers
and variable-gain amplifiers. The device offers superior noise and distortion performance over the
entire gain range without external resistors, enabling
the use of just one device and one design for multiple
applications requiring different gain settings.
The LMH6882 is an easy-to-use amplifier that can
replace both fully differential, fixed-gain amplifiers as
well as variable-gain amplifiers. The LMH6882 requires no external gain-setting components and
supports gain settings from 6 dB to 26 dB with small,
accurate 0.25-dB gain steps. As shown in the
adjacent voltage gain chart the gain steps are very
accurate over the entire gain range. With an input
impedance of 100 Ω, the LMH6882 is easy to drive
from a variety of sources such as mixers or filters.
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.