2 GHz to 18 GHz
Limiting Amplifier Module
Data Sheet
HMC7891
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FEATURES
High gain: 47 dB
P1dB output power: 10 dBm
Saturated output power (P
SAT
): 13 dBm
Limiting dynamic range: 40 dB minimum
Field replaceable SMA connectors
Operating temperature: −40°C to +85°C
APPLICATIONS
Telecom infrastructure
Test instrumentation
Electronic warfare
Aerospace
Radar
FUNCTIONAL BLOCK DIAGRAM
IN
OUT
+
REGULATION
HMC7891
GND
13793-001
Figure 1.
GENERAL DESCRIPTION
The HMC7891 is a limiting amplifier that operates over the band of
2 GHz to 18 GHz, with a high gain of 47 dB. The amplifier provides
a saturated output power of 13 dBm over the input power range of
−30 dBm to +10 dBm, for a limiting dynamic range of 40 dB.
The amplifier can also be used as a frequency tripler due to the
high third harmonic output level at saturation. See Figure 14 for a
plot of third harmonic levels with input signals from 2 GHz to
6 GHz with an input drive level of 10 dBm.
An integrated voltage regulator provides the proper bias voltage,
drawing 300 mA from a single dc power supply of 8 V ± 1 V.
The HMC7891 is packaged in a compact modular design with field
replaceable SMA connectors.
