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MIXERS - DOWNCONVERTERS - SMT
17
HMC1090LP3E
v02.0113
BROADBAND HIGH IP3 DOWNCONVERTER
0.7 - 3.5 GHz
Application Information
The HMC1090LP3E is a broadband single channel, high dynamic range, high gain, low noise, high-linearity down-
converting mixer designed for RF frequencies from 700 MHz to 3.5 GHz. The HMC1090LP3E’s low noise and high
linearity performance makes it suitable for a wide range of transmission standards, including TDD, FDD, LTE, CDMA,
GSM, MC-GSM, W-CDMA, UMTS, TD-SCDMA and WiMAX applications.
The HMC1090LP3E offers an easy-to-use and complete frequency conversion solution for broadband receiver
applications in a highly compact 3x3 mm QFN package. The HMC1090LP3E greatly simplies the design of receiver
applications by increasing the integration level and reducing the number of required circuit elements thereby reducing
cost, area, and power consumption.
Principle of Operation
The HMC1090LP3E incorporates a double-balanced passive mixer which is driven from a single-ended LO input that
is broadband matched to 50 Ω and requires only a standard DC-blocking capacitor. The single-ended LO input is
converted into differential through the on-chip balun and followed by a LO driver stage.
The HMC1090LP3E’s single-ended RF input is converted into differential through the on-chip balun. The single-
ended RF input is internally broadband matched to 50 Ω and requires only a DC-blocking capacitor. Moreover, the
HMC1090LP3E’s RF input can be externally matched for narrow band applications with a simple matching network,
including a series inductor and a shunt capacitor, to further improve the performance. Please refer to the application
circuit for narrowband RF input matching for more information.
The HMC1090LP3E’s IF amplier is designed for differential 200 Ω output impedance. As recommended in the appli-
cation circuit a few external components are required at these IF outputs to acheive a broadband frequency response.
Please refer to the IF output interface section for more information. The HMC1090LP3E requires 5V and 3.3V supply
voltages and external bias voltages. Bias voltages generate reference currents for the IF and LO ampliers. The 3.3V
supply and the external bias voltages can be generated from the 5V supply in order to operate with a single supply.
Please refer to the single supply operation section for more information.
The reference currents to the LO ampliers and IF ampliers can be disabled through LOEN and IFEN pins respec-
tively. If the EN pin is connected to LOW or left unconnected, the part operates normally. If the EN pin is connected to
HIGH, the LO ampliers and IF ampliers are disabled.
Single Supply Operation
The HMC1090LP3E requires 5V and 3.3V supply voltages and external bias voltages. External bias voltages except
VGATE pin voltage are already generated from 5V supply voltage on the evaluation board (see application circuit).
These bias voltages can be optimized by series resistors with appropriate values from the 5V supply to the bias pins
(VCS, LOBIAS1, LOBIAS2). The resistor values on VCS, LOBIAS1 and LOBIAS2 traces on the evaluation board are
240 Ohms, 270 Ohms and 390 Ohms respectively. Refer to the VCS Interface and LOBIAS Interface section for more
information.
The nominal VGATE pin voltage is 4.8V, which is applied externally. However, the VGATE pin voltage can be tuned from
4.4V to 5V for optimization of Input IP3 and conversion gain performance. Once optimized, the VGATE pin voltage can
be generated from the 5V supply by changing the value of series resistor R13. Please refer to the VGATE interface sec-
tion for more information.