HMC712_10 Datasheet, PDF (1/8 Pages) Hittite Microwave Corporation – GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz

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Typical Applications
The HMC712 is ideal for:
• Point-to-Point Radio
• VSAT Radio
• Test Instrumentation
• Microwave Sensors
• Military, ECM & Radar
Functional Diagram
HMC712
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Features
Wide Bandwidth: 5 - 30 GHz
Excellent Linearity: +28 dBm Input P1dB
Wide Attenuation Range: 30 dB
Compact Die Size: 1.4 x 1.2 x 0.1 mm
General Description
The HMC712 die is an absorptive Voltage Variable
Attenuator (VVA) which operates from 5 - 30 GHz and
is ideal in designs where an analog DC control signal
must be used to control RF signal levels over a 30 dB
amplitude range. It features two shunt-type attenuators
which are controlled by two analog voltages, Vctrl1
and Vctrl2. Optimum linearity performance of the
attenuator is achieved by first varying Vctrl1 of the 1st
attenuation stage from -3V to 0V with Vctrl2 fixed at
-3V. The control voltage of the 2nd attenuation stage,
Vctrl2, should then be varied from -3V to 0V, with Vctrl1
fixed at 0V.
However, if the Vctrl1 and Vctrl2 pins are connected
together it is possible to achieve the full analog
attenuation range with only a small degradation in
input IP3 performance. Applications include AGC
circuits and temperature compensation of multiple
gain stages in microwave point-to-point and VSAT
radios.
Electrical Specifications, T_A = +25° C, 50 Ohm system
Parameter
Min.
Typ.
Max.
Units
Insertion Loss
5 - 16 GHz
2.5
dB
16 - 24 GHz
3.5
dB
24 - 30 GHz
4.5
dB
Attenuation Range
30
dB
Input Return Loss
12
dB
Output Return Loss
10
dB
Input Power for 1 dB Compression (any attenuation)
28
dBm
Input Third Order Intercept
(Two-tone Input Power = 10 dBm Each Tone)
32
dBm
1-1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]