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For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
8
8 - 5
HMC973LP3E
v00.0910
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 0.5 - 6.0 GHz
Application Circuit
Pin number
Function
Description
Interface schematic
1, 2, 4, 9, 11, 12
Ground Paddle
GnD
these pins and the exposed ground paddle must
be connected to rF/DC ground.
3
rFout
this pin is DC coupled and matched to 50 ohms.
A blocking capacitor is required if rF line potential
is not equal to 0V.
5
Vdd
supply Voltage
6, 8, 13 - 16
n/C
the pins are not connected internally; however, all data
shown herein was measured with these pins connected to
rF/DC ground externally.
7
Vctrl
Control Voltage
10
rFIn
this pin is DC coupled and matched to 50 ohms.
A blocking capacitor is required if rF line potential
is not equal to 0V. the HMC973LP3e is a unidirectional
device with optimum linearity performance achieved with
rF input signal applied to rFIn package lead.
Pin Descriptions
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