9

9 - 9

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Phone: 978-250-3343

Fax: 978-250-3373

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Application Support: Phone: 978-250-3343 or apps@hittite.com

Pin Number

Function

Description

interface schematic

1, 4, 6, 7, 8, 9,

11, 12, 13, 19,

21, 22, 24

GND

These pins and package bottom must

be connected to rF/Dc ground

2

vDD

Power supply voltage for rF Amplifier. Bypass

capacitors are required. see application circuit

3

vBiAs_rF

This pin is used to set the Dc current of the

rF amplifier by selection of the external bias

resistor. see application circuit.

5

rFiN

This pin is the rF input pin. it is Ac

coupled and matched to 50 Ohms

10

LOiN

This pin is the LO input pin. it is Ac

coupled and matched to 50 Ohms

14, 16

vDD1, vDD2

Power supply voltages for LO Amplifier. Bypass

capacitors are required. see application circuit

15

vBiAs_LO

This pin is used to set the Dc current of the

LO amplifier by selection of the external bias

resistor. see application circuit.

17, 18

N/c

These pins are not connected internally; however, all data

shown herein was measured with these pins connected to

rF/Dc ground externally.

Pin Descriptions

HMC951LP4E

v01.0511

GaAs MMIC I/Q DOWNCONVERTER

5.6 - 8.6 GHz