9

9 - 9

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

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

No connection necessary. These pins may be

connected to RF/DC ground. Performance will

not be affected

Pin Descriptions

HMC951LP4E

v00.0910

GaAs MMIC I/Q DOWNCONVERTER

5.6 - 8.6 GHz