5

5 - 424

For price, delivery, and to place orders, please contact 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 Circuit

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1RFIN

This pin is DC coupled.

An off chip DC blocking capacitor is required.

3

RFOUT

RF output and DC Bias (Vcc) for the output stage.

2, 4

GND

These pins must be connected to RF/DC ground.

Recommended Component Values for Key Application Frequencies

Component

Frequency (MHz)

50

900

1900

2200

2400

3500

5200

5500

L1

270 nH

56 nH

18 nH

18 nH

15 nH

8.2 nH

6.8 nH

3.3 nH

C1, C2

0.01 μF

100 pF

100 pF

100 pF

100 pF

100 pF

100 pF

100 pF

Note:

1. External blocking capacitors are required on

RFIN and RFOUT.

Recommended Bias Resistor Values

for Icc= 25 mA, Rbias= (Vs - Vcc) / Icc

Supply Voltage (Vs)

3V

5V

6V

8V

10V

30 Ω

110 Ω

150 Ω

240 Ω

300 Ω

1/8 W

1/8 W

1/4 W

1/2 W

1/2 W

SiGe HBT GAIN BLOCK

MMIC AMPLIFIER, DC - 6.0 GHz

v01.0705