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

7

7 - 8

Pin Descriptions

pin Number

function

Description

interface schematic

1, 2, 5, 8, 11,

12, 13, 15

N/C

These pins are not connected internally; however, all data

shown herein was measured with these pins connected to

rf/DC ground externally.

3

rfiN

This pin is DC coupled.

off-chip DC blocking capacitor required.

4, 9

GND

These pins and the exposed ground paddle

must be connected to rf/DC ground.

6

ACG

AC Ground. Attach bypass capacitor per

application circuit.

7

res

external resistor pin for current control. see

table for external resistor value vs. bias current data.

10

rfoUT

This pin is matched to 50 ohms

14

Vdd

power supply voltage pin. external bypass

capacitors required.

16

Vctl

Control voltage pin for lNA / Bypass

modes. setting voltage equal to VDD enables lNA

mode. external Bypass capacitor required.

HMC669LP3 / 669LP3E

v04.0709

GaAs PHEMT MMIC LNA w/

FAILSAFE BYPASS MODE, 1700 - 2200 MHz