5

5 - 142

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

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1, 3, 4, 8,

9, 10, 12

N/C

These pins should be connected to PCB

RF ground to maximize performance.

2, 11

RF1, RF2

This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required

13 - 15

V1 - V3

See truth table and control voltage table.

5 - 7

ACG1 - ACG3

External capacitor to ground is required.

Select value for lowest frequency of operation.

Place capacitor as close to pins as possible.

16

Vdd

Supply Voltage

GND

Package bottom has an exposed metal paddle

that must be connected to RF/DC ground.

Application Circuit

HMC468LP3 / 468LP3E

v03.1107

1 dB LSB GaAs MMIC 3-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 6 GHz