For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

5

HMC539ALP3/539ALP3E

v01.0416

0.25 dB LSB GaAs MMIC 5-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 4 GHz

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1

Vdd

Supply Voltage.

2, 11

RF1, RF2

This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required.

Select value based on lowest frequency of operation.

3, 9, 10

N/C

These pins should be connected to PCB RF ground to

maximize performance.

4 - 8

ACG1 - ACG5

External capacitor to ground is required. Select value for

lowest frequency of operation. Place capacitor as close

to pins as possible.

12 - 16

V1 - V5

See truth table and control voltage table.

GND

Package bottom has an exposed metal paddle that must be

connected to RF Ground.

Application Circuit

Recommended Component Values

C1, C2

100 pF ± 10%

C3

1,000 pF ± 10%

C4

330 pF ± 10%

R1 - R5

100 Ohm ± 10%