HMC472LP4E【PDF 6/8 页】ATTENUATOR DGTL 6BIT 24QFN

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Sheet目录54

2页 3页 4页 5页 [6页]7页 8页

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

5 - 145

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1, 3, 5, 12,

14, 16, 17, 18

N/C

These pins should be connected to PCB RF ground to

maximize performance.

Vdd

Supply Voltage.

4, 15

RF1, RF2

This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required. Select value based on

lowest frequency of operation.

6 - 11, 13

ACG1 - ACG7

External capacitors to ground are recommended for low and

high frequency operation. Select value for

lowest frequency of operation. Place capacitor as close

to pins as possible. For operation from 700 to 2700 MHz,

these pins may be left unconnected.

19 - 24

V1 - V6

See truth table and control voltage table.

GND

Package bottom has an exposed metal paddle that must also

be connected to RF/DC Ground.

HMC472LP4 / 472LP4E

v06.1108

0.5 dB LSB GaAs MMIC 6-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz

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