HMC305LP4E View Datasheet(PDF) - Hittite Microwave

Part Name

Description

Manufacturer

HMC305LP4E

0.5 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

Hittite Microwave 

HMC305LP4 / 305LP4E

v03.0809

5

UED Pin Descriptions

TIN Pin Number

Function

N 1, 3, 4, 6, 10, 12, 13,

15, 16, 18

N/C

DISCO DUCTesigns 2,17

RF1, RF2

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

Description

These pins should be connected to PCB RF ground to

maximize performance.

This pin is DC coupled and matched to 50 Ohms

Blocking capacitors are required. Select value based

on lowest frequency of operation.

Interface Schematic

NPot RRecomOmended for New D 5

Serial Output

Serial data output. Serial input data

delayed by 8 clock cycles

7

8

9

11

14

19 - 24

Reset

Shift Clock

Latch Enable

Serial Input

See truth table, control voltage table and timing diagram.

Vcc

GND

Supply Voltage.

Package bottom has an exposed metal paddle that must also

be connected to RF/DC Ground.

5-6

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

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