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HMC235QS16G

1 dB LSB GaAs MMIC 5-BIT DIGITAL ATTENUATOR, DC - 4 GHz

Hittite Microwave 

MICROWAVE CORPORATION

v01.0801

HMC235QS16G

1 dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 4 GHz

Suggested Driver Circuit

Vz=5.1V

Izt=50uA

2

COMPENSATED

DEVICES

CD4689

TTL

OR

CMOS

10K

VCC

GND

VCC

GND

74HCT04 (TTL)

74HC04 (CMOS)

100Ω*

Ax

100pF*

GaAs

ATTENUATOR

CONTROL

100Ω*

Bx

100pF*

-5 VDC

Simple driver using inexpensive standard logic ICs provides fast switching using minimum DC current.

*Recommended values to suppress unwanted RF signals at Ax/Bx control lines. Component values may be adjusted

for switching speed considerations.

2 - 46

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Visit us at www.hittite.com, or Email at sales@hittite.com

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