HMC288MS8E View Datasheet(PDF) - Hittite Microwave
Part Name
Description
Manufacturer
HMC288MS8E Datasheet PDF : 6 Pages
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v01.0705
HMC288MS8 / 288MS8E
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
5
Truth Table
Control Voltage Input
V1
8 dB
V2
4 dB
V3
2 dB
Attenuation
Setting
RF1 - RF2
High
High
High
Reference
I.L.
High
High
Low
2 dB
High
Low
High
4 dB
Low
High
High
8 dB
Low
Low
Low
14 dB
Max. Atten.
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
Control & Bias Voltages
State
Bias Condition
Low
0 to +0.2V @ 20 uA Max.
High
Vdd ± 0.2V @ 50 uA Max
Note: Vdd = +3V to 5V ± 0.2V
Application Circuit
DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specific
frequency to pass with minimal loss. R1 = 5K Ohm is required to supply voltage to the circuit throught either PIN 5 or PIN 8.
5 - 36
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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