HMC290 データシートの表示（PDF） - Hittite Microwave
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HMC290 Datasheet PDF : 6 Pages
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v01.0605
HMC290 / 290E
2 dB LSB GaAs MMIC 2-BIT DIGITAL
ATTENUATOR, 0.7 - 4.0 GHz
6
Truth Table
Control Voltage Input
V2
4 dB
V1
2 dB
Attenuation
Setting
RF1 - RF2
High
High
Reference I.L.
High
Low
2 dB
Low
High
4 dB
Low
Low
6 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 3 or PIN 1.
6 - 42
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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