HMC230MS8
/
230MS8E
v02.0505
4 dB LSB GaAs IC 3-BIT DIGITAL
ATTENUATOR, 0.75 - 2.0 GHz
Control & Bias Voltages
Truth Table
Control Voltage Input
V1
16 dB
High
High
High
Low
Low
V2
4 dB
High
Low
High
High
Low
V3
8 dB
High
High
Low
High
Low
Attenuation Setting
RF1 - RF2
Reference I.L.
4 dB
8 dB
16 dB
28 dB
Max. Atten.
6
ATTENUATORS - SMT
State
Low
High
Bias Condition
0 to +0.2Vdc @ 20 uA Max
Vdd ±0.2V @ 50 uA Typ
Note: Vdd = +3V to +5V ± 0.2V
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
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 through either PIN 1 or PIN 5.
6 - 10
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
HITTITE [ HITTITE MICROWAVE CORPORATION ]
