HMC346_09 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 20 GHz

v04.1008
1
Typical Applications
This attenuator is ideal for use as a VVA
for DC - 20 GHz applications:
• Point-to-Point Radio
• VSAT Radio
HMC346
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 20 GHz
Features
Wide Bandwidth: DC - 20 GHz
Low Phase Shift vs. Attenuation
32 dB Attenuation Range
Die Size: 0.85 x 0.85 x 0.1 mm
Functional Diagram
General Description
The HMC346 die is an absorptive Voltage Variable
Attenuator (VVA) operating from DC - 20 GHz. It
features an on-chip reference attenuator for use
with an external op-amp to provide simple single
voltage attenuation control, 0 to -3V. The device is
ideal in designs where an analog DC control signal
must control RF signal levels over a 30 dB amplitude
range. For plastic packaged version, see the
HMC346MS8G which operates from DC - 8 GHz.
Electrical Specifications, T_A = +25° C, 50 ohm system
Parameter
Min.
Typ.
Max.
Units
Insertion Loss
DC - 12 GHz:
DC - 20 GHz:
1.7
2.3
dB
2.2
2.8
dB
Attenuation Range
DC - 12 GHz:
27
32
dB
DC - 20 GHz:
22
25
dB
Return Loss
Switching Characteristics
Input Power for 0.25 dB Compression (0.5 - 20
GHz)
Input Third Order Intercept (0.5 - 20 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
DC - 12 GHz:
6
10
12 - 20 GHz:
10
15
tRISE, tFALL (10/90% RF):
2
tON, tOFF (50% CTL to 10/90% RF):
8
Min. Atten:
+8
Atten. >2 dB:
+4
Min. Atten:
+25
Atten. >2 dB:
+10
dB
dB
ns
ns
dBm
dBm
dBm
dBm
1-2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com