HMC544 / 544E
v00.0206
GaAs MMIC T/R SWITCH,
DC - 4 GHz
Typical Applications
The HMC544 / HMC544E is ideal for:
• Cellular/PCS/3G Infrastructure
• Basestations & Repeaters
Features
Very Low Insertion Loss: 0.2 dB @ 1.0 GHz
High Input P1dB: +39 dBm
High Input IP3: +55 dBm
• WLAN, WiMAX and WiBro
Positive Control: 0/+3V to 0/+5V
Compact SOT26 SMT Package
• Microwave and Fixed Wireless Radios
Functional Diagram
General Description
The HMC544 & HMC544E are low cost SPDT swit-
ches in 6-lead SOT26 packages for use in transmit-
receive applications which require very low insertion
loss at medium power levels. These devices can
control signals from DC to 4.0 GHz and are especially
suited for 450, 900, 1900, 2300, and 2700 MHz
applications with <0.5 dB insertion loss. This GaAs
PHEMT design provides exceptional linearity
performance of +36 dBm 1dB compression point and
+55 dBm third order intercept at +3 volt bias. RF1
and RF2 are reflective opens when “Off”. On-chip
circuitry allows positive control operation at very low
DC current.
10
Electrical Specifications, TA = +25° C, Vctl = 0/+3 Vdc, 50 Ohm System
Parameter
Frequency
Min.
Typ.
Max.
Units
DC - 1.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
DC - 4.0 GHz
0.25
0.4
0.5
0.7
0.5
0.7
0.8
1.0
dB
dB
dB
dB
Insertion Loss
DC - 1.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
DC - 4.0 GHz
18
10
9
23
14
13
12
dB
dB
dB
dB
Isolation
8
Return Loss
DC - 4.0 GHz
0.3 - 4.0 GHz
32
dB
0/+5V Control
0/+3V Control
36
33
39
36
dBm
dBm
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-Tone Input Power = +27 dBm Each Tone)
0.3 - 4.0 GHz
DC - 4.0 GHz
55
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
70
140
ns
ns
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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