Document
HMC344LP3 / 344LP3E
v06.1210
GaAs MMIC SP4T NON-REFLECTIVE SWITCH, DC - 8 GHz
Typical Applications
This switch is suitable for usage in DC - 8.0 GHz 50Ohm or 75-Ohm systems: • Broadband • Fiber Optics • Switched Filter Banks • Wireless below 8 GHz
Functional Diagram
15
Features
Broadband Performance: DC - 8 GHz High Isolation: 40 dB@ 6 GHz Low Insertion Loss: 1.8 dB@ 6 GHz Integrated 2:4 TTL Decoder 16 Lead 3x3mm QFN Package: 9 mm²
General Description
The HMC344LP3 & HMC344LP3E are broadband non-reflective GaAs MESFET SP4T switches in low cost leadless surface mount packages. Covering DC to 8 GHz, this switch offers high isolation and low insertion loss and extends the frequency coverage of Hittite’s SP4T switch product line. This switch also includes an on board binary decoder circuit which reduces the required logic control lines to two. The switch operates using a negative control voltage of 0/-5V, and requires a fixed bias of -5V.
Switches - multi-throw - SMT
15 - 1
Electrical Specifications, TA = +25° C, With 0/-5V Control, 50 Ohm System
Insertion Loss Isolation
Parameter
Return Loss
Return Loss Input Power for 1 dB Compression Input Third Order Intercept (Two-Tone Input Power = +7 dBm Each Tone) Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF)
“On State” “Off State”
Frequency DC - 2.0 GHz DC - 6.0 GHz DC - 8.0 GHz DC - 2.0 GHz DC - 4.0 GHz DC - 6.0 GHz DC - 8.0 GHz DC - 2.0 GHz DC - 4.0 GHz DC - 6.0 GHz DC - 8.0 GHz DC - 8.0 GHz 0.5 - 8.0 GHz
0.5 - 8.0 GHz
DC - 8.0 GHz
Min.
Typ.
1.6 1.8 2.1
43
48
36
41
34
40
31
36
12
15
9
12
8
11
5
8
7
10
17
21
37
40
35 150
Max.
2.0 2.2 2.5
Units
dB dB dB
dB dB dB dB
dB dB dB dB
dB
dBm
dBm
ns ns
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v06.1210
HMC344LP3 / 344LP3E
GaAs MMIC SP4T NON-REFLECTIVE SWITCH, DC - 8 GHz
Insertion Loss vs. Temperature
0
-1
INSERTION LOSS (dB)
-2
-3
-4
+25 C +85 C
-40 C
-5 0123456789
FREQUENCY (GHz)
Isolation
0
-10
RF1
RF2
RF3
-20
RF4
ISOLATION (dB)
-30
-40
-50
-60
-70 0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Switches - multi-throw - SMT
Return Loss
0
-5
-10
RFC RF1,2,3,4 On RF1,2,3,4 Off
RETURN LOSS (dB)
-15
-20
-25 .