HMC345LP3
/
345LP3E
v04.0805
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
Typical Applications
This switch is suitable for usage in DC - 8.0 GHz 50-
Ohm or 75-Ohm systems:
•
Broadband
•
Fiber Optics
•
Switched Filter Banks
•
Wireless below 8 GHz
Features
Broadband Performance: DC - 8 GHz
High Isolation: 35 dB@ 6 GHz
Low Insertion Loss: 2.2 dB@ 6 GHz
Integrated Positive Supply 2:4 TTL Decoder
3 x 3 mm SMT Package
Functional Diagram
General Description
The HMC345LP3 & HMC345LP3E 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. This switch also includes an on board
binary decoder circuit which reduces the required
logic control lines to two. The switch operates using a
positive control voltage of 0/+5V, and requires a fixed
bias of +5V.
10
SWITCHES - SMT
* Blocking capacitors are required at ports RFC and RF1,
2, 3, & 4. Their value will determine the lowest transmission
frequency.
Electrical Specifi cations,
T
A
= +25° C, With 0/+5V Control, 50 Ohm System
Parameter
Insertion Loss
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
2.0 - 8.0 GHz
2.0 - 8.0 GHz
2.0 - 8.0 GHz
37
32
31
27
10
8
7
6
6
17
37
Min.
Typ.
2.0
2.2
2.4
42
37
35
32
13
11
10
9
10
21
45
50
120
Max.
2.4
2.6
2.9
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
ns
ns
Isolation
Return Loss
“On State”
Return Loss (RF1 - RF4)
Input Power for 1 dB Compression
“Off State”
Input Third Order Intercept
(Two-Tone Input Power = +7 dBm Each Tone, 1MHz Tone Separation)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 8.0 GHz
10 - 208
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
HMC345LP3
/
345LP3E
v04.0805
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
Insertion Loss vs. Temperature
0
Isolation
0
-10
RF1
RF2
RF3
RF4
-1
INSERTION LOSS (dB)
ISOLATION (dB)
+25 C
-40 C
+85 C
-20
-30
-40
-50
-60
-70
-2
-3
-4
-5
0
1
2
3
4
5
6
7
8
9
FREQUENCY (GHz)
0
1
2
3
4
5
6
7
8
9
FREQUENCY (GHz)
10
SWITCHES - SMT
10 - 209
Return Loss
0
RFC
RF1-RF4 ON
RF1-RF4 OFF
0.1 and 1 dB Input Compression Point
25
INPUT COMPRESSION POINT (dBm)
-5
RETURN LOSS (dB)
22
-10
19
-15
16
-20
13
0.1dB Compression Point
1.0dB Compression Point
-25
0
1
2
3
4
5
6
7
8
9
FREQUENCY (GHz)
10
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
Input Third Order Intercept Point
INPUT THIRD ORDER INTERCEPT (dBm)
60
55
50
45
40
35
30
1
2
3
4
5
6
7
8
FREQUENCY (GHz)
RF1
RF2
RF3
RF4
* Isolation is recorded above insertion loss & measured at output of switch.
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
HMC345LP3
/
345LP3E
v04.0805
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
Absolute Maximum Ratings
Bias Voltage Range (Vdd)
Control Voltage Range
(A & B)
Channel Temperature
Thermal Resistance
(Insertion Loss Path)
Thermal Resistance
(Terminated Path)
Storage Temperature
Operating Temperature
Maximum Input Power
ESD Sensitivity (HBM)
+7.0 Vdc
-0.5V to Vdd +1.0 Vdc
150 °C
143 °C/W
Bias Voltage & Current
Vdd Range = +5.0 Vdc ± 10%
Vdd
(Vdc)
+5.0
Idd (Typ.)
(mA)
3.0
Idd (Max.)
(mA)
6.0
Control Voltages
1030 °C/W
State
-65 to +150 °C
-40 to +85 °C
+24 dBm
Class 1A
Low
High
Bias Condition
0 to +0.8 Vdc @ 5 uA Typical
+2.0 to +5.0 Vdc @ 60 uA Typical
10
SWITCHES - SMT
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Truth Table
Control Input
A
Low
High
Low
High
B
Low
Low
High
High
Signal Path State
RFCOM to:
RF1
RF2
RF3
RF4
Note: DC blocking capacitors are required at ports RFC
and RF1, 2, 3, & 4. Their value will determine the lowest
transmission frequency.
10 - 210
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
HMC345LP3
/
345LP3E
v04.0805
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
Outline Drawing
10
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Package Information
Part Number
HMC345LP3
HMC345LP3E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
345
XXXX
345
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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
10 - 211
SWITCHES - SMT
HMC345LP3
/
345LP3E
v04.0805
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
Pin Descriptions
Pin Number
1, 4,
9, 12, 15
2, 3,
10, 11, 13
Function
RF4, RF3,
RF2, RF1, RFC
Description
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
This pin should be connected to PCB RF
ground to maximize isolation.
Package bottom has exposed metal paddle that
must also be connected to PCB RF ground.
Interface Schematic
N/C
5, 14, 16
GND
6
VDD
Supply Voltage +5V ± 10%
10
SWITCHES - SMT
7
CTLB
See truth table and control voltage table.
8
CTLA
See truth table and control voltage table.
10 - 212
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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