SWITCHES - SMT
10
10 - 232
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
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
General Description
Features
Functional Diagram
The HMC348LP3 & HMC348LP3E are non-re ective
GaAs MESFET SPDT switches in low cost leadless
QFN surface mount plastic packages ideal for CATV
applications. Covering DC to 2.5 GHz, the switch offers
high isolation, low insertion loss, integrated 75 Ohm
terminations and an “all off” state. The switch features
>80 dB isolation at 5 MHz and >55 dB isolation up to
1 GHz. The switch operates using complementary
positive control voltage logic lines of +5/0V and
requires a +5V bias supply (Vdd). This switch offers
excellent performance in both 50 Ohm & 75 Ohm
systems for either SPDT or SPST functions.
High Isolation: >80 dB @ 5 MHz (50 Ohm)
>55 dB @ 1 GHz (50 Ohm)
“All Off” Isolation State
Non-Re ective Design, 75 Ohm Terminations
3x3 mm SMT Package
Electrical Speci cations, TA = +25° C, With 0/+5V Control, 50 Ohm System
Typical Applications
The HMC348LP3 / HMC348LP3E is ideal for:
• 75 Ohm Systems
CATV Signal Distribution, Cable Modem
Headend & DBS IF Switching
• 50 Ohm Systems
Basestation Infrastructure & Test Equipment
Parameter Frequency Min. Typ. Max. Units
Insertion Loss DC - 1000 MHz
DC - 2500 MHz
0.6
0.7
0.9
1.0
dB
dB
Isolation
DC - 250 MHz
DC - 750 MHz
DC - 1000 MHz
DC - 2000 MHz
DC - 2500 MHz
63
53
50
47
45
68
58
55
52
50
dB
dB
dB
dB
dB
Return Loss “On State” DC - 2500 MHz 15 20 dB
Return Loss RF1, RF2 “Off State” DC - 1000 MHz
DC - 2500 MHz
9
8
12
11
dB
dB
Input Power for 1 dB Compression 50 MHz
1000 MHz
20
25
23
28
dBm
dBm
Input Third Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
50 MHz
1000 MHz
2500 MHz
43
48
51
dBm
dBm
dBm
Input Second Order Intercept
(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
50 MHz
1000 MHz
2500 MHz
72
89
80
dBm
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 2500 MHz 25
600
ns
ns
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
SWITCHES - SMT
10
10 - 233
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
Return Loss, 50 Ohm System
Insertion Loss, 50 Ohm System
Isolation, 50 Ohm System
Return Loss, 75 Ohm System
Insertion Loss, 75 Ohm System
Isolation, 75 Ohm System
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5
+25C
+85C
-40C
INSERTION LOSS (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5
RFC
RF1, RF2 ON
RF1, RF2 OFF
RETURN LOSS (dB)
FREQUENCY (GHz)
-80
-70
-60
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5
ISOLATION (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5
RFC
RF1, RF2 ON
RF1, RF2 OFF
RETURN LOSS (dB)
FREQUENCY (GHz)
-80
-70
-60
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5
RF1
RF2
ALL OFF
ISOLATION (dB)
FREQUENCY (GHz)
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5
INSERTION LOSS (dB)
FREQUENCY (GHz)
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
SWITCHES - SMT
10
10 - 234
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
Truth Table
Control Voltages
Control Input Signal Path State
A B RFC to RF1 RFC to RF2
High Low On Off
Low High Off On
Low Low Off Off
State Bias Condition
Low 0 to +0.8V @ 5 uA Typical
High +2.0 to +5.0 Vdc @ 35 uA Typical
Bias Voltage & Current
Vdd Range = +5.0 Vdc ±10%
Vdd
(Vdc)
Idd (Typ.)
(mA)
Idd (Max.)
(mA)
+5.0 1.1 2.2
Input Compression Point, 50 Ohm System Absolute Maximum Ratings
Bias Voltage Range (Vdd) +7.0 Vdc
RF Input Power +30 dBm
Control Voltage Range (A & B) +0.5V to Vdd + 1.0 Vdc
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 4 mW/°C above 85 °C) 0.3 W
Thermal Resistance
(Insertion Loss Path) 104 °C/W
Thermal Resistance
(Terminated Path) 240 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
10
12
14
16
18
20
22
24
26
28
30
32
0 0.5 1 1.5 2 2.5
0.1 dB T=+25C
0.1 dB T=+85C
0.1 dB T= -40C
1 dB T=+25C
1 dB T=+85C
1 dB T= -40C
INPUT COMPRESSION POINT (dBm)
FREQUENCY (GHz)
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
SWITCHES - SMT
10
10 - 235
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
Outline Drawing
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
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.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC348LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 348
XXXX
HMC348LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 348
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
SWITCHES - SMT
10
10 - 236
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
Application Circuit
The value of capacitors C1 & C2 are critical for low frequency isolation performance below 500 MHz. 3300 pF 0402 size capacitors
are recommended for optimal isolation down to 5 MHz. If the frequency of operation is above 500 MHz then 100 pF to 300 pF 0402
capacitors will be sufficient.
Pin Descriptions
Pin Number Function Description Interface Schematic
1 Vdd Supply Voltage +5V ±10%
2, 4, 5, 6,
9, 12, 15,16 N/C These pins should be connected to PCB RF ground
to maximize isolation.
3, 7, 14 RFC, RF1, RF2 These pins are DC coupled and matched to 75 Ohms.
Blocking capacitors are required.
8, 13 ACG1, ACG2 External capacitors to ground are required.
Select value for optimal isolation below 500 MHz.
10 B See truth table and control voltage table.
11 A See truth table and control voltage table.
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
SWITCHES - SMT
10
10 - 237
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
Evaluation PCB (50 Ohms)
The circuit board used in the nal application should
be generated with proper RF circuit design tech-
niques. Signal lines at the RF port should have 50
ohm impedance and the package ground leads and
package bottom should be connected directly to the
ground plane similar to that shown above. The eval-
uation circuit board shown above is available from
Hittite Microwave Corporation upon request.
Item Description
J1 - J3 PCB Mount SMA RF Connector
J4 - J7 DC Pin
R1 - R2 100 Ohm Resistor, 0402 Pkg.
C1, C2, C4 - C7 3300 pF Capacitor, 0402 Pkg.
C3 4.7 uF Tantalum Capacitor
U1 HMC348LP3 / HMC348LP3E
SPDT Switch
PCB [2] 106255 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC348LP3 / 348LP3E
GaAs MMIC SPDT NON-REFLECTIVE
CATV SWITCH, DC - 2.5 GHz
v05.0805
List of Materials for Evaluation PCB 106343 [1]
OBSOLETE
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
