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HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Features
High Isolation: >80 dB @ 5 MHz (50 Ohm) >55 dB @ 1 GHz (50 Ohm) "All Off" Isolation State Non-Reflective Design, 75 Ohm Terminations 3x3 mm SMT Package
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
8
SWITCHES - SMT
Functional Diagram
General Description
The HMC348LP3 & HMC348LP3E are non-reflective 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.
Electrical Specifications, TA = +25 C, With 0/+5V Control, 50 Ohm System
Parameter Insertion Loss Frequency DC - 1000 MHz DC - 2500 MHz DC - 250 MHz DC - 750 MHz DC - 1000 MHz DC - 2000 MHz DC - 2500 MHz "On State" "Off State" DC - 2500 MHz DC - 1000 MHz DC - 2500 MHz 50 MHz 1000 MHz 50 MHz 1000 MHz 2500 MHz 50 MHz 1000 MHz 2500 MHz DC - 2500 MHz 63 53 50 47 45 15 9 8 20 25 Min. Typ. 0.6 0.7 68 58 55 52 50 20 12 11 23 28 43 48 51 72 89 80 25 600 Max. 0.9 1.0 Units dB dB dB dB dB dB dB dB dB dB dBm dBm dBm dBm dBm dBm dBm dBm ns ns
Isolation
Return Loss Return Loss RF1, RF2 Input Power for 1 dB Compression
Input Third Order Intercept (Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)
Input Second Order Intercept (Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation) Switching Characteristics tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF)
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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
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Insertion Loss, 50 Ohm System
0
Insertion Loss, 75 Ohm System
0
INSERTION LOSS (dB)
-0.5
INSERTION LOSS (dB)
-0.5
-1
-1
-1.5
+25C +85C -40C
-1.5
8
0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
-2 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
-2
Isolation, 50 Ohm System
0 -10 -20 ISOLATION (dB) -30 -40 -50 -60 -70 -80 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
RF1 RF2 ALL OFF
Isolation, 75 Ohm System
0 -10 -20 ISOLATION (dB) -30 -40 -50 -60 -70 -80 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
Return Loss, 50 Ohm System
0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
RFC RF1, RF2 ON RF1, RF2 OFF
Return Loss, 75 Ohm System
0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
RFC RF1, RF2 ON RF1, RF2 OFF
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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SWITCHES - SMT
HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Input Compression Point, 50 Ohm System
32 INPUT COMPRESSION POINT (dBm) 30 28 26 24 22 20 18 16 14 12 10 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz)
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
Absolute Maximum Ratings
Bias Voltage Range (Vdd) RF Input Power Control Voltage Range (A & B) Channel Temperature Continuous Pdiss (T = 85 C) (derate 4 mW/C above 85 C) Thermal Resistance (Insertion Loss Path) Thermal Resistance (Terminated Path) Storage Temperature Operating Temperature ESD Sensitivity (HBM) +7.0 Vdc +30 dBm +0.5V to Vdd + 1.0 Vdc 150 C 0.3 W 104 C/W 240 C/W -65 to +150 C -40 to +85 C Class 1A
8
SWITCHES - SMT
ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS
Bias Voltage & Current
Vdd Range = +5.0 Vdc 10% Vdd (Vdc) +5.0 Idd (Typ.) (mA) 1.1 Idd (Max.) (mA) 2.2
Truth Table
Control Input A High Low Low B Low High Low Signal Path State RFC to RF1 On Off Off RFC to RF2 Off On Off
Control Voltages
State Low High Bias Condition 0 to +0.8V @ 5 uA Typical +2.0 to +5.0 Vdc @ 35 uA Typical
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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
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Outline Drawing
8
SWITCHES - SMT
348 XXXX 348 XXXX
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 HMC348LP3 HMC348LP3E 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]
[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
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HMC348LP3 / 348LP3E
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Pin Descriptions
Pin Number 1 Function Vdd Description Supply Voltage +5V 10% Interface Schematic
2, 4, 5, 6, 9, 12, 15,16
N/C
These pins should be connected to PCB RF ground to maximize isolation. These pins are DC coupled and matched to 75 Ohms. Blocking capacitors are required. External capacitors to ground are required. Select value for optimal isolation below 500 MHz.
8
SWITCHES - SMT
3, 7, 14
RFC, RF1, RF2
8, 13
ACG1, ACG2
10
B
See truth table and control voltage table.
11
A
See truth table and control voltage table.
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.
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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
v05.0805
GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz
Evaluation PCB (50 Ohms)
8
SWITCHES - SMT
List of Materials for Evaluation PCB 106343 [1]
Item J1 - J3 J4 - J7 R1 - R2 C1, C2, C4 - C7 C3 U1 PCB [2] Description PCB Mount SMA RF Connector DC Pin 100 Ohm Resistor, 0402 Pkg. 3300 pF Capacitor, 0402 Pkg. 4.7 uF Tantalum Capacitor HMC348LP3 / HMC348LP3E SPDT Switch 106255 Evaluation PCB
The circuit board used in the final application should be generated with proper RF circuit design techniques. 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 evaluation circuit board shown above is available from Hittite Microwave Corporation upon request.
[1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350
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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