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| v04.0604 MICROWAVE CORPORATION HMC348LP3 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 3 mm x 3 mm x 1 mm SMT Package GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz Typical Applications The HMC348LP3 is ideal for: * 75 Ohm Systems CATV Signal Distribution, Cable Modem Headend & DBS IF Switching * 50 Ohm Systems Basestation Infrastructure & Test Equipment Functional Diagram General Description The HMC348LP3 is a non-reflective GaAs MESFET SPDT switch in a low cost leadless QFN surface mount plastic package 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. 14 SWITCHES - SMT 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 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 Max. 0.9 1.0 Units dB dB dB dB dB dB dB dB dB dB dBm dBm dBm dBm dBm dBm dBm dBm 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) DC - 2500 MHz 25 600 ns ns 14 - 218 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v04.0604 HMC348LP3 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) INSERTION LOSS (dB) 1 1.5 2 2.5 -0.5 -0.5 -1 -1 -1.5 +25C +85C -40C -1.5 -2 0 0.5 FREQUENCY (GHz) -2 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) Isolation, 50 Ohm System 0 -10 -20 RF1 RF2 ALL OFF Isolation, 75 Ohm System 0 -10 -20 14 SWITCHES - SMT 14 - 219 ISOLATION (dB) ISOLATION (dB) -30 -40 -50 -60 -70 -80 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) -30 -40 -50 -60 -70 -80 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) Return Loss, 50 Ohm System 0 -5 RFC RF1, RF2 ON RF1, RF2 OFF Return Loss, 75 Ohm System 0 -5 RFC RF1, RF2 ON RF1, RF2 OFF RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 2.5 FREQUENCY (GHz) For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v04.0604 HMC348LP3 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 0.1dB T=+85C 0.1dB T=-40C 1dB T=+25C 1dB T=+85C 1dB T=-40C Absolute Maximum Ratings Bias Voltage & Current Vdd Range = +5.0 Vdc 10% Vdd (Vdc) +5.0 Idd (Typ.) (mA) 1.1 Idd (Max.) (mA) 2.2 14 SWITCHES - SMT 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 +7.0 Vdc +30 dBm +0.5V to Vdd + 1.0 Vdc 150 C 0.3 W Truth Table Control Input A High B Low High Low Signal Path State RFC to RF1 On Off Off RFC to RF2 Off On Off 104 C/W 240 C/W -65 to +150 C Low -40 to +85 C Low Control Voltages State Low High Bias Condition 0 to +0.8V @ 5 uA Typical +2.0 to +5.0 Vdc @ 35 uA Typical 14 - 220 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v04.0604 HMC348LP3 GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz Outline Drawing NOTES: 1. MATERIAL PACKAGE BODY: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. 2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY 3. LEAD AND GROUND PADDLE PLATING: Sn/Pb SOLDER 4. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE 6. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 7. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 8. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 9. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN. 14 SWITCHES - SMT 14 - 221 Pin Descriptions Pin Number 1 Function Vdd Description Supply Voltage +5V 10% 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. Interface Schematic 2, 4, 5, 6, 9, 12, 15,16 N/C 3, 7, 14 RFC, RF1, RF2 10 B See truth table and control voltage table. 11 A See truth table and control voltage table. 8, 13 ACG1, ACG2 External capacitors to ground are required. Select value for optimal isolation below 500 MHz. For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v04.0604 HMC348LP3 GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz Application Circuit 14 SWITCHES - SMT 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. 14 - 222 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com MICROWAVE CORPORATION v04.0604 HMC348LP3 GaAs MMIC SPDT NON-REFLECTIVE CATV SWITCH, DC - 2.5 GHz Evaluation PCB (50 Ohms) 14 SWITCHES - SMT 14 - 223 List of Material Item J1 - J3 J4 - J7 R1 - R2 C1, C2, C4 - C7 C3 U1 PCB* Description PC Mount SMA RF Connector DC Pin 100 Ohm Resistor, 0402 Pkg. 3300 pF Capacitor, 0402 Pkg. 4.7 uF Tantalum Capacitor HMC348LP3 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. * Circuit Board Material: Rogers 4350 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com |
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