v01.0101 HMC172QS24 GaAs MMIC SP6T SWITCH DC - 2.5 GHz Typical Applications Features The HMC172QS24 is ideal for: Low Insertion Loss (1 GHz): 0.6 dB • Basestation Infrastructure Integrated 3:6 Decoder 24 Lead QSOP Package General Description The HMC172QS24 is a low-cost SP6T switch in a 24-lead QSOP package for use in antenna diversity, switched filter banks, gain/attenuation selection, and general channel multiplexing applications. The switch can control signals up to 2.5 GHz and is especially suited for 800-1000 MHz and 17002000 MHz basestation applications. A 3:6 decoder is integrated on the switch, requiring only 3 control lines and a negative bias to select each RF path. The 3:6 decoder replaces 12 control lines normally required by GaAs SP6T switches. Switch outputs are reflective shorts when “off”. The QSOP24 package occupies the same area as a 14-lead SOIC. See positive bias/TTL SP6T version HMC252QS24. Electrical Specifications, TA = +25° C, For 0/-5V Control and Vee = -5V in a 50 Ohm System Parameter Frequency Min. Typ. Max. Units 0.5 0.6 1.0 1.5 0.8 0.9 1.5 2.0 dB dB dB dB Insertion Loss DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 2.5 GHz Isolation DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 2.5 GHz 36 31 22 19 41 35 26 23 dB dB dB dB Return Loss DC - 1.0 GHz DC - 2.0 GHz DC - 2.5 GHz 19 7 5 23 11 8 dB dB dB Input Power for 1 dB Compression 50 MHz 0.5 - 2.5 GHz 22 24 dBm dBm Input Third Order Intercept 50 MHz 0.5 - 2.5 GHz 35 40 dBm dBm Switching Characteristics DC - 2.5 GHz 25 50 ns ns tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 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 Online at www.hittite.com 14 SWITCHES - SMT Functional Diagram 14 - 1 HMC172QS24 v01.0101 GaAs MMIC SP6T SWITCH DC - 2.5 GHz SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz Isolation 0 0 -0.5 -10 ISOLATION (dB) INSERTION LOSS (dB) GaAsLoss MMIC Insertion -1 -1.5 -2 -2.5 -20 -30 -40 -50 -3 -60 0 1 2 3 0 1 FREQUENCY (GHz) 0 -20 -5 RF6-5 -30 -10 S11 RFC ISOLATION (dB) RETURN LOSS (dB) SWITCHES - SMT 14 - 2 3 Isolation Between several RF I/0s Return Loss 14 2 FREQUENCY (GHz) -15 S22 -20 -25 -30 RF1-2 RF3-2 RF4-5 -40 RF2-3 RF5-4 -50 -35 -40 -60 0 1 2 FREQUENCY (GHz) 3 0 1 2 FREQUENCY (GHz) 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 Online at www.hittite.com 3 HMC172QS24 v01.0101 GaAs MMIC SP6T SWITCH DC - 2.5 GHz Truth Table Bias Voltage & Current Control Input Vee Range = -5.0 Vdc ± 10% Signal Path State Vee (Vdc) Iee (Typ.) (mA) Iee (Max.) (mA) -5.0 5.0 8.5 A B C RFCOM to: High High High RF1 Low High High RF2 High Low High RF3 Low Low High RF4 High High Low RF5 Low High Low RF6 State Bias Condition High Low Low ALL OFF Low 0 to -3 VDC @ 250uA Typ. Low Low Low ALL OFF High Vee +0.8 VDC @ 100uA Max. Control Voltages SWITCHES - SMT 14 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 Online at www.hittite.com 14 - 3 HMC172QS24 v01.0101 GaAs MMIC SP6T SWITCH DC - 2.5 GHz Absolute Maximum Ratings Bias Voltage Range (Port Vee) -7.0 Vdc Control Voltage Range (A & B) Vee -0.5V to +1.0 Vdc Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C Maximum Input Power +26 dBm (<500MHz) +29 dBm (>500MHz) Outline Drawing SWITCHES - SMT 14 NOTES: 1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. 2. LEADFRAME MATERIAL: COPPER ALLOY 3. LEADFRAME PLATING: Sn/Pb SOLDER 4. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE. 6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE. 7. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND. 14 - 4 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 Online at www.hittite.com v01.0101 HMC172QS24 GaAs MMIC SP6T SWITCH DC - 2.5 GHz TTL Interface Circuit 14 SWITCHES - SMT Note: Control inputs A, B, and C can be driven directly with TTL logic with -5 Volts applied to the HCT logic gate Vee and to pin 11 (Vee) of the RF 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 Online at www.hittite.com 14 - 5 v01.0101 HMC172QS24 GaAs MMIC SP6T SWITCH DC - 2.5 GHz Evaluation Circuit Board SWITCHES - SMT 14 List of Material Item Description J1 - J7 PC Mount SMA RF Connector J8 - J12 DC Pin C1 - C7 100 pF Capacitor, 0402 Pkg. C8 - C11 10,000 pF capacitor, 0603 Pkg. U1 HMC172QS24 SP6T Switch PCB* 103700 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 14 - 6 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 Online at www.hittite.com