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| MICROWAVE CORPORATION v03.0404 HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Features High Isolation: >45 dB Positive control: 0/+5V Non-Reflective Design Ultra Small Pakcage: MSOP8G Typical Applications The HMC284MS8G is ideal for: * Cellular/PCS Base Stations * 2.4 GHz ISM * 3.5 GHz Wireless Local Loop Functional Diagram General Description The HMC284MS8G is a low-cost SPDT switch in an 8-lead grounded base MSOP package. The design has been optimized to provide high isolation with minimal insertion loss for medium and low power applications. On-chip circuitry allows positive voltage control operation at very low DC currents with control inputs compatible with CMOS and most TTL logic families. In the "OFF" state, RF1 and RF2 are non-reflective. See reflective high isolation SPDT version, HMC194MS8. 14 SWITCHES - SMT Electrical Specifications, TA = +25 C, Vctl = 0/+5 Vdc, 50 Ohm System Parameter Frequency DC - 2.0 GHz DC - 3.0 GHz DC - 3.5 GHz RF1 & RF2 RF1 / RF2 RF1 / RF2 RF1 & RF2 DC - 2.0 GHz DC - 2.5 GHz DC - 3.0 GHz DC - 3.5 GHz DC - 2.0 GHz DC - 2.5 GHz DC - 3.5 GHz 0.5 - 3.5 GHz 0.5 - 1.0 GHz 0.5 - 3.5 GHz 0.5 - 3.5 GHz DC - 3.5 GHz tRISE, tFALL (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 40 60 ns ns 41 38/41 34/36 30 21 13 10 10 20 18 43 Min. Typ. 0.5 0.6 0.7 45 41/45 37/39 33 25 17 12 13 25 24 48 Max. 0.8 0.9 1.1 Units dB dB dB dB dB dB dB dB dB dB dB dBm dBm dBm Insertion Loss Isolation Return Loss (On State) Return Loss (Off State) Input Power for 1 dB Compression Input Third Order Intercept (Two-Tone Input Powew = 0 dBm Each Tone) Switching Speed 14 - 158 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 v03.0404 MICROWAVE CORPORATION HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Insertion Loss 0 -0.5 Isolation 0 -10 INSERTION LOSS (dB) ISOLATION (dB) -1 -1.5 -2 -2.5 -3 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) +85 C -40 C +25 C -20 RF1 -30 -40 -50 RF2 -60 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) Return Loss 0 -5 S11 (ON) 14 SWITCHES - SMT 14 - 159 RETURN LOSS (dB) -10 -15 -20 -25 -30 -35 S22 (ON) -40 0 0.5 1 1.5 2 2.5 3 3.5 4 FREQUENCY (GHz) S22 (OFF) 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 v03.0404 MICROWAVE CORPORATION HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Compression vs Frequency Carrier at 900 MHz CTL Input (Vdc) +5 Input Power for 0.1 dB Compression (dBm) 23 Input Power for 1.0 dB Compression (dBm) 25 Carrier at 1900 MHz Input Power for 0.1 dB Compression (dBm) 22 Input Power for 1.0 dB Compression (dBm) 24 Caution: Do not operate continuously at RF power input greater than 1 dB compression and do not "hot switch" power levels greater than +18 dBm (Control = 0/+5 Vdc). Distortion vs Frequency Control Input (Vdc) +5 Third Order Intercept (dBm) 0 dBm Each Tone 900 MHz 48 1900 MHz 50 14 SWITCHES - SMT Truth Table *Control Input Tolerances are +/-0.2 Vdc Control Input* A (Vdc) 0 +5 B (Vdc) +5 0 Control Current Ia (uA) -25 25 Ib (uA) 25 -25 Signal Path State RFC to RF1 ON OFF RFC to RF2 OFF ON DC blocks are required at ports RFC, RF1, RF2. 14 - 160 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 v03.0404 MICROWAVE CORPORATION HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Absolute Maximum Ratings Control Voltage Range Channel Temperature Thermal Resistance (Insertion Loss Path) Thermal Resistance (Terminated Path) Storage Temperature Operating Temperature RF Input Power Vctl = 0/+5V -0.2 to +7.5 Vdc 150 C 140 C/W 190 C/W -65 to +150 C -40 to +85 C +26 dBm Outline Drawing 14 SWITCHES - SMT 14 - 161 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 AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 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 v03.0404 MICROWAVE CORPORATION HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Typical Application Circuit 14 Notes: SWITCHES - SMT 1. Set A/B control to 0/+5V, Vdd = +5V and use HCT series logic to provide a TTL driver interface. 2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd = +5 Volts applied to the CMOS logic gates. 3. DC blocking capacitors are required for each RF port as shown. Capacitor value determines lowest frequency of operation. 4. Highest RF signal power capability is acheived wiht Vdd = +7V and A/B set to 0/+7V. 5. Back side paddle must be connected to RF ground. 6. A grounded coplanar waveguide PCB layout technique is recommended to achieve high isolation. The component side ground plane between RFC/grounded paddle and RF1/RF2 should be continuous, see below. There should be a continuous ground plane under component side layout. 14 - 162 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 v03.0404 MICROWAVE CORPORATION HMC284MS8G SPDT NON-REFLECTIVE SWITCH, DC - 3.5 GHz Evaluation PCB 14 SWITCHES - SMT 14 - 163 List of Material Item J1 - J3 J4 - J6 C1 - C3 R1, R2 U1 PCB* Description PC Mount SMA RF Connector DC Pin 100 pF capacitor, 0402 Pkg. 100 resistor, 0402 Pkg. HMC284MS8 SPDT Switch 107821 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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