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| Reflective SPDT GaAs MMIC Switch Technical Data MGS-70008 Features * Single-Pole, Double-Throw Output * Broad Bandwidth: DC to 3 GHz * Low Insertion Loss: 0.8 dB Typical at 1 GHz * Fast Switching Time: 3 ns Typical * Ultra Low DC Power Consumption * Small Surface-Mount Plastic Package sealed in a small, plastic, surfacemount SO-8 package. Switching is actuated by a -5 V control voltage per the truth table shown on the next page. -3.3 V operation is also possible with some reduction in P1 dB and IP3. The MGS-70008 is designed for high volume commercial applications where low insertion loss, high isolation, and fast switching speed are required. Its low cost and high performance make it suitable for a wide variety of uses such as digital cellular, spread spectrum, GPS, and other RF switching applications. Refer to applications note AN-G007 for more application details. The die is fabricated using HP's nominal 0.7 m Schottky-barriergate, gold metallization, and silicon nitride passivation to achieve excellent performance, uniformity, and reliability. SO-8 Package AC Equivalent Circuit/Pinout J1 Ground J2 Control 1 Ground Ground J3 Control 2 Description The MGS-70008 is a single-pole, double-throw monolithic GaAs MMIC switch. The J2 and J3 of the MGS-70008 are terminated to ground when "off" (an absorptive version, the MGS-71008, which terminates the "off" port in an internal 50 resistor, is also available). The switches are 5965-9116E 7-156 MGS-70008 Absolute Maximum Ratings Symbol Parameter Maximum Input Power below 500 MHz above 500 MHz Control Voltage Storage Temperature Units dBm dBm V C Absolute Maximum[1] +27 +30 -8.0 -65 to 150 TSTG Note: 1. Operation of this device above any one of these limits may cause permanent damage. Electrical Specifications, TA = 25C Symbol IC BW IL Parameters and Test Conditions[1] Control Input Current Bandwidth Insertion Loss 200 MHz 1000 MHz 2000 MHz 2500 MHz 3000 MHz 200 MHz 1000 MHz 2000 MHz 2500 MHz 3000 MHz DC -1000 MHz 1000-3000 MHz DC -2000 MHz 2000-3000 MHz 10% to 90% 200 MHz 1000 MHz 2000 MHz 200 MHz 1000 MHz 2000 MHz DC Units A GHz dB dB dB dB dB dB dB dB dB dB -- -- -- -- ns dBm dBm dBm dBm dBm dBm 29 DC-3 0.6 0.8 1.0 1.1 1.2 51 33 23 19 16 1.2:1 1.3:1 10:1 10:1 3 18.5 26.0 26.0 41 45 45 1.4:1 1.1 Min. Typ. Max. 12 110 ISO Isolation VSWR J1, J2 or J3 VSWR J2 or J3 ISW P1 dB[2] Voltage Standing Wave Ratio (on port) Voltage Standing Wave Ratio (off port) Switching Speed Output @ 1 dB Gain Compression IP3[2] 3rd Order Intercept Notes: 1. Measured in a 50 system at 1 GHz, unless otherwise specified, V C = -5 V. 2. Measured in a 50 system with VC = -7 V. 7-157 MGS-70008 Typical Performance, TA = 25C 0 -10 2:1 INSERTION LOSS (dB) -0.5 ISOLATION (dB) -20 ON PORT VSWR -1.0 -30 1.5:1 -1.5 -40 -2.0 0 1 2 3 -50 1:1 0 1 2 3 0 1 2 3 FREQUENCY (GHz) FREQUENCY (GHz) FREQUENCY (GHz) Figure 1. Insertion Loss vs. Frequency. VControl = -5 V. 40 Figure 2. Isolation vs. Frequency. VControl = -5 V. Figure 3. Input and Output Return Loss vs. Frequency. VControl = -7 V. 30 P1 dB (dBm) 20 10 0 0 1 2 3 FREQUENCY (GHz) Figure 4. Output Power vs. Frequency. VControl = -7 V. MGS-70008 Truth Table (Typical Performance at 1 GHz) Control Input C1 C2 0V 0V 0V -5 V -5 V 0V -5 V -5 V Insertion Loss J1-J2 J1-J3 16 dB 16 dB 33 dB .8 dB .8 dB 33 dB 19 dB 19 dB Return Loss J1 J2 J3 1 dB 1 dB 1 dB 22 dB 1 dB 22 dB 22 dB 22 dB 1 dB 1 dB 1 dB 1 dB For normal SPDT use For normal SPDT use MGS-70008 Typical Power Performance vs. Frequency and Control Voltage (VC) (All other typical specifications remain constant.) VC = -7 V Frequency 200 MHz 1000 MHz 2000 MHz P1 dB 18.5 dBm 26.0 dBm 26.0 dBm IP3 41 dBm 45 dBm 45 dBm VC = -5 V P1 dB 18.0 dBm 23.7 dBm 23.0 dBm IP3 41 dBm 44 dBm 44 dBm VC = -3.3 V P1 dB IP3 16.5 dBm 35 dBm 17.5 dBm 38 dBm 16.0 dBm 38 dBm 7-158 Typical Scattering Parameters, ON Switch Port, ZO = 50 , TA = 25C, VC = -5 V Freq. MHz 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 Mag. .04 .04 .04 .05 .06 .07 .09 .10 .11 .11 .11 .10 .08 .05 .01 .04 .11 .17 .22 .32 .37 .46 S11 Ang. -6.2 0.3 7.6 13.6 14.7 14.5 14.0 10.2 8.1 1.4 -3.2 -8.5 -13.1 -14.1 7.4 141.4 143.2 129.5 135.9 133.2 129.2 128.5 dB -.6 -.6 -.6 -.6 -.6 -.6 -.6 -.6 -.6 -.6 -.7 -.8 -.7 -.7 -.8 -1.1 -1.2 -1.4 -1.3 1.6 -2.2 -2.0 S21 Mag. .93 .93 .93 .93 .93 .93 .93 .93 .93 .93 .92 .91 .92 .92 .91 .88 .87 .85 .86 .83 .78 .79 Ang. -4.5 -8.5 -12.7 -16.8 -21.0 -25.7 -30.3 -34.8 -39.4 -44.5 -49.9 -54.5 -58.9 -64.0 -69.0 -75.0 -79.2 -81.7 -85.4 -94.4 -96.8 -96.4 dB -.6 -.6 -.6 -.7 -.7 -.6 -.6 -.6 -.6 -.6 -.7 -.7 -.7 -.7 -1.0 -1.3 -1.7 -1.6 -2.1 -3.0 -3.7 -4.2 S12 Mag. .934 .934 .930 .927 .927 .931 .930 .930 .928 .928 .922 .927 .920 .922 .894 .864 .823 .828 .788 .708 .652 .619 S22 Ang. -4.4 -8.3 -12.4 -16.3 -20.4 -24.5 -28.7 -32.9 -37.6 -41.8 -46.8 -51.5 -56.2 -62.4 -68.7 -74.4 -79.9 -85.7 -91.8 -95.0 -99.2 -102.5 Mag. .04 .03 .03 .04 .05 .07 .08 .10 .10 .11 .09 .09 .07 .04 .02 .05 .10 .12 .19 .22 .24 .30 Ang. -2.5 10.6 30.7 52.8 63.0 67.1 69.1 69.2 66.6 65.2 62.2 60.8 60.0 70.8 127.9 -178.2 -169.4 -178.5 -168.0 165.6 166.9 163.4 Typical Scattering Parameters, OFF Switch Port, ZO = 50 , TA = 25C, VC = -5 V Freq. GHz 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 Mag. .05 .05 .06 .09 .11 .13 .14 .15 .16 .16 .17 .17 .18 .16 .14 .11 .06 .08 .13 .18 .22 .27 S11 Ang. 5.6 20.6 36.0 39.3 35.8 30.9 25.0 18.9 14.5 10.6 7.8 3.0 -2.9 -9.2 -19.6 -33.2 -78.5 -156.7 -153.0 134.3 129.6 128.9 dB -50.0 -40.0 -35.0 -31.9 -30.5 -28.0 -28.0 -24.4 -23.1 -21.9 -20.0 -19.2 -17.7 -16.5 -14.9 -14.0 -12.0 -10.5 -11.1 -11.7 -10.8 -9.9 S21 Mag. 0 .01 .02 .03 .03 .04 .05 .06 .07 .08 .10 .11 .13 .15 .18 .20 .25 .30 .28 .26 .29 .32 Ang. 92.1 94.2 98.1 100.9 103.9 103.6 107.5 107.0 108.5 105.9 105.3 105.4 103.9 102.1 98.5 97.6 88.8 79.5 70.0 68.9 72.1 72.0 7-159 dB -44.4 -38.4 -35.4 -32.4 -30.5 -28.4 -26.4 -24.7 -23.0 -21.6 -19.9 -18.8 -16.9 -15.7 -13.9 -12.2 -10.3 -8.4 -10.3 -8.6 -7.8 -6.8 S12 Mag. .006 .012 .017 .024 .030 .038 .048 .058 .071 .083 .101 .115 .143 .165 .202 .246 .307 .379 .306 .370 .407 .458 S22 Ang. 92.4 95.2 100.3 104.4 108.5 110.4 116.2 116.8 119.6 118.0 118.6 119.8 120.4 119.3 116.4 115.5 105.1 89.9 77.4 88.3 85.3 83.0 Mag. .81 .82 .83 .83 .85 .86 .87 .89 .90 .92 .92 .95 .95 .98 .99 1.01 1.00 .91 .94 1.26 1.33 1.45 Ang. 176.3 172.6 168.9 165.3 161.6 158.3 154.9 151.9 148.6 146.7 145.0 143.1 141.7 141.2 140.6 139.6 139.0 140.4 146.5 142.8 133.7 131.6 SO-8 Package Dimensions 1.27 (.050) 6x 3.80/4.00 (.1497/.1574) 5.84/6.20 (.230/.244) Pin 1 1.35/1.75 (.0532/.0688) 4.72/5.00 (.186/.197) 0.38 0.10 (.015 .004) x 45 0/8 0.10 (.004) 0.33/0.51 (.013/.020) 8X 0.10/0.25 (.004/.0098) 0.41/1.27 (.016/.050) 0.19/0.25 (.0075/.0098) Note: 1. Dimensions are shown in millimeters (inches). 7-160 |
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