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| Low-Voltage / High Q Si Hyperabrupt Varactors MA4ST200 Series MA4ST200 Series Low-Voltage / High Q Si Hyperabrupt Varactors Features * * * * * * * Surface Mount Packages (SOT-23, SOT-323, SOD-323) High Q at Low Voltages High Capacitance Ratio at Low Voltages SPC Process for Superior C-V Repeatability Available as Single and Common Cathode Pairs Tape and Reel Packaging Designed for Commercial Wireless Applications Configurations TOP VIEW (SOT-23, SOT-323) Description M/A-COM's MA4ST200 series is a ion-implanted, hyperabrupt junction, silicon tuning varactors in SOT-23, SOT-323, and SOD323 surface mount packages. This series of varactors is designed for high Q and low voltage operation. Each varactor type has a Q greater than 400 at -2 V. Single TOP VIEW (SOD-323) Double Applications The MA4ST200 series tuning varactors are useful for wide band tuning and low phase noise applications where the supply voltage is limited to 5 volts or less. These varactors have been specifically designed for use in the wireless communications up to the 2.4 GHz band. Applications include VCOs and voltage tuned filters. Spice Model Intrinsic Diode Model: N = 1.1 CJ0=(see table below) VJ = (see table below) FC = 0.5 BV = 12.0 V M = (see table below) Rs TYPICAL DEVICE SELECTION by FREQUENCY 230 240 250 Cp Package Parasitics Cj Parasitics: Cp= 0.15 pF Ls= 0.10 nH Ls $FWLYH3DJHUV &7 605 3'& *60 ,6 107 107 7$&6 $036 3&6 *36 '&6 3+3 '(&7 :/$1 Part No. MA4ST230 2.0 3.0 CJO (pF) 12.0 8.16 6.19 VJ (V) 4.085 4.930 4.774 M 2.228 2.520 2.458 -&7 0.25 0.5 0.75 1.0 FREQUENCY (GHz) MA4ST250 MA4ST250 M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. Low-Voltage / High Q Si Hyperabrupt Varactors MA4ST200 Series Electrical Specifications @ TA = +25C Breakdown Voltage @ IR = 10 A, Vb = 12 V Minimum Reverse Leakage Current @ VR = 10 V, IR = 100 nA Maximum CT (pF) f = 1 MHz, VR = 2.0V Min. Nom. Max. 4.5 3.0 2.3 5.0 3.5 2.7 6.0 4.2 3.5 CT (pF) f = 1 MHz, VR = 4.0V Max. 3.1 2.3 1.8 Capacitance Ratio CT-0.5/CT-4.0 Typ. 3.5 3.5 3.5 Q Factor f = 50 MHz, VR = 2.0V Min. 400 450 450 Part Number MA4ST230 MA4ST240 MA4ST250 Absolute Maximum Rating Parameter Reverse Voltage Forward Current Total Power Dissipation Junction Operating Temp. Storage Temperature Absolute Maximum 12 Volts 50 mA 250 mW -55C to +125C -55C to +125C Typical Performance Curves TOTAL CAPACITANCE vs REVERSE VOLTAGE at 1 MHz TOTAL CAPACITANCE (pF) 100 MA4ST230 10 NOMINAL Q at 50 MHz vs REVERSE VOLTAGE 1.00E+03 NOMINAL Q MA4ST240 M A4ST250 M A4ST240 M A4ST230 1 MA4ST250 0.1 0.1 1 REVERSE VOLTAGE (V) 10 1.00E+02 1.00E-01 1.00E+00 REVERSE VOLTAGE (V) 1.00E+01 NOMINAL CHANGE in CAPACITANCE with TEMPERATURE 700 600 TCC(PPM/C) 500 400 300 200 0 2 4 REVERSE VOLTAGE (V) 6 8 Ordering Information These varactors are available in the three case styles shown. When ordering, specify the desired case style by adding the case designation (287 for SOT-23, 1146 for SOT-323, 1141 for SOD-323) as a suffix to the model number. For example, MA4ST230-1141 specifies the MA4ST230 varactor in the SOD-323 package. The model number indicated is for a single varactor. Common cathode pairs are available in SOT-23 package, and are specified by adding "CK" to the end of the model number. For example MA4ST230CK-287 specifies the MA4ST230 varactor in common cathode pairs. M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. Low-Voltage / High Q Si Hyperabrupt Varactors MA4ST200 Series Case Styles SOT-23 Case Style 287 F D A N SOT-23 (Case Style 287) DIM. A B C D E F G H J K L DIM. M N INCHES MIN. MAX. 0.048 0.008 0.040 0.013 0.020 0.003 0.006 0.110 0.119 0.047 0.056 0.037 typical 0.075 typical 0.103 0.024 GRADIENT 1 10 max. 2 . . . 30 MILLIMETERS MIN. MAX. 1.22 0.20 1.00 0.35 0.50 0.08 0.15 2.80 3.00 1.20 1.40 0.95 typical 1.90 typical 2.60 0.60 Note: 1. Applicable on all sides. M G B K L H J C E SOT-323 Case Style 1146 A E J H SOT-323 (Case Style 1146) DIM. A B C D E F G H J MIN. 0.063 0.045 0.079 0.047 0.008 0.031 0.003 0.004 INCHES MAX. 0.087 0.053 0.087 0.055 0.016 0.039 0.004 0.006 0.010 MILLIMETERS MIN. MAX. 1.6 2.2 1.15 1.35 2.0 2.2 1.2 1.4 0.2 0.4 0.8 1.0 0.1 0.08 0.15 0.1 0.25 10 M A X . C B G F D SOD-323 Case Style 1141 SOD-323 (Case Style 1141) C F D G E H B A DIM. A B C D E F G H INCHES MIN. MAX. 0.043 0.004 0.008 0.010 0.016 0.003 0.006 0.063 0.075 0.045 0.057 0.091 0.106 MILLIMETERS MIN. MAX. 1.1 0.1 0.2 0.25 0.4 0.08 0.15 1.6 1.9 1.15 1.45 2.3 2.7 M/A-COM Division of AMP Incorporated Q North America: Tel. (800) 366-2266, Fax (800) 618-8883 Q Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087 Q Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 www.macom.com AMP and Connecting at a Higher Level are trademarks. Specifications subject to change without notice. |
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