SMV1705-079

Hyperabrupt Junction Tuning Varactor SMV1705-079 Features s Low Series Resistance s High Capacitance Ratio s Ultra Small Size SC-79 Package s Designed for High Volume, Low Cost Battery Applications s Available in Tape and Reel Packaging Description The SMV1705-079 is a silicon hyperabrupt junction varactor diode specifically designed for battery operation.The specified high capacitance ratio and low RS of this varactor make it appropriate for low noise VCOs used at frequencies in wireless systems to beyond 2.5 GHz. Applications include low noise and wideband UHF and VHF VCO for GSM, PCS, CDMA and analog phones. Absolute Maximum Ratings Characteristic Forward Current (IF) Power Dissipation (PD) Storage Temperature (TST) Operating Temperature (TOP) Value 20 mA 250 mW -55°C to +150°C -55°C to +125°C Electrical Specifications at 25°C Parameter Reverse Current (IR) Capacitance (CT) Capacitance (CT) Capacitance Ratio (CTR) Series Resistance (RS) Breakdown Voltage (VBR) VR = 8 V VR = 1 V, F = 1 MHz VR = 4 V, F = 1 MHz CT (1 V)/CT (4 V) VR = 1 V, F = 470 MHz IR = 10 µA 12.0 17.3 5.3 2.8 Condition Min. Typ. < 0.01 18.30 6.10 3.00 0.32 Ω V Max. 20.0 19.3 6.6 Unit nA pF pF Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 1/01A 1 Hyperabrupt Junction Tuning Varactor SMV1705-079 Typical Performance Data 35.0 30.0 Capacitance vs. Voltage VR (V) 0.0 0.5 CT (pF) 31.5 23.5 18.3 14.3 11.9 9.7 8.3 7.1 6.1 5.5 5.2 Capacitance (pF) 25.0 20.0 15.0 10.0 5.0 0 0 1.0 2.0 3.0 4.0 5.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Varactor Voltage (V) Capacitance vs. Voltage 5 SPICE Model VVAR = 1 V VVAR = 2.5 V VVAR = 4 V IND LS L = LS PORT P_anode port = 1 DIODEM Diode_Model IS = 1.00e-14 RS = 0 N=1 TT = 0 CJO = CJO M=M VJ EG = 1.11 XTI = 3 KF =0 AF =1 FC = 0.5 BV = 0 IBV = 1e-3 ISR = 0 NR = 2 IKF = 0 NBV = 1 IBVL = 0 NBVL = 1 TBV1 = 0 TNOM = 27 FFE = 1 Percent of Variation (%) 4 3 2 1 0 -1 -2 -3 -4 -40 -20 0 20 40 RES RS R = RS 60 80 Temperature (˚C) Relative Capacitance Change vs. Temperature DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear CAP CP C = CP SC-79 CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 1 2 PORT P_Cathode port = 2 Part Number SMV1705-079 CJO (pF) 31 VJ (V) 3 M 2 CP (pF) 0.5 RS (Ω) 0.32 LS (nH) 0.8 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.020 (0.50 mm) MIN. 0.028 (0.70 mm) MAX. 10˚ MAX. 10˚ MAX. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com Specifications subject to change without notice. 1/01A