Preliminary Hyperabrupt Junction Tuning Varactor SMV1763-079 Features ■ Low Series Resistance ■ High Capacitance Ratio at Low Reverse Voltage ■ Ultra Small SC-79 Package ■ Designed for High Volume, Low Cost Battery Applications ■ Available in Tape and Reel Packaging Description The SMV1763-079 is a silicon hyperabrupt junction varactor diode specifically designed for 3 V platforms.The specified high capacitance ratio and low RS of this varactor make it attractive for low phase noise VCOs in wireless systems up to and 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 Value Forward Current (IF) 20 mA Power Dissipation (PD) 250 mW Storage Temperature (TST) -55°C to +150°C Operating Temperature (TOP) -55°C to +125°C Electrical Specifications at 25°C Parameter Condition Min. Typ. Reverse Current (IR) VR = 8 V Capacitance (CT) CT @ 0.5 V, VR = 0.5 V, F = 1 MHz 6.2 6.7 Capacitance (CT) CT @ 2.5 V, VR = 2.5 V, F = 1 MHz 2.3 2.6 Capacitance Ratio (CTR) CT (0.5 V)/CT (2.5 V) 2.3 2.5 Series Resistance (RS) VR = 1 V, F = 900 MHz Breakdown Voltage (VBR) IR = 10 µA 0.5 Max. Unit 20.0 nA 7.2 pF 2.9 pF 0.7 Ω 10.0 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/99A V 1 Hyperabrupt Junction Tuning Varactor SMV1763-079 Typical Performance Data Capacitance vs. Voltage Capacitance (pF) 10.0 VR (V) CT (pF) 0.0 9.0 0.5 6.7 1.0 5.2 1.5 4.0 2.0 3.2 2.5 2.6 3.0 2.2 3.5 2.0 4.0 1.9 4.5 1.8 5.0 1.8 8.0 6.0 4.0 2.0 0 0 1 2 3 4 5 Varactor Voltage (V) Capacitance vs. Voltage SPICE Model Percentage of Variation (%) 5 4 PORT P_anode port = 1 VVAR = 1 V 3 IND LS L = LS VVAR = 2.5 V 2 1 0 VVAR = 4 V -1 RES RS R = RS -2 -3 -4 -40 -20 0 20 40 60 80 Temperature (˚C) CAP CP C = CP DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear Relative Capacitance Change vs. Temperature 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 CJ0 (pF) VJ (V) M CP (pF) RS Ω) (Ω LS (nH) SMV1763-079 8.2 15 9.5 0.67 0.5 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. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 10˚ MAX. 2 DIODEM Diode_Model IS = 1.00e-14 RS = 0 N=1 TT = 0 CJO = CJO M=M 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 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 10/99A