Hyperabrupt Junction Tuning Varactor SMV1269-074 Features ■ High Capacitance Ratio ■ Ultra Small Size SC-70 Package ■ Designed for High Volume, Low Cost Battery Applications ■ Available in Tape and Reel Packaging Description The SMV1269-074 is a dual silicon hyperabrupt junction varactor diode in a common cathode configuration 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 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 19.2 20.5 Capacitance (CT) CT @ 2.5 V, VR = 2.5 V, F = 1 MHz 6.5 7.3 Capacitance Ratio (CTR) Series Resistance (RS) CT (0.5 V)/CT (2.5 V) 2.5 2.8 Breakdown Voltage (VBR) IR = 10 µA VR = 1 V, F = 900 MHz 0.6 Max. Unit 20.0 nA 21.8 pF 8.1 pF 0.8 Ω 10.0 V Common Cathode Configuration Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 1 Hyperabrupt Junction Tuning Varactor SMV1269-074 Typical Performance Data Capacitance vs. Voltage 30 VR (V) 29.0 0.2 25.3 0.4 22.4 0.6 20.1 0.8 18.0 1.0 16.2 1.2 14.6 1.4 13.2 1.6 11.9 1.8 10.7 2.0 9.6 2.2 8.7 2.4 7.8 2.6 7.0 5 2.8 6.3 4 3.0 5.7 3.2 5.2 3.4 4.8 3.6 4.4 3.8 4.1 4.0 3.9 -1 4.2 3.7 -2 4.4 3.5 -3 4.6 3.3 -4 -40 4.8 3.2 5.0 3.1 Capacitance (pF) 25 20 15 10 5 0 0 1 2 3 4 5 Voltage (V) Alpha Varactor (SMV1269-074) Percent of Variation (%) CT (pF) 0 VVAR = 1 V 3 VVAR = 2.5 V 2 1 VVAR = 4 V 0 -20 0 20 40 60 80 Temperature (˚C) Relative Capacitance Change vs. Temperature SPICE Model PORT P_anode port = 1 IND LS L = LS SC-70 0.071 (1.80 mm) MIN. 0.087 (2.20 mm) MAX. 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. RES RS R = RS 3 0.071 (1.80 mm) MIN. 0.094 (2.40 mm) MAX. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 2 0.014 (0.35 mm) REF. 0.026 (0.65 mm) REF. CAP CP C = CP DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear 0.051 (1.30 mm) REF. 0.004 (0.10 mm) MIN. 0.007 (0.18 mm) MAX. 0.031 (0.80 mm) MIN. 0.039 (1.00 mm) MAX. PORT P_Cathode port = 2 0.004 (0.10 mm) MIN. 0.012 (0.30 mm) MAX. 2 0.000 (0.00 mm) MIN. 0.004 (0.10 mm) MAX. 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 Part Number CJO (pF) VJ (V) M CP (pF) RS Ω) (Ω LS (nH) SMV1269-074 28.5 6.3 4.2 0.5 0.6 1.4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A