Hyperabrupt Junction Tuning Varactor L t Alpha 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 Rg 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. SMV1269-074 Absolute Maximum Ratings Characteristic Value Forward Current (IF) 20 mA Power Dissipation (Pp) 250 mW Storage Temperature (Ts7) -55C to +150C Operating Temperature (Top) -55C to +125C Electrical Specifications at 25C Parameter Condition Min. Typ. Max. Unit Reverse Current (Ip) VR=8V 20.0 nA Capacitance (Cr) C7 @O.5V,VR=0.5V, F=1 MHz 19.2 20.5 21.8 pF Capacitance (Cr) Cy @2.5V, VR=2.5V, F=1 MHz 6.5 7.3 8.1 pF Capacitance Ratio (CyR) Cy (0.5 V)/Cz (2.5 V) 2.5 2.8 Series Resistance (Rs) Vr = 1 V, F = 900 MHz 0.6 0.8 Breakdown Voltage (VBR) IR = 10 pA 10.0 Vv Common Cathode Configuration A x BE Alpha Industries, Inc. [781] 935-5150 + Fax [617] 824-4579 + Email sales@alphaind.com + www.alphaind.com Specifications subject to change without notice. 10/99AHyperabrupt Junction Tuning Varactor Typical Performance Data 30 25 c \ & 20 oO 2 @ 15 oO oO g 10 NJ oO ww 5 SJ 0 > 0 1 2 3 4 5 Voltage (V) Alpha Varactor (SMV1269-074) Percent of Variation (%) -40 = =-20 0 20 40 60 80 Temperature (C) Relative Capacitance Change vs. Temperature 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. 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 ie a 0.026 (0.65 mm) REF. 0.051 (1.30 mm) REF. 0.031 (0.80 mm) MIN. 0.039 (1.00 mm) MAX. 2 0.014 (0.35 mm) REF. 0.004 (0.10 mm) MIN. 0.007 (0.18 mm) MAX. | el Le 0.004 (0.10 mm) MIN. 0.012 (0.30 mm) MAX. 0.000 (0.00 mm) MIN. 4 0.004 (0.10 mm) MAX. Capacitance vs. Voltage Vr) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 18 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 42 44 4.6 48 5.0 SPICE Model PORT P_anode port = 1 RES Rs R=Rs CAP L Cp DIODE pF C=Cp Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear PORT P_Cathode port =2 SMV1269-074 DIODEM Diode_Model Is = 1.00e-14 Rs =0 N=1 Tr=0 Cio =Cu0 M=M Eg=1.11 Xn=3 Kp =0 Ap =1 Fo =0.5 By=0 Iby = 1e-3 Isp =O Na=2 Part Cyo Vy Cp Number (pF) | (V) M | (pF) Rs Ls () | (nH) SMV1269-074 | 28.5 6.3 4.2 0.5 0.6 1.4 Specifications subject to change without notice. 10/99A Alpha Industries, Inc. [781] 935-5150 + Fax [617] 824-4579 + Email sales@alphaind.com + www.alphaind.com