GW SAW Resonator GWR433A The GWR433A is a true one-por tˈsurface-acoustic-wave (SAW) resonator in a low-profile TO-39 case. It provides reliableˈfundamental-modeˈquartz frequency stabilization of fixed-frequency transmitters operating at 433.92 MHz. 1.Package Dimension (TO-39) 2.Marking Pin Connection 1 Terminal1 2 Terminal2 3 Case Ground Dimensions Data (unit: mm) A 9.30±0.20 B 5.08±0.10 C 3.40±0.20 D 3±0.20̬5±0.20 E 0.45±0.20 3.Equivalent LC Model and Test Circuit GWR433A Color: Black or Blue 4.Typical Application Circuit 1) Telecontrol Circuitry 2) Local Oscillator Application 5.Typical Frequency Response 6.Temperature Characteristics Address:NO.120 Bldg,Jindi Industrial Estate,Futian District,Shenzhen,China. Tel:(86)755-26161582 Fax:(86)755-755-26160182 E-mail:[email protected] GW SAW Resonator GWR433A 7.Performance 7-1.Maximum Rating Rating Value Units +10 dBm f30V VDC -40 to +85 ć CW RF Power Dissipation DC Voltage Between Any Two Pins Case Temperature 7-2.Electronic Characteristics Characteristic Center Frequency (+25ć) Absolute Frequency Sym Minimum fC 433.845 Tolerance from 433.92 MHz Insertion Loss Typical Maximum Units 433.995 MHz f75 fC IL 1.5 Unloaded Q QU 12,500 50 QL 2,000 kHz 2.2 dB 55 ć Quality Factor Temperature Stability Loaded Q Turnover Temperature TO Turnover Frequency fO fc kHz FTC 0.037 ppm/ć2 fA İ10 ppm/yr Frequency Temperature Coefficient Frequency Aging Absolute Value during the First Year DC Insulation Resistance Between Any Two Pins RF Equivalent RLC Model 25 40 1.0 M Motional Resistance RM 19 29 Motional Inductance LM 120.311 H Motional Capacitance CM 2.1240 fF Pin 1 to Pin 2 Static Capacitance CO 2.1 pF CAUTION: Electrostatic Sensitive Device. Observe precautions for handling ! NOTES: 1.Frequency aging is the change in fC with time and is specified at +65 ć or less. Aging may exceed the specification for prolonged temperatures above +65 ć . Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 2.The center frequency, fC ,is the frequency of minimum IL with the resonator in the specified test fixture in a 50 test system with VSWR İ 1.2 : 1. Typically, foscillator or ftransmitter is less than the resonator fC. 3.Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. 4.Unless noted otherwise , case temperature TC=+25ćf2ć. 5.The design, manufacturing process, and specifications of this device are subject to change without notice. 6.Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC versus TC , and CO. 7.Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO, The nominal center frequency at any case temperature , TC, may be calculated from :f = fO˷1-FTC (TO-TC) 2 ˹ .Typically, oscillator TO is 20 ć less than the specified resonator TO. 8.This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only . The capacitance CO is the measured static ( nonmotional ) capacitance between either pin 1 and ground or pin 2 and ground .The measurement includes case parasitic capacitance with a floating case. For usual grounded case applications (with ground connected to either pin 1 or pin 2 and to the case), add approximately 0.25 pF to CO. Address:NO.120 Bldg,Jindi Industrial Estate,Futian District,Shenzhen,China. Tel:(86)755-26161582 Fax:(86)755-755-26160182 E-mail:[email protected]