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| GW SAW Resonator GWR433A The GWR433A is a true one-por t surface-acoustic-wave (SAW) resonator in a low-profile TO-39 case. It provides reliable fundamental-mode quartz frequency stabilization of fixed-frequency transmitters operating at 433.92 MHz. 1.Package Dimension (TO-39) Pin 1 2 3 Dimensions A B C D E Connection Terminal1 Terminal2 Case Ground Data (unit: mm) 9.300.20 5.080.10 3.400.20 30.20 50.20 0.450.20 2.Marking 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:guanwi@guanwi.com GW 7.Performance 7-1.Maximum Rating CW RF Power Dissipation Case Temperature SAW Resonator GWR433A Rating Value +10 30V -40 to +85 Units dBm VDC DC Voltage Between Any Two Pins 7-2.Electronic Characteristics Characteristic Center Frequency (+25 ) Insertion Loss Unloaded Q Quality Factor 50 Loaded Q QL TO fO FTC fA 1.0 RM LM CM CO 19 120.311 2.1240 2.1 29 H fF pF 25 2,000 40 fc 0.037 10 55 kHz ppm/ 2 Sym fC fC IL QU Minimum 433.845 Typical Maximum 433.995 Units MHz kHz Absolute Frequency Tolerance from 433.92 MHz 75 1.5 12,500 2.2 dB Turnover Temperature Temperature Stability Turnover Frequency Frequency Temperature Coefficient Frequency Aging Absolute Value during the First Year ppm/yr M DC Insulation Resistance Between Any Two Pins Motional Resistance RF Equivalent RLC Model Motional Inductance Motional Capacitance Pin 1 to Pin 2 Static Capacitance CAUTION: Electrostatic Sensitive Device. Observe precautions for handling ! NOTES: 1.Frequency aging is the change in fC with time and is specified at +65 or less. Aging may exceed the specification for prolonged temperatures above +65 . 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 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=+25 2. 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 less than the (TO-TC) 2 .Typically, oscillator TO is 20 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:guanwi@guanwi.com |
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