the LGE433A is a true one- port surface- acoustic- wave( saw) re sonator in a low- profile qcc4a case. it provides reliable fundamental- mode quartz frequency stabilization of fixed- frequency transmitters operating at 433.92 mhz. 1. package dimension (qcc4a) 2. marking 3. equivalent lc model and test circuit lge r433a color: black or blue 4. typical application circuit 1) typical low-power transmitter application 2) typical local oscillator application 5. typical frequency response 6.temperature characteristics pin connection 1 input / output 3 output / input 2/4 case ground sign data(unit: mm) a 1.2 b 0.8 c 0.5 d 1.4 e 5.0 f 3.5 LGE433A saw resonator
7. performance 7-1.maximum ratings rating value units cw rf power dissipation p 0 dbm dc voltage between terminals v dc 30 v storage temperature range t stg -40 to +85 operating temperature range t a -40 to +85 7-2.electronic characteristics characteristic sym minimum typical maximum units center frequency (+25 ) absolute frequency f c 433.845 433.995 mhz tolerance from 433.920 mhz ? f c 75 khz insertion loss i l 1.5 1.8 db quality factor unloaded q q u 11274 50 ? loaded q q l 1800 temperature stability turnover temperature t o 25 40 55 turnover frequency f o fc khz frequency temperature coefficient ftc 0.037 ppm/ 2 frequency aging absolute value during the first year |f a | 10 ppm/yr dc insulation resistance between any two pins 1.0 m ? rf equivalent rlc model motional resistance r m 19 23 ? motional inductance l m 78.605 h motional capacitance c m 1.7132 ff pin 1 to pin 2 static capacitance c o 1.9 pf caution: electrostatic sensitive device. observe precautions for handling! notes: 1. the center frequency, f c , is measured at the minimum il point with the resonator in the 50 ? test system. 2. unless noted otherwise, case temperature t c = +25c2c. 3. frequency aging is the change in f c with time and is specified at +65c or le ss. aging may exceed the specification for prolonged temperatures above +65c. typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 4. turnover temperature, t 0 , is the temperature of maximum (or turnover) frequency, f 0 . the nominal frequency at any case temperature, t c , may be calculated from: f = f 0 [1 - ftc (t 0 - t c ) 2 ]. 5. this equivalent rlc model approxim ates resonator performance near the resonant frequency and is provided for reference only. the capacitance c 0 is the measured static ( nonmotional) capacitance between the two terminals. the measurement includes case parasitic capacitance. 6. derived mathematically from one or more of the following directly measured parameters: f c , i l , 3 db bandwidth, f c versus t c , and c 0 . 7. the specifications of th is device are based on the test circuit show n above and subject to change or obsolescence without notice. 8. typically, equipment utilizing this device requires em issions testing and government approval, which is the responsibility of the equipment manufacturer. 9. our liability is only assumed for the surface acousti c wave (saw) component(s) per se, not for applications, processes and circuits implemented within components or assemblies. 10. for questions on technology, prices and delivery please contact our sales offices or e-mail : LGE433A saw resonator
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