www.rfm.com e-mail: info@rfm.com page 1 of 2 ?2008 by rf monolithics, inc. RP1104 - 12/11/08 electrical characteristics characteristic sym notes minimum typical maximum units center frequency absolute frequency f c 2, 3, 4, 5, 824.100 824.400 mhz tolerance from 824.250 mhz ? f c 150 khz insertion loss il 2, 5, 6 9.0 9.5 db quality factor unloaded q q u 5, 6, 7 6,200 50 ? loaded q q l 4,000 temperature stability turnover temperature t o 6, 7, 8 50 65 80 c turnover frequency f o f c +96 khz frequency temp. coefficient ftc 0.037 ppm/c 2 frequency aging absolute value during first year |f a | 6 10 ppm/yr dc insulation resistance between any two pins 5 1.0 m ? rf equivalent rlc motional resistance r m 5, 7, 9 175 ? motional inductance l m 210 h motional capacitance c m 0.2 ff shunt static capacitance c o 5, 6, 9 1.4 pf lid symbolization (in addition to lot and/or date codes) rfm p1104 to39-3 case ? ideal for 824 mhz oscillators nominal insertion phase shift of 180 at resonance quartz stability rugged, hermetic, low-profile to39 case complies with directive 2002/95/ec (rohs) the RP1104 is a two-port, 180 surface-acoustic-wave (saw) resonator in a low-profile to39 case. it pro- vides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency oscillators operating at or near 824.05 mhz. the nominal resonator frequency is higher than the nominal oscillator frequency to allow for production frequency tuning. this saw is designed specifically for stabilization of the second lo of catv convertors with channel 13 outputs for use in taipei. in this application, the oscillator must be a modified-col- pitts design with the saw connected to simulate a one-port saw. absolute maximum ratings rating value units cw rf power dissipation (see: typical test circuit) +5 dbm dc voltage between any two pins (observe esd precautions) 30 vdc case temperature -40 to +85 c soldering temperature (10 seconds/5 cycles maximum) 260 c 824.25 mhz saw resonator RP1104 caution: electrostatic sensitive device. observe precautions for handling. notes: 1. frequency aging is the change in f c with time and is specified at +65c or less. aging may exceed the specification for prolonged temperatures above +65c. typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years. 2. the frequency f c 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, f oscillator or f transmitter is less than the resonator f c . 3. one or more of the following united states patents apply: 4,454,488; 4,616,197. 4. typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufac- turer. 5. unless noted otherwise, case temperature t c = +25c 5c 6. the design, manufacturing process, and specifications of this device are subject to change without notice. 7. derived mathematically from one or more of the following directly measured parameters: f c , il, 3 db bandwidth, f c versus t c , and c o . 8. turnover temperature, t o , is the temperature of maximum (or turnover) frequency, f o . the nominal frequency at any case temperature, t c , may be calculated from: f = f o [1 - ftc (t o - t c ) 2 ]. typically, oscillator t o is 20 less than the specified resonator t o . 9. this equivalent rlc model approximates resonator performance near the resonant frequency and is provided for reference only. the capacitance c o is the measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. the measurement includes case parasitic capacitance. pb
824.25 mhz saw resonator www.rfm.com e-mail: info@rfm.com page 2 of 2 ?2008 by rf monolithics, inc. RP1104 - 12/11/08 electrical connections this two-port, three-terminal saw resonator is bidirectional. however, im- pedances and circuit board parasitics may not be symmetrical, requiring slightly different oscillator component-matching values. typical test circuit typical application circuits case design equivalent lc model temperature characteristics typical frequency response pin connection 1 input or output 2 output or input 3 case ground bottom view pin 1 pin 2 pin 3 50 ? source at f c low-loss matching network 50 ? to power test p p incident incident w rf power dissipation = - reflected reflected p p 1 3 2 2 3 1 f rom 50 network analyzer ? t o 50 network a nalyzer ? electrical test this saw resonator can be used in oscillator or transmitter designs that require 180 phase shift at resonance in a two-port configuration. one- port resonators can be simulated, as shown, by connecting pins 1 and 2 together. however, for most low-cost consumer products, this is only recommended for retrofit applications and not for new designs. phasing & match phasing & match 1 2 3 conventional two-port design: simulated one-port design: b 45 j (2 places) d (3 places) h g e f c a dimensions millimeters inches min max min max a 9.40 0.370 b 3.18 0.125 c 2.50 3.50 0.098 0.138 d 0.46 nominal 0.018 nominal e 5.08 nominal 0.200 nominal f 2.54 nominal 0.100 nominal g 2.54 nominal 0.100 nominal h 1.02 0.040 j 1.40 0.055 c m c o c o r m l m 1 2 3 the following equivalent lc model is valid near resonance: -80 -60 -40 -20 0 +20 +40 +60 0 -50 - 100 - 150 +80 - 200 0 -50 -100 -150 -200 f c = f o , t c = t o ? t = t c - t o ( c ) (f-f o o ) / f (ppm) the curve shown on the right accounts for resonator con- tribution only and does not include lc component tem- perature contributions. the plot shown below is a typical frequency response for the rp series of two-port resonators. the plot is for rp1094. -10.0 -20.0 -30.0 -40.0 -50.0 -60.0 200.0 100.0 0.0 -100.0 -200.0 -300.0 -400.0 -500.0 -600.0 -700.0 -800.0 901.2 905.2 909.2 913.2 917.2 921.2 925.2 929.2 frequency (mhz) s21 magn.(db) s21 phase (deg.)
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