www.rfm.com e-mail: info@rfm.com page 1 of 2 ?2008 by rf monolithics, inc. RO3101E-1 - 3/26/08 caution: electrostatic sensitive device. observe precautions for handling. notes: electrical characteristics characteristic sym notes minimum typical maximum units center frequency (+25 c) absolute frequency f c 2,3,4,5 433.870 433.970 mhz tolerance from 433.920 mhz f c 50 khz insertion loss il 2,5,6 1.4 2.2 db quality factor unloaded q q u 5,6,7 8280 50 loaded q q l 1228 temperature stability turnover temperature t o 6,7,8 10 25 35 c turnover frequency f o f c frequency temperature coefficient ftc 0.032 ppm/c 2 frequency aging absolute value during the first year |f a | 1 10 ppm/yr dc insulation resistance between any two terminals 5 1.0 m rf equivalent rlc model motional resistance r m 5, 7, 9 17.5 motional inductance l m 53.5 h motional capacitance c m 2.5 ff shunt static capacitance c o 5, 6, 9 2.5 pf test fixture shunt inductance l test 2, 7 53.2 nh lid symbolization (in addition to lot and/or date codes) 750 // ywws standard reel quantity reel size 7 inch 10 500 pieces/reel reel size 13 inch 3000 pieces/reel ? ideal for european 433.92 mhz transmitters ? very low series resistance ? quartz stability ? complies with directive 2002/95/ec (rohs) the RO3101E-1 is a true one-port, surf ace-acoustic-wave (saw) resonator in a surface-mount, ceramic case. it provides reliable, fundamental-mode, quartz fr equency stabilization of fixed-frequency transmitters operating at 433.92 mhz. this saw is designed specif ically for remote-control and wireless security transmitters operating in europe under etsi i-ets 300 220 and in germany under ftz 17 tr 2100. absolute maximum ratings rating value units input power level 0 dbm dc voltage 12 vdc storage temperature range -40 to +125 c operating temperature range -40 to +105 c soldering temperature (10 seconds / 5 cycles max.) 260 c 433.92 mhz saw resonator RO3101E-1 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 in subsequent years. 2. the center frequency, f c , is measured at the minimum insertion loss point, il min , with the resonator in the 50 test system (vswr 1.2:1). the shunt inductance, l test , is tuned for parallel resonance with c o at f c . typically, f oscillator or f transmitter is approximately equal to the resonator f c . 3. one or more of the following united states patents apply: 4,454,488 and 4,616,197. 4. typically, equipment utilizing this device requires emissions testing and government approval, which is th e responsibility of the equipment manufacturer. 5. unless noted otherwise, case temperature t c = +25c2c. 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 approximately equal to 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 static (nonmotional) capacitance between the two terminals measured at low frequency (10 mhz) with a capacitance meter. the measurement includes parasitic capacitance with "nc? pads unconnected. case parasitic capacitance is approximately 0.05 pf. transducer parallel capacitance can by calculated as: c p c o -0.05pf. 10. tape and reel standard per ansi / eia 481. sm3030-6 case 3.0 x 3.0 pb
www.rfm.com e-mail: info@rfm.com page 2 of 2 ?2008 by rf monolithics, inc. RO3101E-1 - 3/26/08 -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) 0.05 pf* 0.05 pf c p c o + = *case parasitics c p rm lm c m equivalent lc model temperature characteristics the curve shown on the right accounts for resonator contribution only and does not include lc component temperature contributions. pin connection 1nc 2 terminal 3nc 4nc 5 terminal 6nc power test electrical connections the saw resonator is bidirectional and may be installed with either orientation. the two terminals are interchangeable and unnumbered. the callout nc indicates no internal connection. the nc pads assist with mechanical positioning and stability. external grounding of the nc pads is recommended to help reduce parasitic capacitance in the circuit. typical test circuit the test circuit inductor, l test , is tuned to resonate with the static capacitance, c o , at f c . electrical test typical application circuits from 50 network analyzer to 50 network analyzer 2 3 6 5 4 1 low-loss matching network to 50 50 source at f c p incident p reflected 2 3 6 5 4 1 modulation input roxxxxc bottom view 200k c1 l1 (antenna) 47 +9vdc c2 rf bypass 470 typical low-power transmitter application 2 3 6 5 4 1 +vdc roxxxxc bottom view 200k c1 l1 +vdc c2 rf bypass typical local oscillator application output 2 3 6 5 4 1 1 2 3 6 5 4 1 2 3 6 5 4 a bc d j ef gh i case dimensions dimension mm inches min nom max min nom max a 2.87 3.0 3.13 0.113 0.118 0.123 b 2.87 3.0 3.13 0.113 0.118 0.123 c 1.12 1.25 1.38 0.044 0.049 0.054 d 0.77 0.90 1.03 0.030 0.035 0.040 e 2.67 2.80 2.93 0.105 0.110 0.115 f 1.47 1.6 1.73 0.058 0.063 0.068 g 0.72 0.85 0.98 0.028 0.033 0.038 h 1.37 1.5 1.63 0.054 0.059 0.064 i 0.47 0.60 0.73 0.019 0.024 0.029 j 1.17 1.30 1.43 0.046 0.051 0.056
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