? rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 1 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. RO2166D-090503 electrical characteristics characteristic sym notes minimum typical maximum units frequency (+25 c) nominal frequency RO2166D f c 2, 3, 4, 5 857.575 857.725 mhz RO2166D-1 857.500 857.800 RO2166D-2 857.550 857.750 tolerance from 857.65 mhz RO2166D d f c 75 khz RO2166D-1 150 RO2166D-2 100 insertion loss il 2, 5, 6 1.1 2.0 db quality factor unloaded q q u 5, 6, 7 1086 50 w loaded q q l 8474 temperature stability turnover temperature t o 6, 7, 8 15 30 45 c turnover frequency f o f c khz frequency temperature coefficient ftc 0.032 ppm/c 2 frequency aging absolute value during the first year |fa| 1 10 ppm/yr dc insulation resistance between any two terminals 5 1.0 m w rf equivalent rlc model motional resistance r m 5, 6, 7, 9 14.6 w motional inductance l m 23 h motional capacitance c m 1.5 ff transducer static capacitance c o 5, 6, 9 2.1 2.3 3.0 pf test fixture shunt inductance l test 2, 7 15.3 nh lid symbolization (in addition to lot and/or date codes) 483 / ywws standard reel quantity reel size 7 inch 500 pieces / reel reel size 13 inch 3000 pieces / reel ? ideal for european 857.65 mhz transmitters ? very low series resistance ? quartz stability ? surface-mount ceramic case with 21 mm 2 footprint ? complies with directive 2002/95/ec (rohs) the RO2166D is a true one-port, surface-acoustic-wave (saw) resonator in a surface-mount ceramic case. it provides reliable, fundamental-mode, quartz frequency stabilization of local oscillators operating at 857.65 mhz. this saw is designed for 857.65 mhz superhet receivers with 10.7 mhz if. applications include remote-control and wireless security receivers operating under etsi-ets 300 220 in europe and under ftz 17 tr 2100 in germany. absolute maximum ratings rating value units cw rf power dissipation +0 dbm dc voltage between terminals 12 vdc case temperature -40 to +85 c soldering temperature (10 seconds / 5 cycles max.) 260 c 857.65 mhz saw resonator RO2166D RO2166D-1 RO2166D-2 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 in subse- quent years. 2. the center frequency, f c , is measured at the minimum insertion loss point, il min , with the resonator in the 50 w test system (vswr 1.2:1). the shunt inductance, l test , is tuned for parallel resonance with c o at f c . typically, f os- cillator 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 govern- ment approval, which is the 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, 3db bandwidth, f c versus t c , and c o . 8. turnover temperature, t o , is the temperature of maximum (or turnover) fre- quency, f o . the nominal frequency at any case temperature, t c , may be calcu- lated 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 reso- nant frequency and is provided for reference only. the capacitance c o is the static (nonmotional) capacitance between the two terminals measured at low frequency (10mhz) with a capacitance meter. the measurement includes para- sitic capacitance with "nc? pads unconnected. case parasitic capacitance is approximately 0.05pf. transducer parallel capacitance can by calculated as: c p ? c o -0.05pf. sm3838-6 case 3.8 x 3.8 pb
857.65 mhz saw resonator rf monolithics, inc. phone: (972) 233-2903 fax: (972) 387-8148 e-mail: info@rfm.com page 2 of 2 rfm europe phone: 44 1963 251383 fax: 44 1963 251510 http://www.rfm.com ?1999 by rf monolithics, inc. the stylized rfm logo are registered trademarks of rf monolithics, inc. RO2166D-090503 -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 d 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 cm equivalent lc mode l temperature characteristics the curve shown on the right accounts for resonator contribution only and does not include lc component temperature contributions . pin connection 1 nc 2 terminal 3 nc 4 nc 5 terminal 6 nc 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 indi- cates 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 w network analyzer to 50 w network analyzer 2 3 6 5 4 1 low-loss matching network to 50 w 50 w source at f c p incident p reflected 2 3 6 5 4 1 modulation input roxxxxc bottom view 200k w 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 w 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 b c d j e g h i case dimensions dimension mm inches min nom max min nom max a 3.60 3.80 4.0 0.14 0.15 0.16 b 3.60 3.80 4.0 0.14 0.15 0.16 c 1.00 1.20 1.40 0.04 0.05 0.055 d 0.95 1.10 1.25 0.037 0.043 0.05 e 2.39 2.54 2.69 0.090 0.10 0.110 g 0.90 1.0 1.10 0.035 0.04 0.043 h 1.90 2.0 2.10 0.75 0.08 0.83 i 0.50 0.6 0.70 0.020 0.024 0.028 j 1.70 1.8 1.90 0.067 0.07 0.075
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