RFM products are now Murata products. RO2043 Designed for 303.875 MHz SAW Resonator Low Series Resistance 303.875 MHz Quartz Stability Pb Rugged, Hermetic, Low-Profile TO39 Case SAW Complies with Directive 2002/95/EC (RoHS) Resonator The RO2043 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters operating at 303.825 MHz. The RO2043-1 is designed specitically for low-power AM transmitters on remote-control and wireless alarm applications operating in the USA under FCC Part15, in Japan, in Australia, in Korea, and elsewhere. Absolute Maximum Ratings Rating Value Units CW RF Power Dissipation +5 dBm DC Voltage Between Terminals (Observe ESD Precautions) 30 VDC Case Temperature -40 to +85 C TO39-3 Case Characteristic Sym Notes Minimum Typical Maximum Units Frequency (+25 C) Nominal Frequency f 303.775 303.975 MHz C 2, 3, 4, 5 f Tolerance from 303.875 MHz 100 kHz C Insertion Loss IL 2, 5, 6 4.8 7.0 dB Q Quality Factor Unloaded Q 11300 U 5, 6, 7 Q 50 Loaded Q 4600 L T Temperature Stability Turnover Temperature 37 52 67 C O f f +8.2 Turnover Frequency 6, 7, 8 kHz O C 2 Frequency Temperature Coefficient FTC 0.037 ppm/C Frequency Aging Absolute Value during the First Year fA 1, 6 10 ppm/yr DC Insulation Resistance between Any Two Pins 5 1.0 M R RF Equivalent RLC Model Motional Resistance 74 124 M L Motional Inductance 5, 6, 7, 9 437.961 H M Motional Capacitance C .626346 fF M Pin 1 to Pin 2 Static Capacitance C 5, 6, 9 1.5 1.8 2.1 pF O Transducer Static Capacitance C 5, 6, 7, 9 1.5 pF P Test Fixture Shunt Inductance L 2, 7 150 nH TEST Lid Symbolization (in addition to Lot and/or Date Codes) RFM RO2043 CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. Frequency aging is the change in f with time and is specified at +65C or less. Aging may exceed the specification for prolonged temperatures above +65C. C Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years. 2. The center frequency, f , is measured at the minimum insertion loss point, IL , with the resonator in the 50 test system (VSWR 1.2:1). The shunt C MIN inductance, L , is tuned for parallel resonance with C at f . Typically, f or f is less than the resonator f . TEST O C OSCILLATOR TRANSMITTER C 3. One or more of the following United States patents apply: 4,454,488 and 4,616,197 and others pending. 4. Typically, equipment designs utilizing this device require emissions testing and government approval, which is the responsibility of the equipment manufacturer. 5. Unless noted otherwise, case temperature T = +25C2C. C 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 , IL, 3 dB bandwidth, f versus T , and C . C C C O 8. Turnover temperature, T , is the temperature of maximum (or turnover) frequency, f . The nominal frequency at any case temperature, T , may be calculated O O C 2 from: f = f 1 - FTC (T -T ) . Typically, oscillator T is 20C less than the specified resonator T . O O C O O 9. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance C is the O static (nonmotional) capacitance between pin1 and pin 2 measured at low frequency (10 MHz) with a capacitance meter. 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 C . O 2010-2014 by Murata Electronics N.A., Inc. RO2043 (R) 3/24/14 Page 1 of 2 www.murata.comElectrical Connections This one-port, two-terminal SAW resonator is bidirectional. The terminals Temperature Characteristics are interchangeable with the exception of circuit board layout. Pin Connection Bottom View The curve shown on the right f = f , T = T C O C O 0 0 accounts for resonator Pin 1 1 Terminal 1 Pin 2 -50 contribution only and does not -50 2 Terminal 2 include oscillator temperature -100 -100 Pin 3 3 Case Ground characteristics. -150 -150 -200 -200 Typical Test Circuit -80-60 -40-20 0 +20 +40 +60 +80 The test circuit inductor, L , is tuned to resonate with the static TEST T = T - T ( C ) C O capacitance, C at F . O C Electrical Test: Equivalent LC Model The following equivalent LC model is valid near resonance: 2 1 Network Network 1 2 Analyzer Analyzer 3 C =C +0.25 pF* o p C p *Case Parasitics R L C MM M Power Test: 0.5 pF* 0.5 pF* 1 P INCIDENT Low-Loss 3 50 Matching Source at P REFLECTED Network F C to 50 3 2 Case Design - CW RF Power Dissipation = P P INCIDENT REFLECTED C G B Typical Application Circuits H F E A Typical Low-Power Transmitter Application: D (3 places) 200k MPS-H10 Modulation Input +9VDC J 47 (2 places) C1 45 L1 1 2 (Antenna) C2 ROXXXX Millimeters Inches 3 RF Bypass Bottom View Dimensions 470 Min Max Min Max A 9.40 0.370 Typical Local Oscillator Application: B 3.18 0.125 C 2.50 3.50 0.098 0.138 Output +VDC D 0.46 Nominal 0.018 Nominal C1 E 5.08 Nominal 0.200 Nominal L1 +VDC 1 2 F 2.54 Nominal 0.100 Nominal G 2.54 Nominal 0.100 Nominal C2 ROXXXX 3 Bottom View RF Bypass H 1.02 0.040 J 1.40 0.055 2010-2014 by Murata Electronics N.A., Inc. www.murata.com RO2043 (R) 3/24/14 Page 2 of 2 (f-f f (ppm) ) o / o