RoHS Compliance This component is compliant with RoHS directive. This component was always RoHS compliant from the first date of manufacture. RO3112 Ideal for European 433.92 MHz Superhet Receiver LOs Very Low Series Resistance 433.42 MHz Quartz Stability Rugged, Hermetic, Low-Profile TO39 Case SAW The RO3112 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 local oscillators operating at approximately Resonator 433.42 MHz. The RO2112 is designed for IC based 433.92 MHz superhet receivers with 500 kHz IF (Philips UAA3201T). Applications include remote-control and wireless security devices operating in Europe under ETSI I-ETS 300 220 and in Germany under FTZ 17 TR 2100. Absolute Maximum Ratings Rating Value Units CW RF Power Dissipation (See: Typical Test Circuit) +0 dBm DC Voltage Between Any Two Pins (Observe ESD Precautions) 30 VDC Case Temperature -40 to +85 C TO39-3 Case Soldering Temperature (10 seconds / 5 cycles max.) 260 C Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Center Frequency (+25 C) Absolute Frequency f 433.345 433.495 MHz C 2, 3, 4, 5 Tolerance from 433.420 MHz f 75 kHz C Insertion Loss IL 1.3 1.5 2, 5, 6 dB Quality Factor Unloaded Q Q 7500 U 5, 6, 7 50 Loaded Q Q 940 L Temperature Stability Turnover Temperature T 10 25 40 C O Turnover Frequency f 6, 7, 8 f kHz O c 2 Frequency Temperature Coefficient FTC 0.037 ppm/C Frequency Aging Absolute Value during the First Year f 1 ppm/yr A DC Insulation Resistance between Any Two Pins 5 1.0 M RF Equivalent RLC Model Motional Resistance R 14.5 M Motional Inductance L 5, 7, 9 39.6 H M Motional Capacitance C 3.4 fF M Pin 1 to Pin 2 Static Capacitance C 5, 6, 9 3.5 pF O Transducer Static Capacitance C 5, 6, 7, 9 3.2 pF P Test Fixture Shunt Inductance L 2, 7 39 nH TEST Lid Symbolization (in Addition to Lot and/or Date Codes) RFM RO3112 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 subject to change without notice. C 7. Derived mathematically from one or more of the following directly less. Aging may exceed the specification for prolonged temperatures measured parameters: f , IL, 3 dB bandwidth, f versus T , and C . above +65C. Typically, aging is greatest the first year after manufacture, C C C O decreasing significantly in subsequent years. 8. Turnover temperature, T , is the temperature of maximum (or turnover) O 2. The center frequency, f , is measured at the minimum insertion loss point, frequency, f . The nominal frequency at any case temperature, T , may be C O C IL , with the resonator in the 50 test system (VSWR 1.2:1). The 2 MIN calculated from: f = f 1 - FTC (T -T ) . Typically, oscillator T is 20C O O C O shunt inductance, L , is tuned for parallel resonance with C at f . TEST O C less than the specified resonator T . O Typically, f or f is less than the resonator f . OSCILLATOR TRANSMITTER C 9. This equivalent RLC model approximates resonator performance near the 3. One or more of the following United States patents apply: 4,454,488 and resonant frequency and is provided for reference only. The capacitance C O 4,616,197 and others pending. is the static (nonmotional) capacitance between pin1 and pin 2 measured 4. Typically, equipment designs utilizing this device require emissions testing at low frequency (10 MHz) with a capacitance meter. The measurement and government approval, which is the responsibility of the equipment includes case parasitic capacitance with a floating case. For usual manufacturer. grounded case applications (with ground connected to either pin 1 or pin 2 5. Unless noted otherwise, case temperature T = +25C2C. C and to the case), add approximately 0.25 pF to C . O 6. The design, manufacturing process, and specifications of this device are Copyright Murata Manufacturing Co., Ltd. All rights reserved. 2014 RO3112 (R) 10/30/18 Page 1 of 2 www.murata.comElectrical Connections Temperature Characteristics This one-port, two-terminal SAW resonator is bidirectional. The terminals The curve shown on the right f = f , T = T C O C O are interchangeable with the exception of circuit board layout. 0 0 accounts for resonator Bottom View -50 Pin Connection contribution only and does not -50 include oscillator temperature Pin 1 -100 -100 Pin 2 1 Terminal 1 characteristics. -150 -150 2 Terminal 2 Pin 3 -200 -200 3 Case Ground -80 -60 -40 -20 0 +20 +40 +60 +80 T = T - T ( C ) C O Typical Test Circuit The test circuit inductor, L , is tuned to resonate with the static TEST Equivalent LC Model capacitance, C at F . O C The following equivalent LC model is valid near resonance: Electrical Test: 1 2 C =C +0.25 pF* o p 2 1 Network Network C p Analyzer Analyzer *Case Parasitics R L C MM M 3 0.5 pF* 0.5 pF* 3 Power Test: Case Design 1 P INCIDENT Low-Loss C G 50 Matching B Source at P REFLECTED Network F C to 50 3 2 H F E A - CW RF Power Dissipation = P P INCIDENT REFLECTED D Typical Application Circuits (3 places) J Typical Low-Power Transmitter Application: (2 places) 45 200k MPS-H10 Modulation +9VDC Input Millimeters Inches 47 C1 Dimensions L1 1 Min Max Min Max 2 (Antenna) A 9.40 0.370 C2 ROXXXX 3 B 3.18 0.125 RF Bypass Bottom View C 2.50 3.50 0.098 0.138 470 D 0.46 Nominal 0.018 Nominal E 5.08 Nominal 0.200 Nominal Typical Local Oscillator Application: F 2.54 Nominal 0.100 Nominal G 2.54 Nominal 0.100 Nominal Output +VDC H 1.02 0.040 C1 L1 J 1.40 0.055 +VDC 1 2 C2 ROXXXX 3 Bottom View RF Bypass Copyright Murata Manufacturing Co., Ltd. All rights reserved. 2014 RO3112 (R) 10/30/18 Page 2 of 2 www.murata.com (ppm) (f-f f ) o / o