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RO3104A Datasheet(PDF) 1 Page - Murata Manufacturing Co., Ltd. |
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RO3104A Datasheet(HTML) 1 Page - Murata Manufacturing Co., Ltd. |
1 / 2 page ![]() www.RFM.com E-mail: info@rfm.com Page 1 of 2 © 2009-2011 by RF Monolithics, Inc. RO3104A - 6/28/11 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Frequency, +25 °C Nominal Frequency fC 2, 3, 4, 5 303.750 303.900 MHz Tolerance from 303.825 MHz ∆fC ±75 kHz Insertion Loss IL 2, 5, 6 1.5 2.0 dB Quality Factor Unloaded Q QU 5, 6, 7 11,000 50 Ω Loaded Q QL 1,460 Temperature Stability Turnover Temperature TO 6, 7, 8 10 25 40 °C Turnover Frequency fO fC Frequency Temperature Coefficient FTC 0.032 ppm/°C2 Frequency Aging Absolute Value during the First Year |fA| 1, 6 10 ppm/yr DC Insulation Resistance between Any Two Terminals 5 1.0 M Ω RF Equivalent RLC Model Motional Resistance RM 5, 6, 7, 9, 15.4 Ω Motional Inductance LM 88.4 µH Motional Capacitance CM 3.1 fF Transducer Static Capacitance CO 5, 6, 9 3.3 pF Test Fixture Shunt Inductance LTEST 2, 7 82 nH Lid Symbolization 662 // YWWS • Ideal for 303.825 MHz Transmitters • Very Low Series Resistance • Quartz Stability • Surface-mount Ceramic Case • Complies with Directive 2002/95/EC (RoHS) The RO3104A 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 fixed-frequency transmitters operating at 303.825 MHz. This SAW is designed specifically for AM transmitters in wireless security and remote control applications. Absolute Maximum Ratings Rating Value Units CW RF Power Dissipation (See Typical Test Circuit) 0 dBm DC Voltage Between Terminals (Observe ESD Precautions) ±30 VDC Case Temperature -40 to +85 °C Soldering Temperature (10 seconds / 5 cycles maximum) 260 °C 303.825 MHz SAW Resonator RO3104A CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. Frequency aging is the change in fC with time and is specified at +65 °C or less. Aging may exceed the specification for prolonged temperatures above +65 °C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 2. The center frequency, fC, is measured at the minimum insertion loss point, ILMIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The shunt inductance, LTEST, is tuned for parallel resonance with CO at fC. Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the resonator fC. 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 the responsibility of the equipment manufacturer. 5. Unless noted otherwise, case temperature TC =+25 ± 2 °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: fC, IL, 3 dB bandwidth, fC versus TC, and CO. 8. Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO. The nominal frequency at any case temperature, TC, may be calculated from: f = fO [1 - FTC (TO -TC) 2]. Typically oscillator T O is approximately equal to the specified resonator TO. 9. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance CO 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: CP ≈ CO -0.05pF. 10. Tape and Reel standard per ANSI / EIA 481. SM5035-4 Case Pb |
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