RP1103 • Ideal for 924.5 MHz Oscillators and Transmitters • Quartz Stability • Rugged, Hermetic, Low Profile TO-39 Case 924.5 MHz SAW Resonator The RP1103 is a 2-port surface acoustic wave (SAW) resonator that provides reliable quartz frequency stabilization of fixed frequency oscillators and transmitters at 924.5 MHz. This fundamental mode resonator is designed specifically for use in low-power transmitters operating in the United States under FCC Part 15.249 regulations. It is also suitable for a variety of other oscillator applications. ABSOLUTE MAXIMUM RATINGS Rating Value Units +6 dBm ±30 VDC -40 to +85 °C CW RF Power Dissipation DC Voltage between any 2 pins (see note 9) Case Temperature (see note 4) TO39-3 Case ELECTRICAL CHARACTERISTICS Characteristic Center Frequency (+25°C) Absolute Frequency Relative to 924.500 MHz Insertion Loss Quality Factor Temperature Stability Sym Notes fc 1 ∆f c IL 1 Unloaded Q QU 2 50 Ω Loaded Q QL Turnover Temperature To Turnover Frequency Freq. Temp. Coefficient 2, 3 Minimum Typical Maximum Units 924.250 924.750 MHz ±250 kHz 11.1 15.0 dB 6,000 3,800 34 49 64 °C fo fc + 6 kHz FTC 0.037 ppm/°C2 < ±10 ppm/yr Frequency Aging 4 DC Insulation Resistance between any 2 pins 1.0 MΩ 2, 5 259 463 Ω RF Equivalent RLC Model Motional Resistance Rm Motional Inductance Lm 249.340 µH Motional Capacitance Cm 0.118860 fF Shunt Static Capacitance Co 1.1 1.4 1.7 pF Lid Symbolization (in addition to lot and/or date code) 5 RFM RP1103 Notes: (Unless noted otherwise, case temperature, Tc = +25°C ±2°C.) 1. f c is the frequency of minimum IL with the resonator in a 50 Ω test system with VSWR ≤ 1.2:1. 2. Derived mathematically from one or more of the following directly measured parameters: f c , IL, 3 dB bandwidth, f c vs. Tc , and Co . 3. 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 ]. (Note that oscillator To is typically 20°C less than specified resonator To .) 4. 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. 5. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. C o is the measured static (nonmotional) capacitance between pin 1 and ground or pin 2 and ground and includes case parasitic capacitance. 6. The design, manufacturing process, and specifications of this device are subject to change without notice. 7. One or more of the following U. S. Patents apply: 4,454,488 and 4,616,197. RFM® is a registered trademark of RF Monolithics, Inc. 8. Equipment utilitizing this device typically requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. 9. CAUTION: ELECTROSTATIC SENSITIVE DEVICE. Observe precautions for handling. RP1103.CHP-A-01-122094LHAC ÃRPBACK.CHP © 1994 RF Monolithics, Inc.