RO2023 • • • • Ideal for European 433.92 MHz Transmitters Low Series Resistance Quartz Stability Rugged, Hermetic, Low-Profile TO39 Case The RO2023 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 433.92 MHz. The RO2023-10 is designed specifically for remote-control and wireless security devices operating in Europe under ETSI I-ETS 300 220 and in Germany under FTZ 17 TR 2100. 433.97 MHz SAW Resonator 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 -40 to +85 °C Case Temperature TO39-3 Case Electrical Characteristics Characteristic Center Frequency at +25 °C Absolute Frequency Tolerance from 433.970 MHz Insertion Loss Quality Factor Temperature Stability Frequency Aging Sym fC Notes ∆fC 2, 3, 4, 5 IL 2, 5, 6 Unloaded Q QU 50 W Loaded Q QL Turnover Temperature TO Turnover Frequency fO Frequency Temperature Coefficient FTC Absolute Value during the First Year |fA| Motional Inductance LM Motional Capacitance CM Pin 1 to Pin 2 Static Capacitance CO 5, 6, 9 Transducer Static Capacitance CP 5, 6, 7, 9 LTEST 2, 7 Units 434.045 MHz ±75 kHz 4.8 dB 3,050 1 RM Maximum 8,600 22 Motional Resistance Test Fixture Shunt Inductance 3.4 6, 7, 8 5 Typical 433.895 5, 6, 7 DC Insulation Resistance between Any Two Pins RF Equivalent RLC Model Minimum 37 52 kHz 0.037 ppm/°C2 ≤10 ppm/yr 1.0 5, 7, 9 1.8 Lid Symbolization °C fc + 2.3 MΩ 55 57 Ω 168 196 µH 0.8 0.9 fF 2.1 2.4 pF 1.8 68.2 pF 70.8 nH RFM RO2023 CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes: 1. 2. 3. 4. 5. 6. 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. 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. One or more of the following United States patents apply: 4,454,488 and 4,616,197. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. Unless noted otherwise, case temperature TC = +25°C±2°C. The design, manufacturing process, and specifications of this device are subject to change without notice. 7. 8. 9. RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-9148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO. 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 TO is 20°C less than the specified resonator TO. 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 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 grund connected to either Pin 1 or Pin 2 and to the case), add approximately 0.25 pF to CO. E-mail: [email protected] http://www.rfm.com RO2023-100300 Page 1 of 2 433.97 MHz SAW Resonator Electrical Connections Temperature Characteristics Pin Bottom View Connection Pin 1 1 Terminal 1 2 Terminal 2 3 Case Ground Pin 2 The curve shown on the right accounts for resonator contribution only and does not include oscillator temperature characteristics. fC = f O , T C = T O 0 0 -50 -50 -100 -100 -150 -150 (f-fo ) / fo (ppm) This one-port, two-terminal SAW resonator is bidirectional. The terminals are interchangeable with the exception of circuit board layout. -200 -80 -60 -40 -20 Pin 3 -200 0 +20 +40 +60 +80 ∆T = TC - T O ( °C ) Typical Test Circuit The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO at FC. Equivalent LC Model The following equivalent LC model is valid near resonance: Electrical Test: 1 Ω 2 Ω 2 1 Network Analyzer Network Analyzer Co= Cp + 0.25 pF* Cp *Case Parasitics R 3 M L M C M 0.5 pF* 0.5 pF* 3 Power Test: P INCIDENT 50 Ω Source at P REFLECTED F C 1 Low-Loss Matching Network to 50 Ω Case Design C 3 G B 2 H CW RF Power Dissipation = -P P INCIDENT REFLECTED F E A Typical Application Circuits D (3 places) J (2 places) Typical Low-Power Transmitter Application: Modulation Input 200k Ω MPS-H10 +9VDC Millimeters 47 C1 1 L1 Min (Antenna) 2 C2 ROXXXX Bottom View Min Max 0.366 3.18 0.125 RF Bypass C 470 Typical Local Oscillator Application: Output +VDC C1 Max 9.30 B 3 Inches Dimensions A 1 45° 3.50 0.098 0.138 D 0.46 Nominal 0.018 Nominal E 5.08 Nominal 0.200 Nominal F 2.54 Nominal 0.100 Nominal G 2.54 Nominal 0.100 Nominal H J L1 2.50 1.02 1.40 0.040 0.055 +VDC 2 C2 ROXXXX Bottom View 3 RF Bypass RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-9148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: [email protected] http://www.rfm.com RO2023-100300 Page 2 of 2