RO3101A-1 Ideal for European 433.92 MHz Transmitters Very Low Series Resistance 433.92 MHz Quartz Stability Surface-Mount Ceramic Case Pb SAW Complies with Directive 2002/95/EC (RoHS) Resonator The RO3101A-1 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 433.92 MHz. This SAW is designed specifically for remote-control and wireless security transmitters 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 Terminals (Observe ESD Precautions) 30 VDC Case Temperature -40 to +85 C Soldering Temperature (10 seconds / 5 cycles max.) 260 C SM5035-4 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Center Frequency (+25 C) Absolute Frequency f 433.870 433.970 MHz C 2,3,4,5 Tolerance from 433.920 MHz f 50 kHz C Insertion Loss IL 2,5,6 1.5 2.2 dB Quality Factor Unloaded Q Q 9000 U 5,6,7 50 Loaded Q Q 1458 L Temperature Stability Turnover Temperature T 10 25 40 C O Turnover Frequency f 6,7,8 f O C 2 Frequency Temperature Coefficient FTC 0.032 ppm/C Frequency Aging Absolute Value during the First Year f 1 10 ppm/yr A DC Insulation Resistance between Any Two Terminals 5 1.0 M RF Equivalent RLC Model Motional Resistance R 19.4 M Motional Inductance L 5, 7, 9 63.8 H M Motional Capacitance C 2.11 fF M C Shunt Static Capacitance 5, 6, 9 2.4 pF O L Test Fixture Shunt Inductance 2, 7 55.1 nH TEST Lid Symbolization (in addition to Lot and/or Date Codes) 745 // YWWS 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 7. Derived mathematically from one or more of the following directly C measured parameters: f , IL, 3 dB bandwidth, f versus T , and C . less. Aging may exceed the specification for prolonged temperatures C C C O above +65C. Typically, aging is greatest the first year after manufacture, 8. Turnover temperature, T , is the temperature of maximum (or turnover) O decreasing in subsequent years. frequency, f . The nominal frequency at any case temperature, T , may be O C 2. The center frequency, f , is measured at the minimum insertion loss point, C 2 calculated from: f = f 1 - FTC (T -T ) . Typically oscillator T is O O C O IL , with the resonator in the 50 test system (VSWR 1.2:1). The MIN approximately equal to the specified resonator T . O shunt inductance, L , is tuned for parallel resonance with C at f . TEST O C 9. This equivalent RLC model approximates resonator performance near the Typically, f or f is approximately equal to the OSCILLATOR TRANSMITTER resonant frequency and is provided for reference only. The capacitance C O resonator f . C is the static (nonmotional) capacitance between the two terminals 3. One or more of the following United States patents apply: 4,454,488 and measured at low frequency (10 MHz) with a capacitance meter. The 4,616,197. measurement includes parasitic capacitance withNC pads unconnected. 4. Typically, equipment utilizing this device requires emissions testing and Case parasitic capacitance is approximately 0.05 pF. Transducer parallel government approval, which is the responsibility of the equipment capacitance can by calculated as: C C -0.05pF. P O manufacturer. 10. Tape and Reel standard per ANSI / EIA 481. 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. www.RFM.com E-mail: info rfm.com Page 1 of 2 2008 by RF Monolithics, Inc. RO3101A-1 - 3/26/08Electrical Connections Equivalent LC Model The SAW resonator is bidirectional and may be 0.05 pF* Terminal installed with either orientation. The two terminals + C = C 0.05 pF o p are interchangeable and unnumbered. The callout Cp NC indicates no internal connection. The NC pads *Case Parasitics assist with mechanical positioning and stability. External grounding of the NC pads is Terminal Rm Lm Cm recommended to help reduce parasitic capacitance in the circuit. Temperature Characteristics The curve shown on the right Typical Test Circuit f = f , T = T C O C O accounts for resonator 0 0 The test circuit inductor, L , is tuned to resonate with the static TEST contribution only and does not -50 -50 capacitance, C , at F . O C include LC component -100 -100 temperature contributions. -150 -150 ELECTRICAL TEST -200 -200 Typical Circuit Board -80 -60 -40 -20 0 +20 +40 +60 +80 Land Pattern T = T - T ( C ) C O From 50 To 50 The circuit board land pattern Network Analyzer Network Analyzer shown below is one possible design. The optimum land pattern is dependent on the circuit board assembly process which varies by manufacturer. The distance between adjacent land edges should be at a maximum to minimize parasitic capacitance. Trace lengths from terminal lands to other components should be short and wide to minimize parasitic series inductances. POWER TEST (4 Places) P INCIDENT Typical Dimension: Terminal Low-Loss 0.010 to 0.047 inch 50 Source Matching NC NC P (0.25 to 1.20 mm) at F Network to C REFLECTED 50 Terminal Case Design Top View Side View Bottom View P P CW RF Power Dissipation = INCIDENT - REFLECTED B C E (3x) Typical Application Circuits Typical Low-Power Transmitter Application 4 +9VDC F (4x) 200k Modulation 3 1 47 Input C1 L1 (Antenna) 2 G (1x) C2 RF Bypass RO3XXXA D Bottom View 470 Millimeters Inches Dimension s Typical Local Oscillator Applications Min Nom Max Min Nom Max A 4.87 5.0 5.13 .191 .196 .201 Output B 3.37 3.5 3.63 .132 .137 .142 +VDC C 1.45 1.531.60.057 .060.062 C1 +VDC D 1.35 1.431.50.040 .057.059 L1 E .67 .80 .93 .026 .031 .036 F .37 .50 .63 .014 .019 .024 C2 G 1.07 1.201.33.042 .047.052 RO3XXXA RF Bypass Bottom View www.RFM.com E-mail: info rfm.com Page 2 of 2 2008 by RF Monolithics, Inc. RO3101A-1 - 3/26/08 (ppm) (f-f ) f o / o Case Ground Case Ground A