RO3104D * * * * * Ideal for 303.825 MHz Transmitters Very Low Series Resistance Quartz Stability Surface-Mount, Ceramic Case with 21 mm2 Footprint Complies with Directive 2002/95/EC (RoHS) Pb The RO3104D 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 operating in the USA under FCC Part 15, in Australia, in Japan, and in Korea. Absolute Maximum Ratings Rating Value Units CW RF Power Dissipation (See Typical Test Circuit) 0 dBm DC Voltage Between Terminals (Observe ESD Precautions) 12 VDC -40 to +85 C 260 C Case Temperature Soldering Temperature (10 seconds / 5 cycles max.) 303.825 MHz SAW Resonator SM3838-6 Case 3.8 X 3.8 Electrical Characteristics Characteristic Frequency (+25 C) Sym fC Nominal Frequency Insertion Loss Quality Factor Temperature Stability Frequency Aging 2, 3, 4, 5 fC Tolerance from 303.825 MHz IL Unloaded Q QU 50 Loaded Q QL Turnover Temperature TO Turnover Frequency fO Absolute Value during the First Year |fA| Maximum Units 303.900 MHz 75 kHz 2.0 dB 40 C 9500 1400 25 fC 6, 7, 8 0.032 1, 6 5 10 1.0 ppm/C2 ppm/yr M 16.7 5, 6, 7, 9, 82.8 H 3.3 fF CO 5, 6, 9 3.4 pF LTEST 2, 7 80.4 nH Motional Resistance RM Motional Inductance LM Motional Capacitance CM Transducer Static Capacitance Lid Symbolization Standard Reel Quantity 1.4 10 FTC Typical 303.750 5, 6, 7 Frequency Temperature Coefficient Test Fixture Shunt Inductance Minimum 2, 5, 6 DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model Notes 689 // YWWS Reel Size 7 Inch 10 Reel Size 13 Inch 500 Pieces/Reel 3000 Pieces/Reel 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 +65C or less. Aging may exceed the specification for prolonged temperatures above +65C. 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 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. 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 = +25C2C. The design, manufacturing process, and specifications of this device are www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. 7. 8. 9. 10. subject to change. 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 approximately equal to 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 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 - 0.05 pF. Tape and Reel Standard Per ANSI / EIA 481. Page 1 of 2 RO3104D - 3/26/08 Power Test Electrical Connections Pin The SAW resonator is bidirectional and may be installed with either orientation. The two terminals are interchangeable and unnumbered. The callout NC indicates no internal connection. The NC pads assist with mechanical positioning and stability. External grounding of the NC pads is recommended to help reduce parasitic capacitance in the circuit. B Connection 1 NC 2 Terminal 3 NC 4 NC 5 Terminal 6 NC C G 50 Source at F C P INCIDENT Low-Loss Matching Network to 50 P REFLECTED H 1 6 2 3 5 4 Typical Application Circuits 6 1 6 1 5 2 Typical Low-Power Transmitter Application 200k 5 A 2 E 4 I +9VDC Modulation Input C1 D 47 L1 3 (Antenna) 4 3 1 J 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass 470 Typical Local Oscillator Application Case Dimensions mm Dimension A B C D E G H I J Output 200k Inches +VDC Min Nom Max Min Nom Max 3.60 3.60 1.00 0.95 2.39 0.90 1.90 0.50 1.70 3.80 3.80 1.20 1.10 2.54 1.0 2.0 0.6 1.8 4.0 4.0 1.40 1.25 2.69 1.10 2.10 0.70 1.90 0.14 0.14 0.04 0.033 0.090 0.035 0.75 0.020 0.067 0.15 0.15 0.05 0.043 0.10 0.04 0.08 0.024 0.07 0.16 0.16 0.055 0.05 0.110 0.043 0.83 0.028 0.075 C1 +VDC L1 1 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass Equivalent LC Model 0.05 pF* Typical Test Circuit The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC. Co = Cp + 0.05 pF Cp Electrical Test Rm Lm *Case Parasitics Cm Temperature Characteristics The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. fC = f O , T C = T O 6 0 1 5 2 4 3 To 50 Network Analyzer 0 -50 -50 -100 -100 -150 -150 (f-fo ) / fo (ppm) From 50 Network Analyzer -200 -80 -60 -40 -20 -200 0 +20 +40 +60 +80 T = T C - T O ( C ) www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. Page 2 of 2 RO3104D - 3/26/08