RFM products are now Murata products. RO3144E/E-1/E-2 • • • • Ideal for 916.5 MHz Remote Control and Data Telemetry Transmitters Very Low Series Resistance Quartz Stability Pb Complies with Directive 2002/95/EC (RoHS) 916.5 MHz SAW Resonator The RO3144E is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case. It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 916.5 MHz. This SAW is designed specifically for remote control and data telemetry transmitters operating in the USA under FCC Part 15 regulations and in Canada under DoC RSS-210. Absolute Maximum Ratings Rating Value Units 0 dBm Input Power Level DC Voltage 12 VDC Storage Temperature -40 to +125 °C Operating Temperature Range -40 to +125 °C 260 °C Soldering Temperature Electrical Characteristics Characteristic Frequency, +25 °C Sym fC RO3144E-1 RO3144E-2 Tolerance from 916.5 MHz Notes RO3144E 2, 3, 4, 5 RO3144E Minimum SM3030-6 Case 3.0 X 3.0 Typical Maximum 916.300 916.700 916.350 916.650 916.400 916.600 ±150 RO3144E-2 Temperature Stability Frequency Aging IL Unloaded Q QU 50 Loaded Q QL Turnover Temperature TO Turnover Frequency fO 2, 5, 6 15 FTC Absolute Value during the First Year |fA| 1 5 1.6 dB 780 6, 7, 8 Frequency Temperature Coefficient 25 40 °C fc MHz 0.032 ppm/°C2 ppm 10 1.0 M 14 15.4 µH Motional Resistance RM Motional Inductance LM Motional Capacitance CM 1.9 fF Transducer Static Capacitance CO 5, 6, 9 1.9 pF LTEST 2, 7 16 nH Test Fixture Shunt Inductance 5, 6, 7, 9 Lid Symbolization Standard Reel Quantity 1.2 6400 5, 6, 7 DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model kHz ±100 Insertion Loss Quality Factor MHz ±200 fC RO3144E-1 Units RO3144E 693, RO3144E-1 769, RO3144E-2 770 / 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 +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 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 = +25 ± 2 °C. The design, manufacturing process, and specifications of this device are subject to change without notice. ©2010-2015 by Murata Electronics N.A., Inc. RO3144E/E-1/E-2 (R) 7/31/15 7. 8. 9. 10. Page 1 of 2 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 for ANSI / EIA 481. www.murata.com Temperature Characteristics Electrical Connections B Pin 1 NC 2 Terminal 3 NC 4 NC 5 Terminal 6 NC 6 A 2 5 3 4 fC = f O , T C = T O 0 G C 1 E F The curve shown accounts for resonator contribution only and does not include external LC component temperature effects. Connection 0 -50 -50 -100 -100 -150 -150 (f-fo ) / fo (ppm) 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. -200 -80 -60 -40 -20 H 6 1 5 2 4 3 -200 0 +20 +40 +60 +80 T = TC - T O ( °C ) I Characterization Test Circuit Inductor LTEST is tuned to resonate with the static capacitance, CO, at FC. D J 6 1 From 50 Network Analyzer 5 2 4 3 To 50 Network Analyzer K L N K N Power Dissipation Test O N M M 50 Source at F C Case and Typical PCB Land Dimensions Ref A B C D E F G H I J K L M N O Min 2.87 2.87 1.12 0.77 2.67 1.47 0.72 1.37 0.47 1.17 mm Nom 3.00 3.00 1.25 0.90 2.80 1.60 0.85 1.50 0.60 1.30 3.20 1.70 1.05 0.81 0.38 Max 3.13 3.13 1.38 1.03 2.93 1.73 0.98 1.63 0.73 1.43 Min 0.113 0.113 0.044 0.030 0.105 0.058 0.028 0.054 0.019 0.046 P INCIDENT Low-Loss Matching Network to 50 P REFLECTED Inches Nom 0.118 0.118 0.049 0.035 0.110 0.063 0.033 0.059 0.024 0.051 0.126 0.067 0.041 0.032 0.015 Max 0.123 0.123 0.054 0.040 0.115 0.068 0.038 0.064 0.029 0.056 1 6 5 4 Typical Low-Power Transmitter Application Modulation Input 200k +9VDC C1 47 L1 (Antenna) 1 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass 470 Typical Local Oscillator Application Output 200k C1 Equivalent RLC Model +VDC L1 0.05 pF* Cp Lm 3 Example Application Circuits +VDC Rm 2 1 Co = Cp + 0.05 pF 6 2 3 5 4 C2 *Case Parasitics ROXXXXC Bottom View RF Bypass Cm ©2010-2015 by Murata Electronics N.A., Inc. RO3144E/E-1/E-2 (R) 7/31/15 Page 2 of 2 www.murata.com