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 916.5 MHz Quartz Stability Pb SAW Complies with Directive 2002/95/EC (RoHS) 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 Input Power Level 0 dBm DC Voltage 12 VDC SM3030-6 Case Storage Temperature -40 to +125 C 3.0 X 3.0 Operating Temperature Range -40 to +125 C Soldering Temperature 260 C Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Frequency, +25 C RO3144E 916.300 916.700 f RO3144E-1 916.350 916.650 MHz C RO3144E-2 916.400 916.600 2, 3, 4, 5 Tolerance from 916.5 MHz RO3144E 200 f RO3144E-1 150 kHz C RO3144E-2 100 Insertion Loss IL 2, 5, 6 1.2 1.6 dB Quality Factor Unloaded Q Q 6400 U 5, 6, 7 50 Loaded Q Q 780 L T 15 25 40 C Temperature Stability Turnover Temperature O Turnover Frequency f 6, 7, 8 fc MHz O 2 Frequency Temperature Coefficient FTC 0.032 ppm/C Frequency Aging Absolute Value during the First Year fA 1 10 ppm DC Insulation Resistance between Any Two Terminals 5 1.0 M RF Equivalent RLC Model Motional Resistance R 14 M Motional Inductance L 5, 6, 7, 9 15.4 H M Motional Capacitance C 1.9 fF M Transducer Static Capacitance C 5, 6, 9 1.9 pF O Test Fixture Shunt Inductance L 2, 7 16 nH TEST Lid Symbolization RO3144E 693, RO3144E-1 769, RO3144E-2 770 / YWWS Standard Reel Quantity Reel Size 7 Inch 500 Pieces / Reel 10 Reel Size 13 Inch 3000 Pieces / Reel CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. NOTES: 1. Frequency aging is the change in f with time and is specified at +65 C or less. Aging 7. Derived mathematically from one or more of the following directly measured C parameters: f , IL, 3 dB bandwidth, f versus T , and C . may exceed the specification for prolonged temperatures above +65 C. Typically, C C C O aging is greatest the first year after manufacture, decreasing in subsequent years. 8. Turnover temperature, T , is the temperature of maximum (or turnover) frequency, f . O O 2. The center frequency, f , is measured at the minimum insertion loss point, IL , with C MIN The nominal frequency at any case temperature, T , may be calculated from: C the resonator in the 50 test system (VSWR 1.2:1). The shunt inductance, L , is 2 TEST f=f 1 - FTC (T -T ) . Typically oscillator T is approximately equal to the O O C O tuned for parallel resonance with C at f . Typically, f or f is O C OSCILLATOR TRANSMITTER specified resonator T . O approximately equal to the resonator f . C 9. This equivalent RLC model approximates resonator performance near the resonant 3. One or more of the following United States patents apply: 4,454,488 and 4,616,197. frequency and is provided for reference only. The capacitance C is the static O 4. Typically, equipment utilizing this device requires emissions testing and government (nonmotional) capacitance between the two terminals measured at low frequency approval, which is the responsibility of the equipment manufacturer. (10 MHz) with a capacitance meter. The measurement includes parasitic capacitance 5. Unless noted otherwise, case temperature T = +25 2 C. C withNC pads unconnected. Case parasitic capacitance is approximately 0.05 pF. 6. The design, manufacturing process, and specifications of this device are subject to Transducer parallel capacitance can by calculated as: C C -0.05pF. P O change without notice. 10. Tape and Reel Standard for ANSI / EIA 481. 2010-2015 by Murata Electronics N.A., Inc. RO3144E/E-1/E-2 (R) 7/31/15 Page 1 of 2 www.murata.comTemperature Characteristics Electrical Connections The curve shown accounts for resonator contribution only and does not The SAW resonator is bidirectional and Pin Connection include external LC component temperature effects. may be installed with either orientation. 1NC The two terminals are interchangeable f = f , T = T C O C O 2Terminal and unnumbered. The callout NC 0 0 indicates no internal connection. The NC 3NC -50 -50 pads assist with mechanical positioning 4NC and stability. External grounding of the NC 5Terminal -100 -100 pads is recommended to help reduce 6NC -150 -150 parasitic capacitance in the circuit. -200 BC GH -200 -80 -60 -40 -20 0 +20 +40 +60 +80 1 6 6 1 T = T - T ( C ) C O A 2 5 EF 5 2 I Characterization Test Circuit Inductor L is tuned to resonate with the static capacitance, C , at F . TEST O C 3 4 4 3 D J 6 1 From 50 5 To 50 2 Network Analyzer Network Analyzer 4 3 Power Dissipation Test P INCIDENT Low-Loss 50 Source 2 3 Matching 1 at F C Network to Case and Typical PCB Land Dimensions 6 5 4 P REFLECTED 50 mm Inches Ref Min Nom Max Min Nom Max A 2.87 3.00 3.13 0.113 0.118 0.123 Example Application Circuits B 2.87 3.00 3.13 0.113 0.118 0.123 Typical Low-Power Transmitter Application C 1.12 1.25 1.38 0.044 0.049 0.054 200k D 0.77 0.90 1.03 0.030 0.035 0.040 +9VDC Modulation Input C1 E 2.67 2.80 2.93 0.105 0.110 0.115 47 L1 F 1.47 1.60 1.73 0.058 0.063 0.068 (Antenna) G 0.72 0.85 0.98 0.028 0.033 0.038 2 3 1 H 1.37 1.50 1.63 0.054 0.059 0.064 I 0.47 0.60 0.73 0.019 0.024 0.029 6 5 4 C2 J 1.17 1.30 1.43 0.046 0.051 0.056 ROXXXXC Bottom View K 3.20 0.126 RF Bypass L 1.70 0.067 470 M 1.05 0.041 Typical Local Oscillator Application Output N 0.81 0.032 O 0.38 0.015 200k +VDC C1 +VDC L1 Equivalent RLC Model 0.05 pF* 2 3 1 + 6 5 4 C = C 0.05 pF p o C p C2 *Case Parasitics ROXXXXC Bottom View RF Bypass Rm Lm Cm 2010-2015 by Murata Electronics N.A., Inc. www.murata.com RO3144E/E-1/E-2 (R) 7/31/15 Page 2 of 2 (ppm) (f-f f ) o / o