RFM products are now Murata products. RO3053A-1 • • • • • Designed for 310.0 MHz Transmitters Very Low Series Resistance Quartz Stability Surface-mount Ceramic Case Complies with Directive 2002/95/EC (RoHS) 310.0 MHz SAW Resonator Pb The RO3053A-1 is a one-port surface-acoustic-wave (SAW) resonator packaged in a surface-mount ceramic case. It provides reliable, fundamental-mode quartz frequency stabilization of fixed-frequency transmitters operating at 310.0 MHz. 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 -40 to +85 °C 260 °C Case Temperature Soldering Temperature (10 seconds / 5 cycles maximum) SM5035-4 Electrical Characteristics Characteristic Center Frequency, +25 °C Sym fC Absolute Frequency Tolerance from 310.0 MHz Quality Factor Temperature Stability Frequency Aging 2,3,4,5 fC Insertion Loss IL Unloaded Q QU 50 Loaded Q QL Turnover Temperature TO Turnover Frequency fO 1.2 |fA| 25 0.032 5 RM Motional Inductance LM Motional Capacitance CM Shunt Static Capacitance CO 5, 6, 9 LTEST 2, 7 MHz ±50 kHz 1.7 dB 40 °C fC 10 1 Motional Resistance Units 310.050 1970 10 FTC Maximum 15500 6,7,8 Frequency Temperature Coefficient Typical 309.950 5,6,7 Absolute Value during the First Year Test Fixture Shunt Inductance Minimum 2,5,6 DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model Notes 1.0 5, 7, 9 Lid Symbolization (in addition to Lot and/or Date Codes) ppm/°C2 ppm/yr M 14.6 115.7 µH 2.3 fF 2.6 pF 102 nH 810 // YYWWS 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 ©2010-2014 by Murata Electronics N.A., Inc. RO3053A-1 (R) 3/26/14 7. 8. 9. 10. Page 1 of 2 subject to change without notice. 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. www.murata.com Electrical Connections Equivalent RLC Model 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. C Terminal Case Ground Case Ground P L Terminal C S C M C R M = 0 .0 5 p F (C a s e P a r a s itic s ) = S A W S ta tic C a p a c ita n c e = C S + C P P C C S O M Temperature Characteristics The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC. ELECTRICAL TEST fC = f O , T C = T O -50 -50 -100 -100 -150 -150 -200 -80 -60 -40 -20 Case -200 0 +20 +40 +60 +80 T = TC - T O ( °C ) To 50 Network Analyzer From 50 Network Analyzer 0 0 (f-fo ) / fo (ppm) Typical Test Circuit The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions. T o p V ie w S id e V ie w B C B o tto m V ie w E (3 x ) 4 F (4 x ) 1 A POWER TEST 3 P INCIDENT 50 Source P at F C REFLECTED Low-Loss Matching Network to 50 2 Terminal G (1 x ) NC NC D Terminal H CW RF Power Dissipation = P INCIDENT - P REFLECTED I Typical Application Circuits I I H Typical Low-Power Transmitter Application H +9VDC Modulation Input J H 200k K C1 47 L1 (Antenna) L PCB Land Pattern Top View C2 RF Bypass RO3XXXA Bottom View Dimensions 470 A Typical Local Oscillator Applications Output +VDC C1 +VDC L1 C2 RO3XXXA Bottom View ©2010-2014 by Murata Electronics N.A., Inc. RO3053A-1 (R) 3/26/14 RF Bypass Page 2 of 2 Millimeters Inches Min Nom Max Min Nom Max 4.87 5.00 5.13 0.191 0.196 0.201 B 3.37 3.50 3.63 0.132 0.137 0.142 C 1.45 1.53 1.60 0.057 0.060 0.062 D 1.35 1.43 1.50 0.040 0.057 0.059 E 0.67 0.80 0.93 0.026 0.031 0.036 F 0.37 0.50 0.63 0.014 0.019 0.024 G 1.07 1.20 1.33 0.042 0.047 0.052 H - 1.04 - - 0.041 - I - 1.46 - - 0.058 - J - 3.01 - - 0.119 - K - 1.44 - - 0.057 - L - 1.92 - - 0.076 - www.murata.com