* * * * Ideal for 868.95 MHz FCC Part 15 Transmitters Very Low Series Resistance Quartz Stability Complies with Directive 2002/95/EC (RoHS) RO3156D RO3156D-1 RO3156D-2 Pb 868.95 MHz SAW Resonator The RO3156D 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 868.95 MHz. This SAW is designed specifically for remote-control and data-link transmitters operating in the under ETSI EN 300 220 regulations. Absolute Maximum Ratings Rating Value Units 10 dBm Input Power Level DC Voltage Storage Temperature 12 VDC -40 to +85 C 260 C Soldering Temperature, 10 seconds / 5 cycles maximum SM3838-6 Case 3.8 X 3.8 Electrical Characteristics Characteristic Sym Frequency, +25 C fC RO3156D-1 RO3156D-2 Tolerance from 916.5 MH Notes RO3156D 2, 3, 4, 5 RO3156D Minimum Typical 869.150 868.800 869.100 868.850 869.050 IL Quality Factor 2, 5, 6 Unloaded Q QU 50 Loaded Q QL Turnover Temperature TO Turnover Frequency fO Frequency Temperature Coefficient FTC Absolute Value during the First Year |fA| RM Motional Inductance LM Motional Capacitance CM Transducer Static Capacitance CO LTEST Lid Symbolization Standard Reel Quantity 2.5 dB 6300 5, 6, 7 850 10 1 5 Motional Resistance Test Fixture Shunt Inductance 1.20 6, 7, 8 DC Insulation Resistance between Any Two Terminals RF Equivalent RLC Model kHz 100 Insertion Loss Frequency Aging MHz 150 RO3156D-2 Temperature Stability Units 200 fC RO3156D-1 Maximum 868.750 25 40 C fc MHz 0.032 ppm/C2 ppm 10 1.0 5, 6, 7, 9 M 15.7 18.1 H 1.85 fF 5, 6, 9 2.2 pF 2, 7 15.2 nH RO3156D: 715, RO3156D-1: 924, RO3156D-2: 925 //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 subject to change without notice. www.RFM.com E-mail: info@rfm.com (c)2009 by RF Monolithics, Inc. 7. 8. 9. 10. 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 RO3156D - 7/30/09 Power Test Electrical Connections 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 Pin Connection 1 NC 2 Terminal 3 NC 4 NC 5 Terminal 6 NC C 1 G 50 Source at F C P INCIDENT Low-Loss Matching Network to 50 P REFLECTED 1 6 6 1 3 4 E 5 2 4 3 I 4 +9VDC Modulation Input C1 47 L1 (Antenna) 1 D 5 Typical Low-Power Transmitter Application 200k 5 3 Typical Application Circuits H 6 A 2 2 2 3 5 4 J 6 C2 ROXXXXC Bottom View RF Bypass 470 Case Dimensions Typical Local Oscillator Application mm Dimension A B C D E G H I J Inches Output 200k 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 +VDC C1 +VDC L1 1 6 2 3 5 4 C2 ROXXXXC Bottom View RF Bypass Equivalent LC Model Typical Test Circuit 0.05 pF* 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)2009 by RF Monolithics, Inc. Page 2 of 2 RO3156D - 7/30/09