RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.
 
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RO2131D

3.8x3.8mm case		 314.35 MHz Resonator - Single Port

• Ideal for 314.350 MHz Automotive-Keyless-Entry Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)

download data sheet Rev Date 03/25/08

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The RO2131D 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 local oscillators operating at approximately 314.350 MHz. This SAW was designed for AM transmitters in automotive-keyless-entry applications operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.

   
Electrical Characteristics
Characteristic Symbol Minimum Typical Maximum Units
Frequency (+25 °C) Absolute Frequency fC 314.300 314.400 MHz
Tolerance from 314.350 MHz ?fC ±50 kHz
Insertion Loss IL 1.6 2.5 dB
Quality Factor Unloaded Q QU 6516
50 Ohm Loaded Q QL 1066
Temperature Stability Turnover Temperature TO 10 25 40 °C
Turnover Frequency fO fC
Frequency Temperature Coefficient FTC 0.032 ppm/°C2
Frequency Aging Absolute Value during the First Year |fA| 10 ppm/yr
DC Insulation Resistance between Any Two Terminals 1.0 MOhm
RF Equivalent RLC Model Motional Resistance RM 20.00 Ohm
Motional Inductance LM 65.00 uH
Motional Capacitance CM 4.00 fF
Shunt Static Capacitance CO 2.0 3.6 pF
Test Fixture Shunt Inductance LTEST 64.6 nH
Lid Symbolization 440

Application Notes
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