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.
 
Technical Support       Log In



Download 2009
Wireless Device
Selection Guide

Bookmark and Share

RO2122A

5.97x3.94mm case		 Not for new design
Replacement Part RO3122A

293.125 MHz Resonator - Single Port


• Ideal for 303.825 MHz Superhet Receiver LOs
• Very Low Series Resistance
• Quartz Stability
• Surface-Mount, Ceramic Case with 21 mm2 Footprint
• Complies with Directive 2002/95/EC (RoHS)

download data sheet Rev Date 03/25/08

download Package Specs

  • Features
  • Specs
  • AppNotes
  • Buy Now
  • End of Life
The RO2122A 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 293.125 MHz. This SAW is designed for 303.825 MHz superhet receivers with 10.7 MHz IF. Applications include remote-control and wireless security receivers operating in the USA under FCC Part 15, in Japan, in Korea, and in Australia.

   
Electrical Characteristics
Characteristic Symbol Minimum Typical Maximum Units
Frequency (+25 °C) Nominal Frequency fC 293.025 293.225 MHz
Tolerance from 293.125 MHz ?fC ±100 kHz
Insertion Loss IL 0.8 1.5 dB
Quality Factor Unloaded Q QU 17500
50 Ohm Loaded Q QL 1600
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 10 19 Ohm
Motional Inductance LM 94.3270 uH
Motional Capacitance CM 3.12428 fF
Transducer Static Capacitance CO 2.9 3.2 3.5 pF
Test Fixture Shunt Inductance LTEST 90 nH
Lid Symbolization

Application Notes
White Papers
Acal Avnet Digi-Key Mouser Nu Horizons North America Countries

RFM products are sold through a world-wide network of manufacturer's sales reps and distributors.

The purpose of this End-of-Life Product Notice is to communicate the obsolescence of the RO2122A.

REPLACEMENT PARTS. RFM will provide technical assistance to minimize customer resources and time required to transition to an alternative product. RFM recommends the following replacement part: RO3122A,

LAST-TIME-BUY. The notice of obsolescence for this device was announced August 2007. As a result, last-time-buy orders (LTB) will be accepted based on product availability.
Buy from Mouser
Buy from Acal
Buy from Avnet
Buy from Digi-Key
Buy from Nu Horizons

TERMS. All orders will be non-cancellable, non-returnable and all shipments must be complete by May 31, 2010. All last time buy orders are covered by the RFM standard One Year Product Warranty.

Please contact local RFM Sales Rep or Distributor for additional information.

Need a Quote & Availability?
Not Finding What You Need?
Have a Technical Question?
First Name Last Name
Company Name
Email Address Phone
State (if in USA or Canada):
Country
Comments: