RO2073A

Features:

• Ideal for 315 MHz Automotive-Keyless-Entry Transmitters
• Very Low Series Resistance
• Quartz Stability
• Surface-Mount, Ceramic Case with 21 mm² Footprint
• Complies with Directive 2002/95/EC (RoHS)




Specifications

Rating	Value	Units
CW RF Power Dissipation (See: Typical Test Circuit)	+0	dBm
DC Voltage Between Any Two Pins (Observe ESD Precautions)	±30	VDC
Case Temperature	-40 to +85
Soldering Temperature (10 seconds / 5 cycles max.)	260

Characteristic Symbol Minimum Typical Maximum Units Frequency (+25 C) Absolute Frequency fC 314.900 315.100 MHz Tolerance from 315.0 MHz ?fC 100 kHz Insertion Loss IL 1.3 2.2 dB Quality Factor Unloaded Q QU 15300 50 Ohm Loaded Q QL 2100 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 16 26 Ohm Motional Inductance LM 127.450 uH Motional Capacitance CM 2.00299 fF Shunt Static Capacitance CO 2.0 2.3 2.6 pF Test Fixture Shunt Inductance LTEST 110 nH Lid Symbolization 101




Description

The RO2073A 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
315 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.