搜档网
当前位置:搜档网 › RO3073E-1;中文规格书,Datasheet资料

RO3073E-1;中文规格书,Datasheet资料

RO3073E-1;中文规格书,Datasheet资料
RO3073E-1;中文规格书,Datasheet资料

Electrical Characteristics

Characteristic Sym Notes Minimum Typical Maximum Units

Frequency (+25 °C)Absolute Frequency f C

2, 3, 4, 5314.950315.050MHz

Tolerance from 315.0MHz?f C±50kHz Insertion Loss IL2, 5, 6 1.6 2.4dB Quality Factor Unloaded Q Q U8200

50 ? Loaded Q Q L1350

Temperature Stability Turnover Temperature T O

6, 7, 8102535°C

Turnover Frequency f O f C

Frequency Temperature Coefficient FTC0.032ppm/°C2 Frequency Aging Absolute Value during the First Year|f A|1, 610ppm/yr DC Insulation Resistance between Any Two Terminals5 1.0M?

RF Equivalent RLC Model Motional Resistance R M

5, 7, 919.8?

Motional Inductance L M82μH

Motional Capacitance C M 3.1fF

Shunt Static Capacitance C O5, 6, 9 4.1pF Test Fixture Shunt Inductance L TEST2, 763nH Lid Symbolization802 // YWWS

Standard R eel Q uantity

Reel Size 7 Inch

10

500 Pieces / Reel Reel Size 13 Inch3000 Pieces / Reel

?Ideal for 315MHz Automotive-Keyless-Entry Transmitters

?Very Low Series Resistance

?Quartz Stability

?Complies with Directive 2002/95/EC (RoHS)

The RO3073E-1 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 315MHz. This SAW was designed for AM transmitters in automotive-keyless-entry applica-tions operating in the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.

Absolute Maximum Ratings

Rating Value Units Input Power Level0dBm

DC Voltage12VDC Storage Temperature Range-40 to +125°C Operating Temperature Range-40 to +105°C Soldering Temperature (10 seconds / 5 cycles max.)260°C 315.0 MHz

SAW Resonator RO3073E-1

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.

Notes:

1.Frequency aging is the change in f C 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 subse-quent years.

2.The center frequency, f C, is measured at the minimum insertion loss point, IL MIN,

with the resonator in the 50? test system (VSWR ≤ 1.2:1). The shunt induc-

tance, L TEST, is tuned for parallel resonance with C O at f C. Typically, f OSCILLA-TOR

or f TRANSMITTER is approximately equal to the resonator f C.

3.One or more of the following United States patents apply: 4,454,488 and

4,616,197.

4.Typically, equipment utilizing this device requires emissions testing and govern-

ment approval, which is the responsibility of the equipment manufacturer.

5.Unless noted otherwise, case temperature T C=+25°C±2°C.

6.The design, manufacturing process, and specifications of this device are subject

to change without notice.7.Derived mathematically from one or more of the following directly measured

parameters: f C, IL, 3dB bandwidth, f C versus T C, and C O.

8.Turnover temperature, T O, is the temperature of maximum (or turnover) fre-

quency, f O. The nominal frequency at any case temperature, T C, may be calcu-lated from: f=f O[1-FTC(T O-T C)2]. Typically oscillator T O is approximately equal to the specified resonator T O.

9.This equivalent RLC model approximates resonator performance near the reso-

nant frequency and is provided for reference only. The capacitance C O is the

static (nonmotional) capacitance between the two terminals measured at low fre-quency (10MHz) with a capacitance meter. The measurement includes parasitic capacitance with "NC” pads unconnected. Case parasitic capacitance is

approximately 0.05pF. Transducer parallel capacitance can by calculated as:

C P≈C O-0.05pF.

10.Tape and Reel Standard Per ANSI / EIA 481.

Pb

https://www.sodocs.net/doc/c510627641.html, E-mail: info@https://www.sodocs.net/doc/c510627641.html, Page 1 of 2

315.0 MHz SAW Resonator

https://www.sodocs.net/doc/c510627641.html, E-mail: info@https://www.sodocs.net/doc/c510627641.html, Page 2 of 2

Case Dimensions

Equivalent LC Mode l

Temperature Characteristics

The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions .

Pin Connection

1NC 2Terminal 3NC 4NC 5Terminal 6

NC

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 indi-cates 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.

Typical Test Circuit

The test circuit inductor, L TEST , is tuned to resonate with the static capacitance, C O , at F C .

Electrical Test

Typical Application Circuits

Dimension

mm Inches Min Nom Max Min Nom Max A 2.87 3.0 3.130.1130.1180.123B 2.87 3.0 3.130.1130.1180.123C 1.12 1.25 1.380.0440.0490.054D 0.770.90 1.030.0300.0350.040E 2.67 2.80 2.930.1050.1100.115F 1.47 1.6 1.730.0580.0630.068G 0.720.850.980.0280.0330.038H 1.37 1.5 1.630.0540.0590.064I 0.470.600.730.0190.0240.029J

1.17

1.30

1.43

0.046

0.051

0.056

分销商库存信息: RFM

RO3073E-1

相关主题