RO3144E-1;RO3144E-2;中文规格书,Datasheet资料

Electrical Characteristics Characteristic

Sym Notes Minimum

Typical

Maximum

Units

Frequency (+25 °C) Nominal Frequency RO3144E

f C

2, 3, 4, 5

916.300916.700MHz

RO3144E-1916.350916.650RO3144E-2

916.400

916.600Tolerance from 916.5 MHz

RO3144E Δf C ±200kHz RO3144E-1±150RO3144E-2

±100Insertion Loss IL 2, 5, 6 1.2 1.6

dB Quality Factor Unloaded Q Q U 5, 6, 7

640050 Ω Loaded Q Q L 780Temperature Stability

Turnover Temperature T O 6, 7, 815

2540°C Turnover Frequency

f

O fc MHz Frequency Temperature Coefficient

FTC 0.032ppm/°C 2Frequency Aging

Absolute Value during the First Year |fA|

110

ppm DC Insulation Resistance between Any Two Terminals

5

1.0

M ΩRF Equivalent RLC Model

Motional Resistance R M 5, 6, 7, 9

14ΩMotional Inductance L M 15.4μH Motional Capacitance C M 1.9fF Transducer Static Capacitance

C O 5, 6, 9 1.9pF Test Fixture Shunt Inductance L TEST

2, 716

nH

Lid Symbolization RO3144E 693, RO3144E-1 769, RO3144E-2 770 / YWWS

Standard Reel Quantity

Reel Size 7 Inch 10

500 Pieces / Reel Reel Size 13 Inch

3000 Pieces / Reel

?Ideal for 916.5 MHz FCC Part 15 Transmitters ?Very Low Series Resistance ?Quartz Stability

?

Complies with Directive 2002/95/EC (RoHS)

The RO3144E 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 916.5 MHz. This SAW is designed specifically for remote-control and data-link transmitters operating in the USA under FCC Part 15 regulations.

Absolute Maximum Ratings Rating

Value

Units

Input Power Level 0dBm DC Voltage

12VDC Storage Temperature

-40 to +125°C Operating Temperature Range -40 to +125

°C Soldering Temperature

260

°C

916.5 MHz SAW Resonator

RO3144E RO3144E-1RO3144E-2

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 50Ω test system (VSWR ≤ 1.2:1). The shunt inductance, L TEST , is tuned for parallel resonance with C O at f C . Typically, f OSCILLATOR 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

government 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) frequency, f O . The nominal frequency at any case temperature, T C , may be calculated 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 resonant frequency and is provided for reference only. The capacitance C O is the static (nonmotional) capacitance between the two terminals measured at low frequency (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 for ANSI / EIA 481.

Pb

Equivalent LC Model

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

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.

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

Case Dimensions

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

1.430.046

0.051

0.056

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RO3144E-1RO3144E-2