RO3103E;中文规格书,Datasheet资料

?Ideal for 418.00MHz Transmitters ?Very Low Series Resistance ?Quartz Stability

?Surface-Mount, Ceramic Case with 21mm 2 Footprint ?

Complies with Directive 2002/95/EC (RoHS)

The RO3103E 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 fixed-frequency transmitters 418.00 MHz

SAW Resonator

RO3103E

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 subsequent 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 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.

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 Per ANSI / EIA 481.

CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.Notes:

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 3.130.1130.1180.123

B 2.87 3.0 3.130.1130.1180.123

C 1.12 1.25 1.380.0440.0490.054

D 0.770.90 1.030.0300.0350.040

E 2.67 2.80 2.930.1050.1100.115

F 1.47 1.6 1.730.0580.0630.068

G 0.720.850.980.0280.0330.038

H 1.37 1.5 1.630.0540.0590.064

I 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

RO3103E