SR441

441.20 MHz One-Port SAW Resonator • • • • Ideal for 441.20 MHz Transmitters Very Low Insertion Loss Quartz Stability Rugged, Hermetic, Low Profile TO-39 Package SR441 Absolute Maximum Rating (Ta=25°C) Parameter CW RF Power Dissipation DC Voltage Operating Temperature Range Storage Temperature Range P VDC Rating 0 ±30 -10 ~ +60 -40 ~ +85 Unit dBm V °C °C TA Tstg Electronic Characteristics Parameter Frequency (25°C) Insertion Loss Quality Factor Temperature Stability Unloaded Q-Value 50Ω Loaded Q-Value Turnover Temperature Turnover Frequency Frequency Temperature Coefficient Frequency Aging Absolute Value during the First Year Nominal Frequency Tolerance from 441.20 MHz Sym fC Minimum NS 25 1.0 1.00 Typical 441.20 2.7 13,460 3,600 fc -0.032 36.5 177.3536 0.7345 1.15 Maximum NS ± 75 3.1 55 10 43.0 1.30 Unit MHz KHz dB °C KHz ppm/°C MΩ Ω µH fF pF 2 ∆fC IL QU QL TO fO FTC |fA| RM LM CM CO ppm/yr DC Insulation Resistance Between any Two Pins RF Equivalent RLC Model Motional Resistance Motional Inductance Motional Capacitance Pin 1 to Pin 2 Static Capacitance NS = Not Specified Notes: 1. The center frequency, fC, is measured at the minimum IL point with the resonator in the 50Ω test system. Unless noted otherwise, case temperature TC = +25°C ± 2°C. Frequency aging is the change in fC 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. Turnover temperature, T0, is the temperature of maximum (or turnover) frequency, f0. The nominal frequency at any case temperature, TC, may be calculated from: f = f0 [1 - FTC (T0 - TC)2]. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance C0 is the measured static (nonmotional) capacitance between Pin1 and Pin2. The measurement includes case parasitic capacitance. 6. Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and C0. The specifications of this device are based on the test circuit shown above and subject to change or obsolescence without notice. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. Our liability is only assumed for the Surface Acoustic Wave (SAW) component(s) per se, not for applications, processes and circuits implemented within components or assemblies. For questions on technology, prices and delivery please contact our sales offices or e-mail to sales@vanlong.com. 2. 3. 7. 8. 4. 9. 5. 10. Phone: +86 10 6301 4184 © 2004 by Vanlong Technology Co., Ltd. Fax: +86 10 6301 9167 Email: sales@vanlong.com Web: http://www.vanlong.com SR441 441.20 MHz One-Port SAW Resonator Package Dimensions (TO-39) Electrical Connections Terminals 1 2 3 Connection Input/ Output Output/ Input Case-Ground Package Dimensions Dimensions A B C D E F G Nom (mm) Min Max 9.10 9.50 3.20 3.60 2.80 3.20 Φ0.25 Φ0.65 4.98 5.18 2.54 Nominal 0.4 0.5 Marking Equivalent LC Model and Test Circuit SR441 441.20 Ink Marking Color: Black or Blue Ω Ω Typical Application Circuit Low Power Transmitter Application Local Oscillator Application Typical Frequency Response Temperature Characteristics fc = fo, Tc = To (f - fo)/fo (ppm) ∆T= Tc –To (°C) The curve shown above accounts for resonator contribution only and does not include oscillator temperature characteristics. Phone: +86 10 6301 4184 © 2004 by Vanlong Technology Co., Ltd. Fax: +86 10 6301 9167 Email: sales@vanlong.com Web: http://www.vanlong.com SR441