Datasheet > SR305

SR305

更新时间： 2024-11-20 06:13:43

品牌	Logo	应用领域
VANLONG		谐振器
页数	文件大小	规格书
2页	86K
描述
305.675 MHz One-Port SAW Resonator

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中文翻译

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SR305 数据手册

305.675 MHz One-Port SAW Resonator

•

Ideal for 305.675 MHz Transmitters

Very Low Insertion Loss

SR305

Quartz Stability

Rugged, Hermetic, Low Profile TO-39 Package

Absolute Maximum Rating (Ta=25°C)

Parameter

CW RF Power Dissipation

Rating

Unit

dBm

DC Voltage

V_DC

T_A

T_stg

±30

Operating Temperature Range

Storage Temperature Range

-10 ~ +60

-40 ~ +85

°C

Electronic Characteristics

Parameter

Nominal Frequency

Sym

Minimum

Typical

305.675

Maximum

Unit

MHz

KHz

f_C

± 75

2.2

Frequency (25°C)

Tolerance from 305.675 MHz

∆f_C

Insertion Loss

Quality Factor

1.8

Unloaded Q-Value

Q_U

Q_L

13,100

2,450

50Ω Loaded Q-Value

Temperature Stability

Turnover Temperature

Turnover Frequency

T_O

f_O

°C

KHz

ppm/°C²

Frequency Temperature Coefficient

FTC

-0.032

Frequency Aging

Absolute Value during the First Year

|f_A|

ppm/yr

DC Insulation Resistance Between any Two Pins

1.0

MΩ

RF Equivalent RLC Model

Motional Resistance

R_M

L_M

156.9826

1.7287

2.4

Ω

µH

Motional Inductance

Motional Capacitance

Pin 1 to Pin 2 Static Capacitance

C_M

C_O

2.1

2.7

NS = Not Specified

Notes:

The center frequency, f_C, is measured at the minimum IL point with

the resonator in the 50Ω test system.

Derived mathematically from one or more of the following directly

measured parameters: f_C, IL, 3 dB bandwidth, f_Cversus T_C, and C₀.

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

The specifications of this device are based on the test circuit shown

above and subject to change or obsolescence without notice.

Frequency aging is the change in f_Cwith 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.

Typically, equipment utilizing this device requires emissions testing

and government approval, which is the responsibility of the

equipment manufacturer.

Turnover temperature, T₀, is the temperature of maximum (or

turnover) frequency, f₀. The nominal frequency at any case

temperature, T_C, may be calculated from: f = f₀[1 - FTC (T₀- T_C)²].

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.

This equivalent RLC model approximates resonator performance

near the resonant frequency and is provided for reference only. The

capacitance C₀is the measured static (nonmotional) capacitance

between Pin1 and Pin2. The measurement includes case parasitic

capacitance.

10. For questions on technology, prices and delivery please contact our

sales offices or e-mail to sales@vanlong.com.

Phone: +86 10 6301 4184

Fax: +86 10 6301 9167

Email: sales@vanlong.com

Web: http://www.vanlong.com

SR305

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