HR345A [HOPERF]

345MHz One-Port SAW Resonator For Wireless Remote Control; 345MHz的单口SAW谐振器无线遥控器


型号：	HR345A
厂家：	HOPERF
描述：	345MHz One-Port SAW Resonator For Wireless Remote Control 345MHz的单口SAW谐振器无线遥控器谐振器遥控无线遥控器
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HR345A

345MHz One-Port SAW Resonator For Wireless Remote Control

Approved by:

Checked by:

Issued by:

SPECIFICATION

PRODUCT:

MODEL:

SAW RESONATOR

HR345A QCC8C

HOPE MICROELECTRONICS CO.,LIMITED

Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

Page 1 of

SAW Resonator

HR345A

The HR345A is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount

ceramic QCC8C case. It provides reliable, fundamental-mode, quartz frequency stabilization i.e.

in transmitters or local oscillators operating at 345.000 MHz.

1.Package Dimension (QCC8C)

Configuration

Terminal1

Terminal2

Case Ground

Empty

4,8

1,3,5,7

Sign

Data (unit: mm)

Sign

Data (unit: mm)

2.08

0.6

1.2

1.35

5.0

1.27

2.54

5.0

2.Marking

3.Equivalent LC Model and Test Circuit

HR345A

Laser Marking

4.Typical Application Circuits

1) Low-Power Transmitter Application

2) Local Oscillator Application

5.Typical Frequency Response

6.Temperature Characteristics

Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

SAW Resonator

HR345A

7.Performance

7-1.Maximum Ratings

Rating

Value

Unit

dBm

CW RF Power Dissipation

DC Voltage Between Terminals

Storage Temperature Range

Operating Temperature Range

V_DC

T_stg

T_A

±30

-40 to +85

-10 to +60

℃

7-2.Electronic Characteristics

Characteristic

Sym Minimum

Typical

Maximum

Unit

Absolute Frequency

f_C

∆f_C

344.925

345.075

MHz

Center Frequency

(+25℃)

Tolerance from 345.000 MHz

±75

1.5

kHz

Insertion Loss

Quality Factor

2.0

Unloaded Q

Q_U

Q_L

T₀

10,960

1,750

50 Ω Loaded Q

Turnover Temperature

Turnover Frequency

1.0

2.3

℃

kHz

ppm/℃²

ppm/yr

MΩ

Temperature

Stability

f₀

f_C

Frequency Temperature Coefficient

Absolute Value during the First Year

FTC

|fA|

0.032

≤10

Frequency Aging

DC Insulation Resistance Between Any Two Terminals

Motional Resistance

R_M

L_M

C_M

C₀

Ω

Motional Inductance

RF Equivalent

96.1183

2.2163

2.6

µH

RLC Model

Motional Capacitance

Shunt Static Capacitance

2.9

ꢀCAUTION: Electrostatic Sensitive Device. Observe precautions for handling!

○

1. The center frequency, f_C, is measured at the minimum IL point with the resonator in the 50Ω test system.

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

3. 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.

4. 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].

5. 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 the two terminals.

The measurement includes case parasitic capacitance.

6. Derived mathematically from one or more of the following directly measured parameters: f_C, IL, 3 dB bandwidth, f_C

versus T_C, and C₀.

7. The specifications of this device are based on the test circuit shown above and subject to change or

obsolescence without notice.

8. Typically, equipment utilizing this device requires emissions testing and government approval, which is the

responsibility of the equipment manufacturer.

9. 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.

10. For questions on technology, prices and delivery, please contact our sales offices or e-mail sales@hoperf.com.

Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

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