ZTB455YTR [TOKEN]

ZTBY 375- 250 KHz Ceramic Resonators; ZTBY 375- 250千赫陶瓷谐振器


型号：	ZTB455YTR
厂家：	TOKEN ELECTRONICS INDUSTRY CO., LTD.
描述：	ZTBY 375- 250 KHz Ceramic Resonators ZTBY 375- 250千赫陶瓷谐振器陶瓷谐振器
文件：	总3页 (文件大小：352K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ZTBY 375- 250 KHz Ceramic Resonators

TOKEN

Surface Mountable

Ceramic Resonators

Surface Mountable Formed Leads

Ceramic Resonators (Murata CSBF Compatible)

Preview

Token manufactures a broad range of high quality

Ceramic Resonators covering both the KHz and

Mhz frequency ranges and a full range of industry

standard Through Hole and Surface Mount

resonators both with and without internal capacitors.

The high quality and extensive coverage of this

product line allows optimum design of almost any

oscillating circuit.wide variety of applications.

The surface mountable Ceramic resonators (ZTBY)

is one of ZTB device series with the frequency range

of 375 kHz to 1,250 kHz. Initial frequency tolerance

is ± 0.5% which compares very favorably to the norminal ±2% ~ ±3% requirements of one chip microprocessors.

Stability and Aging Tolerance narrows to ± 0.3%. The ZTBY Resonator provides reliable start up and stable

oscillation in microprocessor circuits across a wide variety of applications.

The ZTBY Ceramic resonators stand between quartz crystal oscillators and LC/RC oscillators in regard to

accuracy but are considerably smaller, require no adjustments, have improved start-up times, and are low in cost.

The ZTBY oscillation is dependent upon mechanical resonance associated with their piezoelectric crystalline

structure and utilizes the area vibration mode of the piezoelectric element.

Token ZTBY resonators conform to the RoHS directive. Application of speciﬁc designs also available including

different tighter tolerances speciﬁcation adjusted to frequency requirements. Please contact our sales for more

information.

rsion 2010

01 of 03

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http://www.token.com.tw/

ZTBY 375- 250 KHz Ceramic Resonators

TOKEN

Dimensions (Unit: mm Tolerance: ±0.3mm)

Frequency

Range

lead

space

⊕

ZTB

455Y

T₁

T₂

⊖

width thickness height

+0.1

-0.4

(kHz)

375~429

430~509

510~699

700~1250

8.0

7.5

7.0

5.0

3.5

3.3

3.0

2.2

9.0

8.5

6.0

5.0

2.5

1.0

1.1

0.8

0.15

0.12

2.0

T2±0.03

T1±0.1

1.0

Technical Characteristics

Frequency

Accuracy

(at 25°C)

Resonant

Impedance

(Ω)

Stability in

Temperature

(-20°C~+80°C)(%)

Aging For

10 Years

(%)

Load Capacitance (pF)

Part

Number

ZTB375 ~ 429Y

ZTB430 ~ 509Y

ZTB510 ~ 699Y

ZTB700 ~ 999Y

ZTB1000 ~ 1250Y

±2kHz

±0.5%

≤20

≤30

≤70

≤100

±0.3

120

100

470

100

rfq token.com.tw

http://www.token.com.tw/

Version 2010

02 of 03

ZTBY 375- 250 KHz Ceramic Resonators

TOKEN

(ZTBY) Resonator Selection - Test Circuit for MOS IC

Loading Capacitor (C1 & C2)

VDD

The stability of the oscillation circuit is mainly

determined by the C1 & C2 values. If the load

capacitance is too small, unstable oscillation will

occur because of oscillation waveform distortion.

If too high, a stop in oscillation can be expected.

Output

1MΩ

IC:1/6TC4069UBP×2

X: Ceramic Resonator

VDD:+5V

When comparing the same IC, oscillation circuits

with lower frequencies require higher capacitance.

C1C2:Load Capacitance

Feedback Resistor (R = 1MΩ):

A Feedback Resistor is used to determine the oscillation circuit bias. The feedback resistance will contrib-

ute to instability if it is too large by reducing feedback. Conversely, if it is too small, increases in current

will be realized thereby reducing gain. Recent developments in IC design allows for the integration of the

feedback resistor in many cases.

Token Engineers can help with the circuit design if needed.

(ZTBY) Resonator Optimization - IC Evaluations

Tolerance is determined by the design of the resonator. However stability and correlation is determined by

the IC evaluation. The microcontroller is evaluated with the ceramic resonators to determine the best pos-

sible circuit conditions to achieve stability and stable oscillation.

In addition, frequency correlation is measured to meet the tight initial frequency tolerance required. For the

tight tolerance resonators the IC evaluation must be completed on the ﬁnal circuit board layout. The ﬁnal

circuit boards provide the most accurate measurement of the frequency correlation.

This measurement will account for the effects of stray capacitance on the oscillation frequency. Once the

correlation is determined the frequency of the resonator is adjusted to compensate for the correlation.

How to Orders

ZTB

455









 Part Number

 Center Frequency (KHz)

 SMD type

 Packaging

Code

Package

Bulk

Taping Reel

Back to 1st Page - Ceramic Surface Mountable Ceramic Resonators

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rsion 2010

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