Datasheet > CXH49SFA10000H0QSWZZ

CXH49SFA10000H0QSWZZ

更新时间： 2024-02-27 14:58:06

品牌	Logo	应用领域
京瓷/艾维克斯 - KYOCERA AVX		晶体
页数	文件大小	规格书
27页	1671K
描述
Crystal Units Surface Mount Type

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CXH49SFA10000H0QSWZZ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	ROHS COMPLIANT, RESISTANCE WELD, HERMATIC SEALED, METAL PACKAGE-2	Reach Compliance Code：	unknown
HTS代码：	8541.60.00.50	风险等级：	5.84
晶体/谐振器类型：	PARALLEL - FUNDAMENTAL	驱动电平：	10 µW
频率稳定性：	0.02%	频率容差：	100 ppm
负载电容：	12 pF	安装特点：	THROUGH HOLE MOUNT
标称工作频率：	10 MHz	最高工作温度：	125 °C
最低工作温度：	-40 °C	物理尺寸：	L11.0XB5.0XH3.5 (mm)/L0.433XB0.197XH0.138 (inch)
串联电阻：	90 Ω	表面贴装：	NO

CXH49SFA10000H0QSWZZ 数据手册

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Handling Notes

Selection of ICs and circuit constants by frequency bands

Frequency

3 to 4.9(MHz)

5 to 6.9(MHz)

7 to 9.9(MHz)

10 to 19.9(MHz)

20 to 30(MHz)

TC74HCU04A

TC7SU04F

TC7WU04FU

TC74VHCU04

TC7SHU04F

TC7WHU04FU

TC4069UB

TC4SU69F

1M

0()

1500()

470()

0()

0 to 1500

6 to 22(pF)

6 to 15(pF)

, C

*1: Necessary for preventing overtone oscillation and must be changed depending on the frequency band or the C1 and C2 values.

*2: Used to reduce excitation current of the crystal unit. Necessary for stable operation of small-sized crystal units.

*3: The optimum value differs with the values of load capacitance and Rd.

(2) CMOS overtone crystal oscillation circuit

This figure shows a standard CMOS inverter crystal oscillation circuit to oscillate a crystal unit using the overtone mode.

CMOS overtone crystal oscillation circuit

Rf = 1M

X-tal

1000pF

There are same cases when L1 and R1 are matched to the value of load capacitance.

(3) Selection of ICs and circuit constants by frequency bands

Frequency range

20 to 60(MHz)

TC74VHCU04

TC7SHU04F

TC7WHU04FU

3 to 10pF

10 to 22pF

(4) Method of selecting circuit constants and functions of elements

C1 : Forms load capacitance of the circuit together with C2, L1 and L2. A value of approx. 5pF is used.

C2 : Forms load capacitance of the circuit together with C1, L1 and L2. Prevents fundamental wave oscillation. Shall be selected

so that C2 comes between the third overtone frequency at which resonance frequency with L2 is to make oscillation and 1/3

of the third overtone frequency. A value of 10 to 22pF is used.

C3 : A bypath capacitor

L1 : A coil to adjust load capacitance of the oscillation circuit to a value near the series. A value of several µH is used.

L2 : Forms load capacitance of the circuit together with C1, C2 and L1. Prevents fundamental wave oscillation. Shall be selected

so that L2 comes between the third overtone frequency at which resonance frequency with C2 is to make oscillation and 1/3

of the third overtone frequency. A value of 10 to 22pF is used.

R1 : A Q dump resistor for L1 . As an element for preventing self-excited oscillation, A value of several k to several tens of

k is used.

* L1 and R1 might not be used.

- 56 -

1...20 21 222324 25 26 27

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