Datasheet > CF5037C2

CF5037C2

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
NPC		振荡器
页数	文件大小	规格书
10页	94K
描述
2.5V LVDS Output Oscillator ICs

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数据手册

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CF5037C2 数据手册

CF5037 series

BLOCK DIAGRAM

VCC

XIN

VCC2

OUT

Colpitts

OSC

1/2

LVDS

OUTN

XOUT

GND

OSCILLATOR CIRCUIT CONSTANT

The CF5037 series oscillator setting varies with device version to optimize characteristics over the recom-

mended operating frequency range.

*1 *2

Built-in capacitance

[pF]

Recommended operating

*2 *3

Version

Oscillation mode

frequency range

[MHz]

XOUT

XIN

CF5037A1

CF5037B×

CF5037C×

CF5037D×

CF5037E×

CF5037F×

80 to 120

100 to 180

150 to 250

250 to 400

(400 to 600)

(600 to 700)

Fundamental

3rd overtone

Fundamental

(5)

(4)

(5)

(4)

*1. The oscillator internal capacitance values includes parasitic capacitance.

*2. Values in parentheses ( ) are provisional only.

*3. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. How-

ever, the oscillator frequency band is not guaranteed. Speciﬁcally, the characteristics can vary greatly due to crystal characteristics

and mounting conditions, so the oscillation characteristics of components must be carefully evaluated.

Oscillator Equivalent Circuit

C0 cancel

CXIN

XIN

RPD1

CXOUT

XOUT

Oscillator block equivalent circuit

The CF5037 series oscillator circuit has a C0 cancel circuit built-in to improve the oscillator margin. If power is applied when there is an

open circuit between XIN and XOUT, self oscillation may occur, which is not abnormal. Users should conﬁrm that the oscillator operates

normally when a crystal unit is connected.

SEIKO NPC CORPORATION —3

1 234 5 6 7...10

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