SM5073 데이터 시트보기 (PDF) - Nippon Precision Circuits

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SM5073

VCXO ICs with Built-in Varicap

Nippon Precision Circuits  

SM5073 series

VCXO ICs with Built-in Varicap

OVERVIEW

The SM5073 series are VCXO ICs with built-in varicap diode. They use a recently developed negative-resis-

tance switching oscillation circuit, at oscillation startup and during normal oscillation, for both good oscilla-

tion startup characteristics and wide pullrange. Furthermore, it employs a CMOS process varicap diode, and

also features all the necessary VCXO structure circuit components on a single chip, forming a VCXO with just

the connection of an external crystal.

FEATURES

PACKAGE DIMENSIONS

I 3.0 to 3.6V supply voltage range

I 10MHz to 60MHz operating frequency

(varies with version)

I Uses negative-resistance switching function

I Varicap diode built-in

I Frequency divider built-in (varies with version: fO,

fO/2, fO/4, fO/8, fO/16, fO/32)

I CMOS output level

I 50 ± 10% output duty

I 6mA (min) output drive capability

I 15pF output load capacitance CL

I Standby function

High impedance in standby mode

(oscillator continues running)

I Package: 8-pin SOP (SM5073××S)

APPLICATIONS

I VCXO modules

I Communications application

I Networking application

I Broadcasting application

(Unit: mm)

0.695typ

5.2 0.3

1.27

0.10

0.4 0.1 0.12 M

0.15

+

−

0.1

0.05

0 to 10

SERIES LINEUP

Version

SM5073A×S

SM5073B×S

SM5073C×S

SM5073D×S

SM5073E×S

SM5073F×S

Typical oscillation

frequency1 [MHz]

16

23

30

37

44

51

SM5073×1S

fO

Output frequency

SM5073×2S2 SM5073×3S2 SM5073×4S2 SM5073×5S2 SM5073×6S2

fO/2

fO/4

fO/8

fO/16

fO/32

1. The typical oscillation frequency is the oscillation frequency criteria for use when selecting the device version. Note that the oscillation

characteristics and pullability vary with the crystal used and the mounting conditions. Even for the same frequency, the optimal version can vary

with crystal characteristics, so careful evaluation should be exercised when selecting the device version.

2. These versions are produced after receiving a purchase order. Please ask our Sales & Marketing section for further detail.

ORDERING INFORMATION

Device

SM5073××S

Package

8-pin SOP

SEIKO NPC CORPORATION —1

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