FS9922-DMM4-DS-11 Ver la hoja de datos (PDF) - Unspecified

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Fabricante

FS9922-DMM4-DS-11

Integrated Circuits of 6,000 Counts Auto-ranging Digital Multimeter with Bar Graph

Unspecified 

FS9922-DMM4

VGG

15k

ICL8069A

15k

REFI

20k

FS9922-DMM4

Diagram 12: The Utility of External Base Power Source

12.6 Trigger Reset Circuit

VDD R5

100k

S7

RST

RST

C7

0.1uF

FS9922-DMM4

Diagram 13: Reset Circuit

Note: 1. R5 and C7 are the components for reset, which will automatically reset when power on.

2. S7 is the key for manual reset. May not use it if the manual reset function is not

necessary.

12.7 Oscillation Circuit

CX1

XOUT

R6 OSC1

1M 4MHz

XIN

CX2

FS9922-DMM4

Diagram 14: Oscillation Circuit

In the diagram, R6 is the reverser to provide the static working point; CX2 is the fine adjustment of frequency;

CX1 is temperature offset. In less requirements situation, CX1 and CX2 can be unused.

Rev. 1.1

19/39

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