NJU6682 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU6682

160-common x 132-segment DOT MATRIX LCD DRIVER FOR 4 GRAY SCALE

Japan Radio Corporation  

NJU6682

*11:As for power supply VREG, provide by the error of the VLCD output with the electronic volume.

It use the measurement system shown below.

VDD

Ra

VR

Rb

V5

XΩ

V

XΩ

VREG%=(VREAL-VIDEAL)/VIDEALX100

- VIDEAL means a ideal value and VREAL

means a measurement value.

- As for the calculation of VIDEAL, refer to

voltage adjustment circuit (6-9-11), the

voltage

adjustment circuit (6-9-11) which used an

electronic volume function.

Vout

*12:The voltage change by the output current prescribes a range within Vlcd X 5%. VLCD=12.0V;(VDD-Vout)=16.0V.

It define a measurement system shown below.

*:Vn shows either of V1-V5 measurement terminal. V/F current supply performance is reduceed to the

minimize because of the low consumption current.

Therefore, when measuring, the current which flows through the voltmeter in the figure, too, becomes not able

to be ignored. When measuring, it requeire enough consideration.

V

Vn

A

V5

Measurement circuit for

Source current

VDD

A

V

Vn

Measurement circuit for

Sink current

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