L2724 데이터 시트보기 (PDF) - STMicroelectronics

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L2724

LOW DROP DUAL POWER OPERATIONAL AMPLIFIERS

STMicroelectronics 

L2720/2/4

APPLICATION SUGGESTION

In order to avoid possible instability occuring into fi-

nal stage the usual suggestions for the linear power

stages are useful, as for instance :

- layout accuracy ;

- A 100nF capacitor connected between supply

pins and ground ;

- boucherot cell (0.1 to 0.2 µF + 1Ω series) be-

tween outputs and ground or across the load.

With single supply operation, a resistor (1kΩ)

between the output and supply pin can be

necessary for stability.

Figure 8 : Bidirectional DC Motor Control with µP Compatible Inputs

VS1 = logic supply voltage

Must be VS2 > VS1

E1, E2 = logic inputs

Figure 9 : Servocontrol for Compact-disc

Figure 10 : Capstan Motor Control in Video

Recorders

Figure 11 : Motor Current Control Circuit

Note : The input voltage level is compatible with L291 (8 - BIT D/A converter)

5/10

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