DG401 Ver la hoja de datos (PDF) - Temic Semiconductors

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componentes Descripción

Fabricante

DG401

Low-Power, High-Speed CMOS Analog Switches

Temic Semiconductors 

DG401/403/405

Applications (Cont’d)

Peak Detector:

A3 acting as a comparator provides the logic drive for

operating SW1. The output of A2 is fed back to A3 and

compared to the analog input ein. If ein > eout the output of

A3 is high keeping SW1 closed. This allows C1 to charge

up to the analog input voltage. When ein goes below eout A3

goes negative, turning SW1 off. The system will therefore

store the most positive analog input experienced.

Reset

–

ein

+A1

+A3

–

SW2

SW1

R1

+A2

–

eout

DG401

C1

Figure 12. Positive Peak Detector

10

Siliconix

S-53748—Rev. E, 05-Jun-97

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