HA17901 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HA17901

Quadruple Comparators

Hitachi -> Renesas Electronics 

HA17901, HA17339 Series

HA17901 Application Examples

The HA17901 houses four independent comparators in a single package, and operates over a wide voltage

range at low power from a single-voltage power supply. Since the common-mode input voltage range starts

at the ground potential, the HA17901 is particularly suited for single-voltage power supply applications.

This section presents several sample HA17901 applications.

HA17901 Application Notes

1. Square-Wave Oscillator

The circuit shown in figure one has the same structure as a single-voltage power supply astable

multivibrator. Figure 2 shows the waveforms generated by this circuit.

100k

VCC

4.3k

75pF

C

R

VCC

–

HA17901

VCC

+

100k

Vout

100k

100k

Figure 1 Square-Wave Oscillator

(1)

Horizontal: 2 V/div, Vertical: 5 µs/div, VCC = 5 V

(2)

Horizontal: 5 V/div, Vertical: 5 µs/div, VCC = 15 V

Figure 2 Operating Waveforms

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