MCP6566RT datasheet(21/44 Pages) MICROCHIP

tên linh kiện	MCP6566RT

Giải thích chi tiết về linh kiện	1.8V Low Power Open-Drain Output Comparator

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DS22143B-page 21

MCP6566/6R/6U/7/9

4.9

Typical Applications

4.9.1

PRECISE COMPARATOR

Some applications require higher DC precision. An

easy way to solve this problem is to use an amplifier

(such as the MCP6291) to gain-up the input signal

before it reaches the comparator. Figure 4-12 shows

an example of this approach.

FIGURE 4-12:

Precise Inverting

Comparator.

4.9.2

WINDOWED COMPARATOR

Figure 4-13 shows one approach to designing a

windowed comparator. The AND gate produces a logic

‘1’ when the input voltage is between VRB and VRT

(where VRT > VRB).

FIGURE 4-13:

Windowed Comparator.

4.9.3

BISTABLE MULTI-VIBRATOR

A simple bistable multi-vibrator design is shown in

Figure 4-14. VREF needs to be between the power

supplies (VSS = GND and VDD) to achieve oscillation.

The output duty cycle changes with VREF.

FIGURE 4-14:

Bistable Multi-vibrator.

VREF

VDD

VOUT

VIN

VREF

MCP6291

VPU

RPU

MCP656X

VRT

VRB

VIN

VPU

RPU

VOUT

1/2

MCP6567

1/2

MCP6567

VDD

VREF

VOUT

VPU

RPU

MCP656X

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