MCP65R46T datasheet(23/36 Pages) MICROCHIP

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DS20002269C-page 23

MCP65R41/6

4.3.1

NONINVERTING CIRCUIT

Figure 4-4 shows a noninverting circuit for single-

supply applications using just two resistors. The

resulting hysteresis diagram is shown in Figure 4-5.

FIGURE 4-4:

Noninverting Circuit with

Hysteresis for Single-Supply.

FIGURE 4-5:

Hysteresis Diagram for the

Noninverting Circuit.

The trip points for Figures 4-4 and 4-5 are:

EXAMPLE 4-1:

4.3.2

INVERTING CIRCUIT

Figure 4-6 shows an inverting circuit for single-supply

using three resistors. The resulting hysteresis diagram

is shown in Figure 4-7.

FIGURE 4-6:

Inverting Circuit with

Hysteresis.

FIGURE 4-7:

Hysteresis Diagram for the

Inverting Circuit.

VREF

VIN

VOUT

VDD

VPU

RPU*

VREF

* Pull-up resistor required for the MCP65R46 only.

VOUT

High-to-Low

Low-to-High

VDD

VOH

VOL

VSS

VDD

VTHL VTLH

VIN

VTLH

VREF 1

-------







VOL

-------







–

VTHL

VREF 1

-------







VOH

-------







–

Where:

VTLH = trip voltage from low to high

VTHL = trip voltage from high to low

VIN

VOUT

VDD

VREF

VPU

RPU*

* Pull-up resistor required for the MCP65R46 only.

VOUT

High-to-Low

Low-to-High

VDD

VOH

VOL

VSS

VDD

VTLH VTHL

VIN

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