TC1025 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC1025

Linear Building Block – Dual Low Power Comparator

Microchip Technology 

TC1025

FIGURE 4-4:

SQUARE WAVE GENERATOR

VDD

R1

100k

C1

TC1025

R4

VDD

–

1/2 TC1025

+

R2

100k

R3

100k

VH

=

R2 (VDD)

R2 + (R1||R3)

VL =

(VDD) (R2||R3)

R1 + (R2||R3)

FREQ =

1

2(0.694)(R4)(C1)

FIGURE 4-5:

PULSE WIDTH MODULATOR

VDD

VC

R6

10k

C1

R1

TC1025

100k

R4

1/2 TC1025

VDD

–

+

R2

100k

R3

100k

VH =

VDD (R1R2R6 + R2R3R6) + VC (R1R2R3)

R1R2R6 + R1R3R6 + R2R3R6 + R1R2R3

VL =

VDD (R2R3R6) + VC (R1R2R3)

R1R2R6 + R1R3R6 + R2R3R6 + R1R2R3

FREQ =

1

2 (0.694) (R4) (C1)

For Square Wave Generation

Select R1 = R2 = R3

VC =

VDD

2

© 2005 Microchip Technology Inc.

DS21656C-page 7

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