KA2822CD datasheet(10/14 Pages) FAIRCHILD

10 / 14 page

KA2822CD

Electrical Characteristics (Continued)

(Ta=25

°C, VCC=5V, unless otherwise specified)

Notes:

Design reference value

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

CHARGE PUMP

Charge current

ICP−

RPM=L

−15

−20

−25

µA

Discharge current

ICP+

RPM=L

µA

Current ratio note

ICP+ / ICP−

0.9

1.0

1.1

Off current

IOFF

VCP=0.63V

Clamp voltage note

VCLP

1.3

1.5

FG AMP

Output DC voltage note

VFG

1.0

1.3

1.6

Voltage gain 2

GFG

-24

Input voltage range note

VIN

-2.0

mVP-P

Noise margin 1 note

Differential noise

0.5

mVP-P

Noise margin 2 note

Common mode noise

0.5

VP-P

SPEED CONTROL

Count range 1note

RPM=L

1666.5

Count range 2 note

RPM=H

1388.5

Operating freq.

1.0

1.1

MHz

BURST ADJUSTMENT

Input current

IBI

µA

Threshold voltage 1

VTH1

RPM=L

1.2

1.45

1.7

Threshold voltage 2

VTH2

RPM=H

1.05

1.3

1.55

PULSE WIDTH ADJUSMENT

Ct2 charge current

ICT2

−19

−25

−36

µA

Threshold voltage 3

VTH3

0.9

1.1

1.3

INDEX OUTPUT

Output leakage current note

IOH

µA

Output low voltage

VO1

IO=1mA

0.2

0.4

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