A1354KKTTN-T datasheet(4/22 Pages) ALLEGRO

Part #	A1354KKTTN-T

Description	High Precision 2-Wire Linear Hall Effect Sensor IC with Pulse Width Modulated Output

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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4 / 22 page

PROGRAMMING CHARACTERISTICS Valid over full operating voltage range and TA= 25°C, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ.

Max.

Unit1

PRE-PROGRAMMING TARGET2

Pre-Programming Quiescent Duty Cycle

Output

D(Q)PRE

B = 0 G

–

50

–

%

Pre-Programming Sensitivity

SensPRE

–

0.08

–

%/G

Pre-Programming PWM Output Carrier

Frequency

fPWMPRE

–

150

–

Hz

QUIESCENT DUTY CYCLE PROGRAMMING

Initial Quiescent Duty Cycle Output3

D(Q)UNIinit Unipolar device, B = 0 G

–

20

–

%

D(Q)BIinit

Bipolar device, B = 0 G

–

D(Q)PRE

–%

Guaranteed Quiescent Duty Cycle

Programming Range4

D(Q)UNI

Unipolar device, B = 0 G

10

–

30

%

D(Q)BI

Bipolar device, B = 0 G

40

–

60

%

Quiescent Duty Cycle Output5

Programming Bits

Coarse (range programming)

–

1

–

bit

Fine (value adjustment)

–

9

–

bit

Average Quiescent Duty Cycle Output

Step Size6,7

StepD(Q)

0.055

0.075

0.095

%

Quiescent Duty Cycle Output

Programming Resolution8

ErrPGD(Q)

–

StepD(Q)

× ±0.5

–%

SENSITIVITY PROGRAMMING

Initial Sensitivity

Sensinit

–

SensPRE

–

%/G

Guaranteed Sensitivity Programming

Range9

Sens

0.1

–

0.2

%/G

Sensitivity Programming Bits

–

8

–

bit

Average Sensitivity Step Size6,7

StepSENS

600

800

900

μ

%/G

Sensitivity Programming Resolution8

ErrPGSENS

–

StepSENS

× ±0.5

–

μ

%/G

CARRIER FREQUENCY PROGRAMMING

Initial Carrier Frequency

fPWM(slow)init

–19–

Hz

fPWM(fast)init

–fPWMPRE

–Hz

Guaranteed Carrier Frequency

Programming Range9

fPWM(slow)

12

–

15.5

Hz

fPWM(fast)

95

–

115

Hz

Coarse Carrier Frequency Programming

Bits10

Coarse (range programming)

–

1

–

bit

Fine (value adjustment)

–

4

–

bit

Average Carrier Frequency Step Size6,7

StepfPWM(slow)

0.5

0.8

1.1

Hz

StepfPWM(fast)

4.5

6.4

8.3

Hz

Carrier Frequency Programming

Resolution8

ErrPGfPWM

–

StepfPWM

× ±0.5

–Hz

Continued on the next page…

High Precision 2-Wire Linear Hall Effect Sensor IC

with Pulse Width Modulated Output

A1354

4

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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