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A1354KKTTN-T Datasheet(PDF) 4 Page - Allegro MicroSystems |
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A1354KKTTN-T Datasheet(HTML) 4 Page - Allegro MicroSystems |
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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