Electronic Components Datasheet Search |
|
A1326LLHLT- Datasheet(PDF) 5 Page - Allegro MicroSystems |
|
A1326LLHLT- Datasheet(HTML) 5 Page - Allegro MicroSystems |
5 / 12 page Linear Hall Effect Sensor ICs with Analog Output A1324, A1325, and A1326 5 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com Power-On Time When the supply is ramped to its operating voltage, the device output requires a finite time to react to an input magnetic field. Power-On Time is defined as the time it takes for the output voltage to begin responding to an applied magnetic field after the power supply has reached its minimum specified operating voltage, VCC(min). V +t VCC VCC(min.) VOUT 90% VOUT 0 t1= time at which power supply reaches minimum specified operating voltage t2= time at which output voltage settles within ±10% of its steady state value under an applied magnetic field t1 t2 tPO VCC(typ.) Quiescent Voltage Output In the quiescent state (that is, with no significant magnetic field: B = 0), the output, VOUT(Q), equals a ratio of the supply voltage, VCC, throughout the entire operat- ing range of VCC and the ambient temperature, TA. Quiescent Voltage Output Drift Through Temperature Range Due to internal component tolerances and thermal con- siderations, the quiescent voltage output, VOUT(Q), may drift from its nominal value through the operating ambient temperature range, TA. For purposes of specification, the Quiescent Voltage Output Drift Through Temperature Range, ∆VOUT(Q) (mV), is defined as: ∆VOUT(Q) VOUT(Q)TA– VOUT(Q)25°C = (1) Sensitivity The presence of a south-polarity magnetic field perpendicular to the branded surface of the package increases the output voltage from its quiescent value toward the supply voltage rail. The amount of the output voltage increase is proportional to the magnitude of the magnetic field applied. Conversely, the application of a north polarity field will decrease the output volt- age from its quiescent value. This proportionality is specified as the magnetic sensitivity, Sens (mV/G), of the device and is defined as: VOUT(B+) – VOUT(B–) B(+) – B(–) Sens = (2) where B(+) and B(–) are two magnetic fields with opposite polarities. Sensitivity Temperature Coefficient The device sensitivity changes with temperature, with respect to its sensitivity tem- perature coefficient, TCSENS. TCSENS is programmed at 150°C, and calculated relative to the nominal sensitivity programming temperature of 25°C. TCSENS (%/°C) is defined as: SensT2 – SensT1 SensT1 T2–T1 1 TCSens = ×100% (3) where T1 is the nominal Sens programming temperature of 25°C, and T2 is the TCSENS programming temperature of 150°C. The ideal value of sensitivity through the temperature range, SensIDEAL(TA), is defined as: SensT1 × (100% + TCSENS(TA–T1) ) SensIDEAL(TA) = (4) Sensitivity Drift Through Temperature Range Second order sensitivity temperature coefficient effects cause the mag- netic sensitivity to drift from its ideal value through the operating ambient temperature, TA. For purposes of specification, the sensi- tivity drift through temperature range, ∆SensTC, is defined as: SensTA– SensIDEAL(TA) SensIDEAL(TA) ∆SensTC = ×100% (5) Sensitivity Drift Due to Package Hysteresis Package stress and relaxation can cause the device sensitivity at TA = 25°C to change during or after temperature cycling. This change in sensitivity follows a hysteresis curve. For purposes of specification, the Sensitivity Drift Due to Pack- age Hysteresis, ∆SensPKG, is defined as: Sens(25°C)2 – Sens(25°C)1 Sens(25°C)1 ∆SensPKG = ×100% (6) where Sens(25°C)1 is the programmed value of sensitivity at Characteristic Definitions |
Similar Part No. - A1326LLHLT- |
|
Similar Description - A1326LLHLT- |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |