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A1365LKTTN-1-T Datasheet(PDF) 23 Page - Allegro MicroSystems

Part No. A1365LKTTN-1-T
Description  Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A1365LKTTN-1-T Datasheet(HTML) 23 Page - Allegro MicroSystems

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Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator
A1365
23
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
A Fault Overstep is defined as the amount by which the output
voltage exceeds the delta between VOUT(Q) and the DC Fault
Switchpoint (VFPSP and VFNSP). The larger the overstep caused
by an input magnetic field is, the faster tTFR will be. When VFPSP
and VFNSP are programmed near their limits, the maximum Fault
Overstep will be limited because VOUT will be reaching satura-
tion levels (see Figure 19).
Faults can be latched by setting the FAULT_LATCH bit high.
After a fault occurs, the ¯F¯¯A¯¯U¯¯L¯¯T¯ pin will be held low. To reset the
¯F¯¯A¯¯U¯¯L¯¯T¯ pin, the A1365 must be powered down.
Over Magnetic Field Fault can be disabled by setting the
FLT_DIS bit.
Figure 19: Transient Fault Response Time versus Fault Overstep Voltage at VCC = 5 V, CF = 0 F, RL = Open.
11
9
7
5
2
05
0.75
5.5
10
20
15
V
Overstep (%)
Fault
Worst Process Corner
when V= 0.1 × V
FNSP
CC
Worst Process Corner
when V= 0.9 × V
FPSP
CC
Typical Process Corner
when V> 0.2 × V
FNSP
CC
FPSP
CC
and V< 0.8 × V
Worst Process Corner
when V> 0.17 × V
FNSP
CC
FPSP
CC
and V< 0.87 × V


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