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

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V+
EEPROM and
Control Logic
VCC (Programming)
GND
VOUT
(Programming)
Signal Recovery
6-Bit Programmable Window Comparator
Internal
Pull-Up
6 bits
0.88 × Vto 0.72 × V
CC
CC
0.12 × Vto 0.28 × V
CC
CC
V(High)
REF
COMP_IN
V(Low)
REF
Temperature
Sensor
Offset Control
Sensitivity Control
Programming
Control
+
+
FAULT
CBYPASS
The A1365 linear output Hall-effect sensor IC is specifically
designed to provide a highly accurate output with improved
resolution at high bandwidth for use in current-sensing
applications. This device employs a segmented, linearly
interpolated temperature compensation technology, which
provides greater accuracy in sensitivity and offset voltage
trimming and hence virtually zero temperature drift. This
improvementgreatlyreducesthetotalerrorofthedeviceacross
the operating temperature range.
The highly programmable Over Field Fault signal (FAULT
pin) can be used to detect a high magnetic field condition.
Broken ground wire detection, undervoltage lockout for VCC
below specification, and user-selectable output voltage clamps
are also included, which are important for high reliability in
automotive applications. The sensor accuracy and diagnostic
capability make it ideally suited for automotive sockets such
as HEV inverter and DC-to-DC converter applications.
The A1365 Hall-effect sensor IC is extremely sensitive, fast,
and temperature-stable. The accuracy and flexibility of this
device is enhanced by user programmability, performed via
the VCC supply and the output pins, which allows the device
to be optimized in the application.
ThisratiometricHall-effectsensorICprovidesavoltageoutput
thatis proportionalto the appliedmagneticfield.The quiescent
output voltage is user-adjustable around 50% (bidirectional) of
A1365-GS-DS
• Proprietary segmented linear temperature compensation
(TC) technology provides a typical accuracy of 1% over
the full operating temperature range
• 120 kHz nominal bandwidth achieved via proprietary
packaging and chopper stabilization techniques
• Over Field Fault signal with 6-bit programmable trigger
levels, 2-bit programmable hysteresis, and latching or
non-latching behavior
• Over Field Fault response time < 4.5 μs (typ)
• Extremely low noise and high resolution achieved via
proprietary Hall element and low-noise amplifier circuits
• Customer-programmable, high-resolution offset and
sensitivity trim
• Available in a 1-mm-thick SIP through-hole package
• Factory-programmed sensitivity and quiescent
output voltage TC with extremely stable temperature
performance
Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC
With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator
Functional Block Diagram
A1365
Continued on the next page…
Continued on the next page…
PACKAGE:
4-Pin SIP (suffix KT)
Not to scale
FEATURES AND BENEFITS
DESCRIPTION


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