A1363
Low Noise, High Precision, Programmable Linear Hall Effect Sensor IC
With Advanced Temperature Compensation and High Bandwidth (120 kHz) Analog Output
DESCRIPTION
FEATURES AND BENEFITS
• Proprietary segmented linear interpolated temperature
compensation (TC) technology provides a typical
accuracy of 1% across the full operating temperature
range
• Customer programmable, high resolution offset and
sensitivity trim
• Factory programmed sensitivity and quiescent
output voltage TC with extremely stable temperature
performance
• High sensitivity Hall element for maximum accuracy
• Extremely low noise and high resolution achieved via
proprietary Hall element and low noise amplifier circuits
• 120 kHz nominal bandwidth achieved via proprietary
packaging and chopper stabilization techniques
• Patented circuits suppress IC output spiking during fast
current step inputs
The Allegro™ A1363 programmable linear Hall-effect
current sensor IC has been designed to achieve high accuracy
and resolution without compromising bandwidth. The goal
is achieved through new proprietary linearly interpolated
temperature compensation technology that is programmed
at the Allegro factory and provides sensitivity and offset that
are virtually flat across the full operating temperature range.
Temperature compensation is done in the digital domain with
integratedEEPROMtechnology, withoutsacrificingtheanalog
signal path 120 kHz bandwidth, making this device ideal for
HEVinverter,DC-to-DCconverter,andelectricpowersteering
(EPS) applications.
ThisratiometricHall-effectsensorICprovidesavoltageoutput
thatisproportionaltotheappliedmagneticfield. Thecustomer
can conFigure the sensitivity and quiescent (zero field) output
voltage through programming on the VCC and output pins, to
optimize performance in the end application. The quiescent
output voltage is user-adjustable around 50% of the supply
voltage, VCC, and the output sensitivity is adjustable within
the range of 0.6 to 14 mV/G.
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Package: 4-pin SIP (suffix KT)
1 mm case thickness
ThesensorICincorporatesahighlysensitiveHallelementwith
aBiCMOSinterfaceintegratedcircuitthatemploysalownoise
small-signal high-gain amplifier, a clamped low-impedance
Not to scale
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V+
VCC
(Programming)
To all subcircuits
Programming
Control
Temperature
Sensor
EEPROM and
Control Logic
CBYPASS
Sensitivity Control
Offset Control
VOUT
(Programming)
Signal Recovery
CL
GND
Functional Block Diagram
A1363-DS, Rev. 6