A1369 Datasheet, PDF (1/22 Pages) Allegro MicroSystems – Customer Programmable Linear Hall-Effect Sensor

A1369
Customer Programmable Linear Hall-Effect Sensor
Optimized for Use in Current Sensing Applications
FEATURES AND BENEFITS
• Customer programmable offset, and sensitivity
• Sensitivity & QVO temperature coefficients programmed
at Allegro for improved accuracy
• Output value decreases with South Magnetic Field and
increases with North Magnetic field.
• 3-pin SIP package for easy integration with magnetic
concentrator
• Low noise, moderate bandwidth, analog output
• High speed chopping scheme minimizes QVO drift over
temperature
• Temperature-stable quiescent voltage output and
sensitivity
• Precise recoverability after temperature cycling
• Output voltage clamps provide short circuit diagnostic
capabilities
• Under voltage lock-out (UVLO)
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Package: 3-Pin SIP (suffix UA)
Not to scale
DESCRIPTION
The Allegro™ A1369 is a customer programmable, high
accuracy linear Hall effect-based current sensor IC. It is
packaged in a thin 3-pin SIP package to allow for easy integration
with a magnetic core to create a highly accurate current sensing
module. The programmable nature of the A1369 enables it
to account for manufacturing tolerances in the final current
sensing module assembly.
This temperature-stable device is available in a through-hole
single in-line package (TO-92). The accuracy of the device
is enhanced via programmability on the output pin for end-
of-line optimization without the added complexity and cost of
a fully programmable device. The device features One-Time-
Programming (OTP), using non-volatile memory, to optimize
device sensitivity and the quiescent output voltage (QVO)
(output with no magnetic field) for a given application or
circuit. The A1369 also allow for optimized performance over
temperature through programming the temperature coefficient
for both Sensitivity and QVO at Allegro end of line test.
These ratiometric Hall effect sensor ICs provide a voltage
output that is proportional to the applied magnetic field. The
quiescent voltage output is user adjustable around 50% of the
supply voltage and the output sensitivity is programmable
within a range of 8.5 mV/G to 12.5 mV/G for the A1369-10
and 22 mV/G to 26 mV/G for the A1369-24.
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V+
V_CC
V_OUT/
Programming
Sensitivity and
Sensitivity TC
Offset and
Offset TC
Trim Control
GND
A1369-DS, Rev. 1
Functional Block Drawing