A1304
Linear Hall-Effect Sensor IC with Analog Output,
Available in a Miniature, Low Profile Surface Mount Package
DESCRIPTION
FEATURES AND BENEFITS
• 3.3 V supply operation
• Allegro factory programmed offset and sensitivity
• Miniature package
• High bandwidth, low noise analog output
• High speed chopping scheme minimizes QVO drift across
operating temperature range
• Temperature-stable quiescent voltage output and
sensitivity
New applications for linear output Hall effect sensors require
mediumaccuracyandsmallerpackagesize.TheAllegroA1304
linear Hall effect sensor IC has been designed specifically to
achievebothgoals.Thistemperature-stabledeviceisavailable
in a miniature surface mount package (SOT23-W).
This ratiometric Hall effect sensor provides a voltage output
that is proportional to the applied magnetic field and features
a quiescent voltage output of 50% of the supply voltage.
• Precise recoverability after temperature cycling
• Wide ambient temperature range: –40°C to 85°C
• Immune to mechanical stress
Each BiCMOS monolithic circuit integrates a Hall element,
offset and sensitivity trim circuitry to correct for the variation
in the Hall element, a small-signal high-gain amplifier, and a
proprietary dynamic offset cancellation technique.
The A1304 sensor IC is available in a 3-pin surface mount
SOT-23W style package (LH suffix). The package is lead (Pb)
free, with 100% matte tin leadframe plating.
Package: 3-Pin Surface Mount SOT23-W
(suffix LH)
Approximate footprint
V+
VCC
VOUT
C
BYPASS
Sensitivity
Offset
Trim Control
GND
Functional Block Diagram
A1304-DS, Rev. 1