A1321,A1322,A1323LLHLT-T

Part No.:
A1321,A1322,A1323LLHLT-T
Download:
Download
Description:
Ratiometric Linear Hall Effect Sensor for High-Temperature Operation
File Size:
319 K
Page:
11 Pages
Logo:
Maker:
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
PCB Prototype

July 19, 2018:

A22-GR

A22K1V1

A30315RSZQ

A3973SLB-T

A-4455-AZ18A

A6267KLPTR-T

A6E-0104

A-70216-0246

A-70400-0186

A-70475-2177

A-A71395-0164

ACE724

PCB Datasheet:1PCB Datasheet:1
A1321, A1322, and A1323
Ratiometric Linear Hall Effect Sensor
for High-Temperature Operation
Features and Benefits
Temperature-stable quiescent output voltage
Precise recoverability after temperature cycling
Output voltage proportional to magnetic flux density
Ratiometric rail-to-rail output
Improved sensitivity
4.5 to 5.5 V operation
Immunity to mechanical stress
Solid-state reliability
Robust EMC protection
Description
The A132X family of linear Hall-effect sensors are optimized,
sensitive, and temperature-stable. These ratiometric Hall-effect
sensors provide a voltage output that is proportional to the
applied magnetic field. The A132X family has a quiescent
output voltage that is 50% of the supply voltage and output
sensitivity options of 2.5mV/G, 3.125mV/G, and 5mV/G. The
features of this family of devices are ideal for use in the harsh
environments found in automotive and industrial linear and
rotary position sensing systems.
Each device has a BiCMOS monolithic circuit which integrates
a Hall element, improved temperature-compensating circuitry
to reduce the intrinsic sensitivity drift of the Hall element,
a small-signal high-gain amplifier, and a rail-to-rail low-
impedance output stage.
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
A proprietary dynamic offset cancellation technique, with
an internal high-frequency clock, reduces the residual offset
voltage normally caused by device overmolding, temperature
dependencies, and thermal stress. The high frequency clock
allows for a greater sampling rate, which results in higher
accuracy and faster signal processing capability. This technique
produces devices that have an extremely stable quiescent output
voltage, are immune to mechanical stress, and have precise
Continued on the next page…
Not to scale
Functional Block Diagram
V+
VCC
Dynamic Offset
Cancellation
Filter
Amp
Out
VOUT
Gain
0.1
μF
Offset
Trim
Control
GND
A1321-DS, Rev. 8