DESCRIPTION
The APS12205, APS12215, and APS12235 Hall-effect sensor
ICs are extremely temperature-stable and stress-resistant
devices especially suited for operation over extended junction
temperature ranges up to 175°C. Superior high-temperature
performance is made possible through dynamic offset
cancellation, which reduces the residual offset voltage normally
caused by device overmolding, temperature dependencies, and
thermal stress.
The single silicon chip includes: a Hall plate, small signal
amplifier, chopper stabilization, Schmitt trigger, and a short-
circuit-protected open-drain output. A south pole of sufficient
strength turns the output on; a north pole of sufficient strength
is necessary to turn the output off. For applications requiring
operation from greater than 5.5 V or operation directly from
a battery, refer to the A1220, A1221, or A1223.
Two package styles provide a choice of through-hole or surface
mounting. Package type LH is a modified 3-pin SOT23W
surface-mount package, while UA is a three-pin ultramini SIP
for through-hole mounting. Both packages are lead (Pb) free,
with 100% matte-tin-plated leadframes.
APS12205-15-35-DS, Rev. 2
FEATURES AND BENEFITS
• Optimized for applications with regulated power rails
□ Operation from 2.8 to 5.5 V
• AEC-Q100 automotive qualified
• Operation up to 175°C junction temperature
• Dynamic offset cancellation
□ Resistant to physical stress
□ Superior temperature stability
• Symmetrical latch switchpoints
• Output short-circuit protection
• Solid-state reliability
• Industry-standard packages and pinouts
High-Temperature Hall-Effect Latches
for Low Voltage Applications
PACKAGES:
Functional Block Diagram
Not to scale
APS12205, APS12215,
and APS12235
3-pin SOT23W
(suffix LH)
3-pin SIP
(suffix UA)
GND
VCC
VOUT
Control
Current Limit
Dynamic Offset
Cancellation
Sample and Hold
To All Subcircuits
Amp
Low-Pass
Filter
