A1220, A1221, A1222, and A1223
2
-
Chopper-Stabilized Precision Hall-Effect Latches
FEATURES AND BENEFITS DESCRIPTION
AEC-Q100 automotive qualified The A1220, A1221, A1222, and A1223 Hall-effect sensor ICs
Quality Managed (QM), ISO 26262:2011 compliant are extremely temperature-stable and stress-resistant devices
Symmetrical latch switchpoints especially suited for operation over extended temperature ranges
Resistant to physical stress to 150C. Superior high-temperature performance is made
Superior temperature stability possible through dynamic offset cancellation, which reduces the
Output short-circuit protection residual offset voltage normally caused by device overmolding,
Operation from unregulated supply down to 3 V temperature dependencies, and thermal stress. Each device
Reverse-battery protection includes on a single silicon chip a voltage regulator, Hall-
Solid-state reliability voltage generator, small-signal amplifier, chopper stabilization,
Small package sizes Schmitt trigger, and a short-circuit protected open-drain output
to sink up to 25 mA. A south pole of sufficient strength turns
the output on. A north pole of sufficient strength is necessary
PACKAGES:
to turn the output off.
Not to scale
An onboard regulator permits operation with supply voltages
of 3 to 24 V. The advantage of operating down to 3 V is that
the device can be used in 3 V applications or with additional
NOT FOR
external resistance in series with the supply pin for greater
NEW DESIGN
protection against high voltage transient events.
Two package styles provide magnetically optimized packages
for most applications. Package type LH is a modified 3-pin
3-pin SOT23W
SOT23W surface-mount package, while UA is a three-pin
(suffix LH)
ultra-mini SIP for through-hole mounting. Both packages are
3-pin SIP, 3-pin SIP,
lead (Pb) free, with 100% matte-tin-plated leadframes.
matrix HD style chopper style
(suffix UA) (suffix UA)
FUNCTIONAL BLOCK DIAGRAM
VCC
Regulator
To All Subcircuits
VOUT
Low-Pass
Filter
Amp Control
Current Limit
GND
A1220-DS, Rev. 20 October 12, 2018
MCO-0000309
Dynamic Offset
Cancellation
Sample and HoldA1220, A1221,
Chopper-Stabilized Precision Hall-Effect Latches
A1222, and A1223
SELECTION GUIDE
[1]
Part Number Packing Mounting Ambient, T B (Min) B (Max)
A RP OP
A1220ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
[2]
A1220ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
[3]
A1220EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
40 G 40 G
A1220LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
[2]
A1220LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 150C
[3]
A1220LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1221ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
[2]
A1221ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
[3]
A1221EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
90 G 90 G
A1221LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
[2]
A1221LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 40C to 150C
[3]
A1221LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1222ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
[2]
A1222ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
A1222EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
150 G 150 G
A1222LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
[2]
A1222LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 150C
A1222LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1223ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
[2]
A1223ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
A1223EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
180 G 180 G
A1223LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
[2]
A1223LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 150C
A1223LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
[1]
Contact Allegro for additional packing options.
[2]
Available through authorized Allegro distributors only.
[3]
The chopper-style UA package is not for new design; the matrix HD style UA package is recommended for new designs.
RoHS
COMPLIANT
2
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com