A1101, A1102, A1103, A1104, and A1106
Continuous-Time Switch Family
FEATURES AND BENEFITS DESCRIPTION
AEC-Q100 automotive qualified The Allegro A1101-A1104 and A1106 Hall-effect switches
Continuous-time operation are next generation replacements for the popular Allegro
Fast power-on time 312x and 314x lines of unipolar switches. The A110x family,
Low noise produced with BiCMOS technology, consists of devices that
Stable operation over full operating temperature range feature fast power-on time and low-noise operation. Device
Reverse battery protection programming is performed after packaging, to ensure increased
Solid-state reliability switchpoint accuracy by eliminating offsets that can be induced
Factory-programmed at end-of-line for optimum by package stress. Unique Hall element geometries and low-
performance offset amplifiers help to minimize noise and to reduce the
Robust EMC performance residual offset voltage normally caused by device overmolding,
High ESD rating temperature excursions, and thermal stress.
Regulator stability without a bypass capacitor
The A1101-A1104 and A1106 Hall-effect switches include
the following on a single silicon chip: voltage regulator, Hall-
PACKAGES:
voltage generator, small-signal amplifier, Schmitt trigger, and
Not to scale
NMOS output transistor. The integrated voltage regulator
permits operation from 3.8 to 24 V. The extensive on-board
protection circuitry makes possible a 30 V absolute maximum
voltage rating for superior protection in automotive and
industrial motor commutation applications, without adding
NOT FOR
external components. All devices in the family are identical
NEW DESIGN
except for magnetic switchpoint levels.
The small geometries of the BiCMOS process allow these
devices to be provided in ultrasmall packages. The package
3-pin SOT23W
(suffix LH) styles available provide magnetically optimized solutions for
most applications. Package LH is an SOT23W, a miniature low-
3-pin SIP, 3-pin SIP,
matrix HD style chopper style
profile surface-mount package, while package UA is a three-lead
(suffix UA) (suffix UA)
ultramini SIP for through-hole mounting. Each package is lead
(Pb) free, with 100% matte-tin-plated leadframes.
VCC
Regulator To all subcircuits
VOUT
Amp
Gain Offset
Trim
Control
GND
Functional Block Diagram
A1101-DS, Rev. 17 October 27, 2016A1101, A1102, A1103,
Continuous-Time Switch Family
A1104, and A1106
SPECIFICATIONS
SELECTION GUIDE
[1]
Part Number Packing Mounting Ambient, T B (Min) B (Max)
A RP OP
A1101ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
A1101ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
[2]
A1101EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
10 175
A1101LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
40C to
A1101LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
150C
[2]
A1101LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1102ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
A1102ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount 40C to 85C
[2]
A1102EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
60 245
A1102LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
40C to
A1102LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
150C
[2]
A1102LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1103ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
40C to 85C
A1103ELHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
A1103LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount 150 355
40C to
A1103LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
150C
[2]
A1103LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
[2]
A1104EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 40C to 85C
A1104LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
25 450
40C to
A1104LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
150C
[2]
A1104LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1106EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole 40C to 85C
A1106LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
160 430
40C to
A1106LLHLX-T 13-in. reel, 10000 pieces/reel 3-pin SOT23W surface mount
150C
A1106LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
1
Contact Allegro for additional packing options.
2
The chopper-style UA package is not for new design; the matrix HD style UA package is recommended for new designs.
ABSOLUTE MAXIMUM RATINGS
Characteristic Symbol Notes Rating Units
Supply Voltage V 30 V
CC
Reverse Supply Voltage V 30 V
RCC
Output Off Voltage V 30 V
OUT
Reverse Output Voltage V 0.5 V
ROUT
Output Current I 25 mA
OUTSINK
Magnetic Flux Density B Unlimited G
Range E 40 to 85 C
Operating Ambient Temperature T
A
Range L 40 to 150 C
Maximum Junction Temperature T (max) 165 C
J
Storage Temperature T 65 to 170 C
stg
Allegro MicroSystems, LLC
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com