A1146 Allegro MicroSystems, A1146 Datasheet - Page 2

• Manufacturer Part Number: A1146
• Description: (A1145 / A1146) Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
• Manufacturer: Allegro MicroSystems

A1145
A1146
Description (continued)
feature on-chip transient protection and a Zener clamp to protect
against overvoltage conditions on the supply line.
The output currents of the A1146 switches HIGH in the presence
of a south (+) polarity magnetic field of sufficient strength, and
switches LOW otherwise, as in the presence of a weak field or a
north (–) polarity field. The A1145 has an opposite output: the
currents switch LOW in the presence of a south-polarity magnetic
Absolute Maximum Ratings
Selection Guide
A1145ELHLT-T
A1145EUA-T
A1145EUATI
A1145EUATI-T
A1145LLHLT-T
A1145LUA-T
A1145LUATI
A1145LUATI-T
A1146ELHLT-T
A1146EUA-T
A1146EUATI
A1146EUATI-T
A1146LLHLT-T
A1146LUA-T
A1146LUATI
A1146LUATI-T
1
LAST TIME BUY. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not
be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status change:
October 31, 2006. Deadlilne for receipt of LAST TIME BUY ORDERS: April 27, 2007. These variants include: A1145ELHLT, A1145EUA, A1145LLHLT,
A1145LUA, A1146ELHLT, A1146EUA, A1146LLHLT, and A1146LUA.
2
3
Supply Voltage
Reverse Supply Voltage
Magnetic Flux Density
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Pb-based variants are being phased out of the product line. Certain variants cited in this footnote are in production but have been determined to be
Contact Allegro for additional packing options.
South (+) magnetic fields must be of sufficient strength.
Part Number
Characteristic
and
Pb-Free
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
–
–
–
–
1
Tape and Reel, 3000 pieces/reel
Bulk Bag, 500 pieces/bag
Tape and Reel, 2000 pieces/reel
Tape and Reel, 3000 pieces/reel
Bulk Bag, 500 pieces/bag
Tape and Reel, 2000 pieces/reel
Tape and Reel, 3000 pieces/reel
Bulk Bag, 500 pieces/bag
Tape and Reel, 2000 pieces/reel
Tape and Reel, 3000 pieces/reel
Bulk Bag, 500 pieces/bag
Tape and Reel, 2000 pieces/reel
Symbol
T
J
V
V
(max)
T
RCC
T
B
stg
CC
A
Ultrasensitive Two-Wire Chopper-Stabilized
Packing
Range E
Range L
2
field of sufficient strength, and switch HIGH otherwise.
Both versions are offered in two package styles. The LH is a SOT-
23W, miniature low-profile package for surface-mount applications.
The UA is a three-lead ultramini SIP for through-hole mounting.
Each package is available in a lead (Pb) free version (suffix, –T)
with 100% matte tin plated leadframe. Field-programmable versions
also available: A1185 and A1186.
Notes
Unipolar Hall Effect Switches
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Through Hole
Through Hole
Through Hole
Through Hole
Package
115 Northeast Cutoff, Box 15036
Operating Ambient
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Temperature, T
–40 to 150
–65 to 170
–40 to 150
–40 to 150
Unlimited
–40 to 85
–40 to 85
–40 to 85
Rating
–18
165
(°C)
28
A
Units
ºC
ºC
ºC
ºC
G
V
V
Output Level in
South (+) Field
High
Low
3
2