A1148 Allegro MicroSystems, A1148 Datasheet - Page 2

• Manufacturer Part Number: A1148
• Description: (A1147 / A1148) Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
• Manufacturer: Allegro MicroSystems

A1147
A1148
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 A1148 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 A1147 has an opposite output: the
currents switch LOW in the presence of a south-polarity magnetic
Absolute Maximum Ratings
A1147ELHLT-T
A1147EUA-T
A1147EUATI
A1147EUATI-T
A1147LLHLT-T
A1147LUA-T
A1147LUATI
A1147LUATI-T
A1148ELHLT-T
A1148EUA-T
A1148EUATI
A1148EUATI-T
A1148LLHLT-T
A1148LUA-T
A1148LUATI
A1148LUATI-T
1
a. Certain variants cited in this footnote are in production but have been determined to be 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 obso-
lescence 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: A1147ELHLT, A1147EUA, A1147LLHLT, A1147LUA, A1148ELHLT, A1148EUA, and, A1148LLHLT.
b. Certain variants cited in this footnote are in production but have been determined to be NOT FOR NEW DESIGN. 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: May 1, 2006. These variants include: A1148LUA.
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.
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
Chopper-Stabilized Unipolar Hall Effect Switches
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
V
J
V
(max)
T
T
RCC
B
CC
stg
A
Packing
Range E
Range L
2
Low Current Ultrasensitive Two-Wire
Selection Guide
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: A1180 and A1181.
Notes
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