A3250 ALLEGRO [Allegro MicroSystems], A3250 Datasheet - Page 12

• Manufacturer Part Number: A3250
• Description: Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches
• Manufacturer: ALLEGRO [Allegro MicroSystems]

For additional general application information, visit the Allegro
MicroSystems Web site at www. allegromicro.com.
Typical Application Circuit
It is strongly recommended that an external ceramic bypass
capacitor, C
between the VCC pin and the supply and GND pin to reduce
both external noise and noise generated by the chopper-stabiliza-
tion technique. (The diagram at the right shows C
C
A3250/A3251 are no greater than 5 mm in length.
The series resistor R
for EMI pulses. (Additional information on EMC is provided
on the Allegro MicroSystems Web site.) R
of approximately 800 mV. This must be taken into consider-
ation when determining the minimum VCC requirement for the
A3250/A3251. The pull-up resistor, R
limit the current through the output transistor; do not exceed the
maximum continuous output current of the device.
A3250-DS
BYP
should be installed so that the traces that connect it to the
BYP
Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches
, in the range of 0.01 µF to 0.1 µF be connected
S
, in combination with C
L
, should be chosen to
S
will have a drop
BYP
creates a filter
A3250 and A3251
BYP
Application Information
at 0.1 µF.)
Typical application circuit
A
V
Maximum separation 5 mm
from C
Supply
R
100 Ω
S
BYP
to device
C
0.1 µF
BYP
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
A
A
A3250/A3251
VCC
GND
VOUT
5V
R
1.2 kΩ
L
12