A1421LK-T Allegro Microsystems Inc, A1421LK-T Datasheet - Page 4

• Manufacturer Part Number: A1421LK-T
• Description: IC,HALL-EFFECT SENSOR,SINGLE-ENDED,SIP,4PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Special Purposer

Specifications of A1421LK-T

• Rohs Compliant: YES
• Sensing Range: 27.5G Trip, -12.5G Release
• Voltage - Supply: 4 V ~ 26.5 V
• Current - Supply: 7mA
• Current - Output (max): 25mA
• Output Type: Digital, Open Collector
• Features: High Precision
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Magnetic Type: Monolithic
• Operating Supply Voltage (min): 4V
• Operating Supply Voltage (typ): 12V
• Operating Supply Voltage (max): 26.5V
• Output Current: 25mA
• Mag Sensor Operate Point (g): 27.5Gs
• Mag Sensor Release Point (g): -12.5Gs
• Mag Sensor Hysteresis(g): 15Gs
• Package Type: SIP
• Pin Count: 4
• Mounting: Through Hole
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A1421, A1422,
and
1
2
3
4
5
6
7
OPERATING CHARACTERISTICS, continued
within operating range, unless otherwise noted. Typical operating parameters: V
MAGNETIC CHARACTERISTICS
Operate Point
Release Point
Hysteresis
Applied Magnetic Field
I
Time required to initialize device.
Time required for the output switchpoints to be within specifi cation.
Output Rise Time will be dominated by the RC time constant.
For lower frequencies, the absolute values of B
See Defi nitions of Terms section.
Exceeding the maximum magnetic fi eld may result in compromised absolute accuracy.
CC
is equivalent to I
Characteristic
A1423
CC(max)
7
+ 3 mA.
Symbol
B
B
B
B
HYS
OP
RP
diff
5,6
1421, B
V
1422, B
V
1423, B
V
1421, B
V
1422, B
V
1423, B
V
1421, f
1422, f
1423, f
Differential p-p magnetic field
OUT
OUT
OUT
OUT
OUT
OUT
High Precision Hall Effect AC-Coupled Differential
OP
switches from low (on) to high (off)
switches from high (off) to low (on)
switches from high (off) to low (on)
switches from high (off) to low (on)
switches from low (on) to high (off)
switches from low (on) to high (off)
, B
Bdiff
Bdiff
Bdiff
diff
diff
diff
diff
diff
diff
RP
increasing, f
increasing, f
increasing, f
decreasing, f
decreasing, f
decreasing, f
, and B
= 200 Hz, B
= 200 Hz, B
= 200 Hz, B
Valid at T
HYS
Sensor IC with Integrated Filter Capacitor
may decrease due to delay induced by the high-pass fi lter.
Bdiff
Bdiff
Bdiff
Test Conditions
diff
diff
Bdiff
Bdiff
Bdiff
diff
A
= – 40
= 50 Gp-p
= 50 Gp-p
= 200 Hz, B
= 200 Hz, B
= 200 Hz, B
= 200 Gp-p
= 200 Hz, B
= 200 Hz, B
= 200 Hz, B
º
C to 150
diff
diff
diff
diff
diff
diff
º
CC
C, T
= 50 Gp-p
= 50 Gp-p
= 200 Gp-p
= 50 Gp-p
= 50 Gp-p
= 200 Gp-p
= 12 V and T
J
≤ 165°C; over operational air gap range and V
A
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
= 25°C.
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
–12.5
–35.0
–100
Min.
10.0
0.0
5.0
5
–
–
–
–15.0
–65.0
Typ.
15.0
15.0
65.0
130
0.0
15
30
–
100.0
–10.0
Max.
1250
27.5
35.0
–5.0
7.5
35
–
–
Units
G
G
G
G
G
G
G
G
G
G
CC
4