A1186 Allegro MicroSystems, A1186 Datasheet - Page 3

• Manufacturer Part Number: A1186
• Description: (A1185 / A1186) Unipolar Hall-Effect Switches
• Manufacturer: Allegro MicroSystems

A1185-DS, Rev. 1
ELECTRICAL CHARACTERISTICS
Supply Voltage
Supply Current
Supply Zener Clamp Voltage
Supply Zener Clamp Current
Reverse Supply Current
Output Slew Rate
Chopping Frequency
Power-On Time
Power-On State
1
2
polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present).
3
4
5
6
device performance.
7
MAGNETIC CHARACTERISTICS
Programmable Operate Point Range
Initial Operate Point Range
Switchpoint Step Size
Number of Programming Bits
Temperature Drift of B
Hysteresis
1
polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present).
2
V
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
I
Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change.
Measured with and without bypass capacitor of 0.01 μF. Adding a larger bypass capacitor causes longer Power-On Time.
POS is defined as true only with a V
POS is undefined for t > t
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
The range of values specified for B
ZSUPPLY(max)
CC
Ultrasensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
represents the generated voltage between the VCC pin and the GND pin.
Characteristic
Characteristic
= I
CCL(max)
1
2
5
6,7
4
2
OP
+ 3 mA.
on
or B
3
RP
< B < B
RES
CC
is a maximum, derived from the cumulative programming bit errors.
Symbol
V
slew rate of 25 mV / μs or greater. Operation with a V
I
I
ZSupply
I
POS
ZSupply
CC(H)
I
di/dt
V
CC(L)
1
RCC
OP
t
f
on
CC
C
over the operating voltage and temperature ranges, unless otherwise specified
Symbol
B
.
over the operating voltage and temperature ranges, unless otherwise specified
B
OPrange
ΔB
B
B
OPinit
RES
HYS
–
OP
Device powered on
B >B
B >B
I
V
V
No bypass capacitor; capacitance of the
oscilloscope performing the measurement
= 20 pF
After factory trimming; with and without
bypass capacitor (C
t
CC
on
Supply
RCC
A1185 and A1186
≤ t
I
I
V
V
Switchpoint setting
Programming locking
B
= I
CC
CC
OP
OP
CC
CC
HYS
on(max)
= –18 V
CC(L)(Max)
= I
= I
= 28 V
= 12 V
= 5 V, T
for A1185; B <B
for A1186; B <B
= B
CC(L)
CC(H)
;
OP
V
Test Conditions
CC
A
+ 3 mA; T
Test Conditions
for A1185
– B
for A1186
= 25°C
slew rate > 25 mV/μs
RP
BYP
RP
RP
= 0.01 μF)
A
for A1186
for A1185
= 25°C
CC
slew rate less than 25 mV / μs can permanently harm
Min.
Min.
3.5
12
28
10
5
–
–
–
–
–
–
–
2
–
–
–
5
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
HIGH
Typ.
Typ.
200
–10
36
15
–
–
–
–
–
–
–
–
4
5
1
–
Max.
Max.
±20
6.9
9.9
1.6
24
17
40
25
60
10
30
–
–
–
6
–
–
mA/μs
Units
Units
kHz
mA
mA
mA
mA
Bit
Bit
μs
G
G
G
G
G
V
V
–
3