Ultra-Sensitive Dual-Channel Quadrature
Hall-Effect Bipolar Switch
A1230
4
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
OPERATING CHARACTERISTICS: valid over operating temperature ranges unless otherwise noted; typical data applies to
V
CC
= 12 V, and T
A
= 25ºC
Characteristic Symbol Test Conditions Min. Typ. Max. Unit
1
ELECTRICAL CHARACTERISTICS
Supply Voltage
2
V
CC
Operating; T
A
≤ 150°C 3.3 – 18 V
Output Leakage Current I
OUTPUT(OFF)
Either output – < 1 10 μA
Supply Current
I
CC(OFF)
B < B
RP(A)
,B < B
RP(B)
– 3.5 6.0 mA
I
CC(ON)
B > B
OP(A)
,B > B
OP(B)
– 3.5 6.0 mA
Low Output Voltage V
OUTPUT(ON)
Both outputs; I
OUTPUT(SINK)
= 20 mA; B > B
OP(A)
, B >
B
OP(B)
– 160 500 mV
Output Sink Current I
OUTPUT(SINK)
– – 20 mA
Output Sink Current, Continuous
3
I
OUTPUT(SINK)C
T
J
< T
J(max)
,V
OUTPUT
= 12 V – – 70 mA
Output Sink Current, Peak
4
I
OUTPUT(SINK)P
t < 3 seconds – – 220 mA
Chopping Frequency f
C
– 780 – kHz
Output Rise Time t
r
C
LOAD
= 20 pF, R
LOAD
= 820 Ω – 1.8 – µs
Output Fall Time t
f
C
LOAD
= 20 pF, R
LOAD
= 820 Ω – 1.2 – µs
Power-On Time t
ON
B > 40 G or B < –40 G – 15 – µs
Power-Off Time t
OFF
B > 40 G or B < –40 G – 25 – µs
Power-On State POS B = 0 G – Low – –
TRANSIENT PROTECTION CHARACTERISTICS
Supply Zener Voltage V
Z
I
CC
= 9 mA, T
A
= 25°C 28 – – V
Supply Zener Current
5
I
Z
V
S
= 28 V – – 9.0 mA
Reverse-Battery Current I
RCC
V
RCC
= –18 V, T
J
< T
J(max)
– 2 15 mA
MAGNETIC CHARACTERISTICS
6
Operate Point: B > B
OP
B
OP(A)
, B
OP(B)
– 7 30 G
Release Point: B < B
RP
B
RP(A)
, B
RP(B)
–30 –7 – G
Hysteresis: B
OP(A)
– B
RP(A)
,
B
OP(B)
– B
RP(B)
B
HYS(A)
, B
HYS(B)
5 14 35 G
Symmetry: Channel A, Channel B,
B
OP(A)
+ B
RP(A)
,
B
OP(B)
+ B
RP(B)
SYM
A
, SYM
B
–35 – 35 G
Operate Symmetry: B
OP(A)
– B
OP(B)
SYM
AB(OP)
–25 – 25 G
Release Symmetry: B
RP(A)
– B
RP(B)
SYM
AB(RP)
–25 – 25 G
1
1 G (gauss) = 0.1 mT (millitesla).
2
When operating at maximum voltage, never exceed maximum junction temperature, T
J
(max). Refer to power derating curve charts.
3
Device will survive the current level specified, but operation within magnetic specification cannot be guaranteed.
4
Short circuit of the output to VCC is protected for the time duration specified.
5
Maximum specification limit is equivalent to I
CC(max)
+ 3 mA.
6
Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields. This so-called
algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated by the absolute value of B,
and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but opposite polarity).