ETC MT1322AT

MT1322 Series
CMOS, Omni-polar, Low Power Hall Sensor
Applications
Features and Benefits
CMOS Technology
Magnetic
Type: Omni-polar
Operating Voltage Range:
Supply Voltage 2.2~5.5V
Specified Operating Temperature Range:
From –40 ~85
High Magnetic Sensitivity
Bop=18Gauss, Brp=10Gauss (South)
Bop=-18Gauss, Brp=-10Gauss (North)
Lower Power Consumption
Average Supply Current <4uA (typical)
Lead Free Package
Flat TO-92, SOT-23
High ESD Rating
Internal 100K Pull -up Resistor
RoHS Compliant
2011/65/EU
Smart meter
Hand held Devices
℃ ℃
Family Members
Part number
Description
MT1322A
Flat TO-92 package, bulk packaging (1000pcs /bag)
MT1322A-T
Flat TO-92 package, Radial lead, bulk packaging (1000pcs/bag)
MT1322AT
SOT-23 package, tape and reel packaging (3000pcs/bag)
General Description
The MT1322 family, produced with CMOS technology, The Hall IC internally includes an on-chip Hall
voltage generator, a voltage regulator for operation with supply voltages of 2.2 to 5.5V, sleep/awake logic
for low power consumption, temperature compensation circuitry, small-signal amplifier, Hall sensor with
dynamic offset cancellation system, Schmitt trigger and an output driver with a100K pull-up resistor.
They are designed to respond to a either a North pole or a South pole. While the magnetic flux density(B)
is larger than operate point (Bop), the output will be turned on (Low), While the magnetic flux density(B) is
lower than release point (Brp), then turn off (High).
The MT1322 family provides a variety of packages to customers: SOT-23 for surface mount and TO-92 flat
for through-hole mount. All packages are RoHS compliant.
www.magntek.de
Rev.3 01/2014
01/08
MT1322 Series
CMOS, Omni-polar, Low Power Hall Sensor
Vs
Sleep/Awake
Bias
Reference
Dynamic offset
OSC
Logic
R
cancellation
ESD
VOUT
Output
ITA
element
COMP
ESD
Hall
Stage
GND
Functional Block Diagram
Function Description
Definition of Magnetic Parameters
BOP:
Operating Point
Magnetic flux density applied on the branded side of the package which
turns the output driver ON (VOUT = Low)
BRP:
Release Point
Magnetic flux density applied on the branded side of the package which
turns the output driver OFF (VOUT = high)
BHYST: Hysteresis Window
BOP-BRP
Definition of Switching Function
North Pole
BOP
BRP
Output (V)
Output (V)
0
0
Switching Behavior
www.magntek.de
Rev.3 01/2014
02/08
BRP
BOP
South Pole
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
OR
OR
N
S
S
Motion
N
N
S
O
N
R
S
O
R
OUT=Low
OUT=High
OUT=Low
Switching Point of AT
OUT=High
Switching Point of A
Direction of magnetic flux
Note:
Pin Description
MT1322A (MT1322A-T)
MT1322AT
Name
Number
Description
Name
Number
Description
Vs
1
Power
GND
3
Ground
Vs
GND
1
2
Power
Ground
Output
2
Include pull-up resistor
Output
3
Include pull-up resistor
www.magntek.de
Rev.3 01/2014
03/08
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
Electrical and Magnetic Characteristics
Absolute Maximum Ratings
Absolute maximum ratings are limiting values to be applied individually, and beyond which the serviceability of the
circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating
conditions for an extended period of time may affect device reliability.
Absolute maximum ratings: all voltages listed are referenced to GND.
Symbol
Parameters
Min
Max
Units
VS
Supply Voltage
-
5.5
V
VRCC
Reverse Battery Voltage
-
-0.5
V
VOUT
Output Voltage
-
5.5
V
IOUT
Continuous output current
-
10
mA
TA
Operating Ambient Temperature
-40
85
Ts
Storage temperature
-50
150
TJ
Junction temperature
-
150
B
Magnetic flux
℃
℃
℃
No Limit
Gauss
MT1322 Series Specifications
at TA = -40
℃ to 85 ℃, Vs = 2.2V to 5.5V (unless otherwise specified)
Symbol
Parameter
Test Condition
Min
VS
Supply Voltage
Operating
2.2
IS(AVG)
IS(EN)
Supply Current
IS(DIS)
Typ
Max
Units
5.5
V
B<BRP , Vs=3.6V
-
4
6
uA
Chip awake, B<BRP , Vs=3.6V
-
2
3
mA
Chip asleep, B<BRP, Vs=3.6V
-
2
3
uA
VSON
Output Saturation VoltageI
B>BOP
-
-
0.4
V
IOFF
Output Leakage Current
B<BRP, VOUT=5V
-
-
0.1
uA
TAW
Awake Time
VS =3.6V
30
50
70
uS
TSL
Sleep Time
VS =3.6V
30
35
40
mS
D.C.
Duty Cycle
-
0.17
-
%
BOP
Magnetic Operating Point
+/-13
+/-18
+/-23
Gauss
BRP
Magnetic Release Point
+/-5
+/-10
+/-15
Gauss
BHYST
Hysteresis Window
-
8
-
Gauss
ESD
Electro-Static Discharge
-
4
-
KV
www.magntek.de
Rev.3 01/2014
∣B
∣
OP-BRP
HBM
04/08
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
Typical Application Circuit
VS
VDD
100nf
MT1322
OUT
20pf
GND
Typical Output Waveform
(The TO-92 package as an example )
BOPS
BRPS
Magnetic Field
BRPN
BOPN
ICC(EN)
Supply Current
ICC(DIS)
High
Digital Output
Low
www.magntek.de
Rev.3 01/2014
05/08
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
PACKAGE DESIGNATOR
(MT1322A) TO-92 Flat
Symbol
A
A1
b
b1
C
D
D1
E
e
e1
L
θ
www.magntek.de
Rev.3 01/2014
Dimensions in Millimeters
Min
Max
1.420
1.620
0.660
0.860
0.350
0.480
0.400
0.550
0.360
0.510
3.900
4.200
2.970
3.270
2.870
3.124
1.270 TYP.
2.440
2.640
13.600
15.500
45°TYP.
06/08
Dimensions in Inches
Min
Max
0.056
0.064
0.026
0.034
0.014
0.019
0.016
0.022
0.014
0.020
0.154
0.165
0.117
0.129
0.113
0.123
0.050 TYP.
0.096
0.104
0.535
0.610
45°TYP.
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
PACKAGE DESIGNATOR
(MT1322A-T) Flat TO-92 Radial lead
Symbol
A
A1
b
b1
C
D
D1
E
e
e1
L
L1
θ
www.magntek.de
Rev.3 01/2014
Dimensions in Millimeters
Min
Max
1.420
1.620
0.660
0.860
0.350
0.480
0.400
0.550
0.360
0.510
3.900
4.200
2.970
3.270
2.870
3.124
2.540 TYP.
5.080 TYP.
14.300 REF.
2.150 REF.
45°TYP.
07/08
Dimensions in Inches
Min
Max
0.056
0.064
0.026
0.034
0.014
0.019
0.016
0.022
0.014
0.020
0.154
0.165
0.117
0.129
0.113
0.123
0.100 TYP.
0.200 TYP.
0.563 REF.
0.085 REF.
45°TYP.
MT1322 Series
CMOS Omni-polar, Low Power Hall Sensor
PACKAGE DESIGNATOR
(MT1322AT) SOT-23-3L
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
www.magntek.de
Rev.3 01/2014
Dimensions in Millimeters
Min
Max
1.050
1.250
0.000
0.100
1.050
1.150
0.300
0.500
0.100
0.200
2.820
3.020
1.500
1.700
2.650
2.950
0.950 TYP.
1.800
2.000
0.300
0.600
0°
8°
08/08
Dimensions in Inches
Min
Max
0.041
0.049
0.000
0.004
0.041
0.045
0.012
0.020
0.004
0.008
0.111
0.119
0.059
0.067
0.104
0.116
0.037 TYP.
0.071
0.079
0.012
0.024
0°
8°