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Электронный компонент: A1373EKB

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A1373 and A1374
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
AB SO LUTE MAX I MUM RAT INGS
Supply Voltage, V
CC
..........................................16 V
Reverse-Supply Voltage, V
RCC
........................ 16 V
Output Voltage
1
, V
OUT
....................................... 16 V
Reverse-Output Voltage, V
ROUT
.....................0.1 V
Output Current
Source,
I
OUTSOURCE
................................... 3 mA
Sink,
I
OUTSINK
.......................................... 10 mA
Operating Temperature
Ambient,
T
A
, Range E.................. 40C to 85C
Ambient,
T
A
, Range L................ 40C to 150C
Maximum
Junction,
T
J(max)
........................165C
Storage Temperature, T
S
.................. 65C to 170C
High Precision, Output Pin Programmable
Linear Hall Effect Sensors
Features and Benefits
Package KB, 3-pin SIP
The A1373 and A1374 high precision linear Hall effect sensors are sensitive, tem-
perature stable, linear devices with externally programmable features. This device
family incorporates a chopper-stabilized amplifier, voltage regulator, program-
ming logic, and an output amplifier on a single IC. The patented dynamic offset
cancellation used with a chopper-stabilization technique provides extremely low
offset and minimal temperature drift. A high frequency clock is used for chopping,
to ensure high frequency signal processing capability. The A1373 and A1374 are
ideal for use in automotive and industrial linear position-sensing applications that
require increased reliability and accuracy over conventional contacting-potentiom-
eter solutions. Key applications include: throttle position sensors, pedal position
sensors, and suspension height sensors.
The design and manufacturing flexibility of the A1373 and A1374 complement
the Allegro linear Hall effect family of devices by offering programmable gain,
quiescent offset voltage for unipolar or bipolar operation, temperature coef-
ficient, clamps, and polarity. The device can be set up in a magnetic circuit
and programmed with a train of serial pulses via the output pin. Once the right
combination of gain, quiescent output voltage, and temperature coefficient has
been selected, the codes can be locked for one-time programming. In this manner,
manufacturing tolerances can be reduced and the assembly process can be simpli-
fied.
These devices are available in the KB package, a 3-pin SIP (single inline pack-
age). The lead (Pb) free version has a 100% matte tin plated leadframe.
1
When blowing fuses during device programming, a
voltage of 28 V may be applied to VOUT.
Output pin programming
Field-programmable for optimal application integration
Selectable coarse and fine gain and quiescent output voltage
Selectable sensitivity temperature coefficient
Selectable output clamp voltage level, including no-clamp (rail-to-rail)
Selectable output polarity
Unipolar or bipolar operation
Ratiometric sensitivity, clamps, and quiescent output voltage
Chopper-stabilized Hall technique
Wide operating temperature range
On-chip regulator for over/under voltage protection
On-chip regulator provides EMI robustness
Wide lead-spacing with KB package
1
2
3
1. VCC
2. GND
3. VOUT (Programming)
2
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
High Precision, Output Pin Programmable, Linear Hall Effect Sensors
A1373 and A1374
Product Selection Guide
Functional Block Diagram
Amp
Out
VCC
Pin 3
VOUT
GND
Pin 2
Pin 1
Filter
Dynamic Of
fset
Cancellation
Gain
Temperature
Coefficient
Offset
Voltage
Regulator
Trim Control
To all subcircuits
Hall drive circuit
*Contact Allegro for additional packing options
Part Number
Pb-
free
Packing*
Ambient, T
A
(C)
A1373EKB
Bulk, 500 pcs./bag
A1373EKBT
Yes
40 to 85
A1373EKBTI
14.24-in. reel, 2000 pcs/reel
A1373EKBTIT
Yes
A1373LKB
Bulk, 500 pcs./bag
A1373LKBT
Yes
40 to 150
A1373LKBTI
14.24-in. reel, 2000 pcs/reel
A1373LKBTIT
Yes
A1374EKB
Bulk, 500 pcs./bag
A1374EKBT
Yes
40 to 85
A1374EKBTI
14.24-in. reel, 2000 pcs/reel
A1374EKBTIT
Yes
A1374LKB
Bulk, 500 pcs./bag
A1374LKBT
Yes
40 to 150
A1374LKBTI
14.24-in. reel, 2000 pcs/reel
A1374LKBTIT
Yes
3
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
High Precision, Output Pin Programmable, Linear Hall Effect Sensors
A1373 and A1374
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max
Units
ELECTRICAL CHARACTERISTICS
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Supply Voltage
V
CC
Operation within specification,
T
j
< 165C
4.5
5.0
5.5
V
Supply Current
I
CC
8.2
10
mA
Reverse-Supply Current
I
RCC
V
CC
= 16 V, T
A
= 25C
16
mA
Power-On Time
1
t
PO
C
LOAD
= 10 nF, 90% full scale V
OUT
300
s
Chopping Frequency
f
C
200
kHz
Internal Bandwidth
BW
A1373
Small signal -3 dB
2.5
kHz
A1374
20
kHz
OUTPUT CHARACTERISTICS
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Noise
2,3
V
N
A1373 peak-to-peak, C
LOAD
> 1 nF,
2.5 mV/G
6
16
mV
A1374
14
26
mV
Output Capacitance Load
C
LOAD
VOUT pin to GND pin
10
nF
Output Resistive Load
R
LOAD
4700
Phase Shift
A1373 Magnetic signal freq. = 100 Hz
3
()
A1374 Magnetic signal freq. = 1000 Hz
3
()
Output Voltage
V
OUT(Sat)HIGH
I
OUTSINK
= 1.2 mA,
B(kG) > (V
CC
V
OUT(Q)
) / Sens (mV/G)
4.65
4.7
V
V
OUT(Sat)LOW
I
OUTSOURCE
= 1.2 mA,
B(kG) < V
OUT(Q)
/ Sens (mV/G)
0.2
0.25
V
Output Resistance
R
OUT
1.5
MAGNETIC CHARACTERISTICS
Magnetic Slew Rate
SLR
V / ms / Sens
20
G/s
PRE-PROGRAMMING TARGET (Prior to coarse and fine trim)
over operating temperature range, V
CC
= 5.0 V, unless
otherwise noted
Pre-Programming Quiescent
Output Voltage
V
OUT(Q)PRE
B = 0 G, T
A
= 25C
1.62
1.80
1.98
V
Pre-Programming Sensitivity
Sens
PRE
T
A
= 25C
1.05
1.31
1.75
mV/G
Pre-Programming Sensitivity
Temperature Coefficient
TC
PRE
T
A
relative to 25C
0.016
0.05
0.104
%/C
INITIAL COARSE PROGRAMMING
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Initial Coarse Quiescent Output
Voltage
V
OUT(Q)INITLOW
T
A
= 25C
0.55
V
V
OUT(Q)INITMID
Reference V
OUT(Q)PRE
-
V
V
OUT(Q)INITHIGH
T
A
= 25C
3.25
V
Initial Coarse Sensitivity
Sens
INITLOW
Reference Sens
PRE
mV/G
Sens
INITMID
T
A
= 25C
2.8
mV/G
Sens
INITHIGH
T
A
= 25C
5.5
mV/G
CHARACTERISTIC PARAMETERS
Continued on the next page...
4
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
High Precision, Output Pin Programmable, Linear Hall Effect Sensors
A1373 and A1374
QUIESCENT OUTPUT VOLTAGE PROGRAMMING
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Quiescent Output Voltage Range
V
OUT(Q)LOW
B = 0 G, T
A
= 25C
0.7
1.9
V
V
OUT(Q)MID
2.0
3.2
V
V
OUT(Q)HIGH
3.5
4.5
V
Average Quiescent Output Voltage
Step Size
4,5,6
Step
VOUT(Q)
T
A
= 25C
3.0
3.275
3.5
mV
Quiescent Output Voltage
Programming Resolution
Err
PROGVOUT(Q)
Fine programming value selection
accuracy
0.5
Step
VOUT(Q)
mV
Quiescent Output Voltage Drift
Over Operating Temperature
Range
V
OUT(Q)
V
OUT(Q)
= V
OUT(Q)LOW
40
mV
V
OUT(Q)
= V
OUT(Q)MID
40
mV
V
OUT(Q)
= V
OUT(Q)HIGH
55
mV
Quiescent Output Voltage
Programming
Bits
Coarse (Range selection)
2
Bit
Fine (Value selection)
9
Bit
10% Output Clamp Option
7
V
OUTCLP10HIGH
A1373
High-side output clamp
4.350
4.565
V
A1374
4.300
4.650
V
V
OUTCLP10LOW
A1373
Low-side output clamp
0.4
0.6
V
A1374
0.3
0.6
V
20% Output Clamp Option
7
V
OUTCLP20HIGH
A1373
High-side output clamp
3.925
4.125
V
A1374
3.900
4.200
V
V
OUTCLP20LOW
A1373
Low-side output clamp
0.9
1.1
V
A1374
0.8
1.1
V
Delay to Clamp
t
CLP
A1373
2
s
A1374
100
s
SENSITIVITY PROGRAMMING
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Sensitivity Range
8
Sens
LOW
T
A
= 25C
1.75
2.8
mV/G
Sens
MID
3.5
5.7
mV/G
Sens
HIGH
7.0
11.25
mV/G
Average Sensitivity Step Size
4,5,6
Step
SENSLOW
T
A
= 25C
6
9.5
14
V/G
Step
SENSMID
12
18.7
28
V/G
Step
SENSHIGH
22
37.0
56
V/G
Sensitivity
Programming
Resolution
Err
PROGSENS
Fine programming value selection
accuracy
0.5
Step
SENS
V/G
Sensitivity
Programming
Bits
Coarse (Range selection)
2
Bit
Fine (Value selection)
8
Bit
POLARITY PROGRAMMING
Polarity
Programming
Bit
Negative Sensitivity
1
Bit
CHARACTERISTIC PARAMETERS (continued)
Continued on the next page...
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max
Units
5
A1373-DS, Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
High Precision, Output Pin Programmable, Linear Hall Effect Sensors
A1373 and A1374
CHARACTERISTIC PARAMETERS (continued)
SENSITIVITY TEMPERATURE COEFFICIENT PROGRAMMING
over operating temperature range, V
CC
= 5.0 V, unless
otherwise noted
Sensitivity Temperature
Coefficient Range
TC
Sensitivity T/C
codes 0 to 11,
minimum (absolute) positive
temperature coefficient attainable
0.07
%/C
Sensitivity T/C
codes 16 to 27,
minimum (absolute) negative
temperature coefficient attainable
0.016
%/C
Average Sensitivity
Temperature Coefficient Step
Size
4,5,6
Step
TC
T
A
= 150
C
0.01
%/C
Sensitivity Temperature
Coefficient Programming Bits
5
Bit
ONE-TIME PROGRAMMING
Device Programming Lock Bit
1
Bit
RATIOMETRY
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Quiescent Voltage Error
Rat
VOUT(Q)
V
CC
at V
OPERATING
0.25
%
Sensitivity Error
Rat
SENS
V
CC
at V
OPERATING
1.0
%
Clamp Error
Rat
VOUTCLP
V
CC
at V
OPERATING
1.5
%
LINEARITY
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Positive Linearity Error
Lin+
V
CC
at V
OPERATING
0.5
%
Negative Linearity Error
Lin
V
CC
at V
OPERATING
0.5
%
SYMMETRY
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Symmetry Error
Sym
V
CC
at V
OPERATING
V
CC
0.35
%
ADDITIONAL CHARACTERISTICS
Sensitivity Drift
9
Sens
2
%
FAULT CONDITIONS
over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Shorted Output Wire
I
OUTSHT
VOUT pin to VCC pin
18
mA
VOUT pin to GND pin
4
mA
1
t
PO
does not include t
CLP
, specified in the Quiescent Programming sectio n of this table.
2
Peak to peak value exceeded: 0.3% (6).
3
For A1373, no digital noise is present at the output.
4
Step size is larger than required for the specified range, to take into account manufacturing spread.
5
Individual code step sizes can be greater than 2 larger than the step size at each significant bit rollover.
6
Average fine code step size in a given range = (Output value at highest fine code in the range Output value at code 0 of the range) / Total quantity of
steps (codes) in the range.
7
Values indicated are valid if any additional magnetic field does not exceed B(kG)= 2 (V) / Sens (mv/G), after V
OUTCLP
is reached.
8
Program the
Sensitivity T/C
register before programming
Sensitivity Coarse
and
Sensitivity Fine
, due to a worst case shift of 3% in sensitivity at 25C
at the maximum values for
Sensitivity T/C: Positive T/C
and
Sensitivity T/C: Negative T/C
. The Programming Guidelines section in this document lists a
complete recommended order for programming individual values.
9
Drift due to temperature cycling is due to package effects on the Hall transducer. The stress is reduced when the package is baked. However, it will
recover over time after removal from the bake.
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max
Units