Programmable Linear Hall Effect Sensor ICs with Analog Output
Available in a Miniature Thin Profile Surface Mount Package
A1381, A1382,
A1383, and A1384
5
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ERROR COMPONENTS
Linearity Sensitivity Error
LinERR
–
±1.5
–
%
Symmetry Sensitivity Error
SymERR
–
±1.5
–
%
Ratiometry Quiescent Voltage
Output Error13
RatERRVOUT(Q)
–
±1.5
–
%
Ratiometry Sensitivity Error13
RatERRSens
–
±1.5
–
%
Ratiometry Clamp Error14
RatERRCLP
TA = 25°C
–
±1.5
–
%
DRIFT CHARACTERISTICS
Quiescent Voltage Output Drift
Through Temperature Range
VOUT(Q)
A1381
TA = 150°C
–
±60
mV
A1382
–
±50
mV
A1383
–
±40
mV
A1384
–
±40
mV
Sensitivity Drift Through
Temperature Range15
SensTC
–±3
–
%
Sensitivity Drift Due to Package
Hysteresis1
SensPKG
TA = 25°C; after temperature cycling
–
±2
–
%
1See Characteristic Definitions section.
2fC varies up to approximately ± 20% over the full operating ambient temperature range, TA, and process.
3Unit of measure (phase degrees) in reference to the magnetic input signal.
4Sens, VOUT(Q), VCLP(LOW), and VCLP(HIGH) scale with VCC due to ratiometry.
5Raw device characteristic values before any programming.
6Programmed at 150°C and calculated relative to 25°C.
7VOUT(Q)(max) is the value available with all programming fuses blown (maximum programming code set). The VOUT(Q) range is the total range from
VOUT(Q)init up to and including VOUT(Q)(max). See Characteristic Definitions section.
8Step size is larger than required, in order to provide for manufacturing spread. See Characteristic Definitions section.
9Non-ideal behavior in the programming DAC can cause the step size at each significant bit rollover code to be greater than twice the maximum
specified value of StepVOUT(Q), StepSENS, or StepTCSENS.
10Overall programming value accuracy. See Characteristic Definitions section.
11Sens(max) is the value available with all programming fuses blown (maximum programming code set). Sens range is the total range from Sensinit up
to and including Sens(max). See Characteristic Definitions section.
12Default polarity is for VOUT voltage to increase with a positive (south polarity) field applied to the branded face of the device.
13Percent change from actual value at VCC = 5 V, for a given temperature, over the guaranteed supply voltage operating range.
14Percent change from actual value at VCC = 5 V, TA = 25°C, over the guaranteed supply voltage operating range.
15Sensitivity drift from expected value at TA after programming TCSENS. See Characteristic Definitions section.
OPERATING CHARACTERISTICS (continued), valid over full operating temperature range,TA; CBYPASS= 0.1 μF, VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units