A1373LKB datasheet(5/23 Pages) ALLEGRO

5 / 23 page

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, VCC=5.0 V, unless

otherwise noted

Sensitivity Temperature

Coefficient Range

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

Size4,5,6

StepTC

TA = 150°C

–

0.01

–

%/°C

Sensitivity Temperature

Coefficient Programming Bits

––

–

Bit

ONE-TIME PROGRAMMING

Device Programming Lock Bit

–

Bit

RATIOMETRY

over operating temperature range, VCC=5.0 V, unless otherwise noted

Quiescent Voltage Error

RatVOUT(Q)

VCC at VOPERATING

–

±0.25

–%

Sensitivity Error

RatSENS

VCC at VOPERATING

–

±1.0

–%

Clamp Error

RatVOUTCLP

VCC at VOPERATING

–

±1.5

–%

LINEARITY

over operating temperature range, VCC=5.0 V, unless otherwise noted

Positive Linearity Error

Lin+

VCC at VOPERATING

–

±0.5

–%

Negative Linearity Error

Lin–

VCC at VOPERATING

–

±0.5

–%

SYMMETRY

over operating temperature range, VCC=5.0 V, unless otherwise noted

Symmetry Error

Sym

VCC at VOPERATING – VCC

–

±0.35

–

ADDITIONAL CHARACTERISTICS

Sensitivity Drift9

ΔSens

–

±2

FAULT CONDITIONS

over operating temperature range, VCC=5.0 V, unless otherwise noted

Shorted Output Wire

IOUTSHT

VOUT pin to VCC pin

–

VOUT pin to GND pin

–

1 tPO does not include tCLP, specified in the Quiescent Programming section of this table.

2 Peak to peak value exceeded: 0.3% (6σ).

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 VOUTCLP 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 25°C

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.

9Drift 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

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