A1321 Просмотр технического описания (PDF) - Allegro MicroSystems

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A1321

Ratiometric Linear Hall Effect Sensor ICs for High-Temperature Operation

Allegro MicroSystems 

A1321, A1322,

and A1323

Ratiometric Linear Hall Effect Sensor ICs

for High-Temperature Operation

MAGNETIC CHARACTERISTICS1,2 over operating temperature range, TA; VCC = 5 V, Iout = –1 mA; unless otherwise noted

Characteristics

Symbol

Test Condition

Min

Typ3

Max Units4

Sensitivity5

Delta Vout(q) as a func-

tion of temperature

Sens

Vout(q)(ΔT)

A1321; TA = 25ºC

A1322; TA = 25ºC

A1323; TA = 25ºC

Defined in terms of magnetic flux density, B

4.750

2.969

2.375

–

5.000

3.125

2.500

–

5.250

3.281

2.625

±10

mV/G

mV/G

mV/G

G

Ratiometry, Vout(q)

Ratiometry, Sens

Positive Linearity

Vout(q)(ΔV)

ΔSens(ΔV)

Lin+

–

–

±1.5

%

–

–

±1.5

%

–

–

±1.5

%

Negative Linearity

Lin–

–

–

±1.5

%

Symmetry

Sym

–

–

±1.5

%

UA Package

Delta Sens at TA = max5 ΔSens(TAmax) From hot to room temperature

–2.5

–

7.5

%

Delta Sens at TA = min5 ΔSens(TAmin) From cold to room temperature

–6

–

4

%

Sensitivity Drift6

SensDrift TA = 25°C; after temperature cycling and over time

–

±2

–

%

LH Package

Delta Sens at TA = max5 ΔSens(TAmax) From hot to room temperature

–5

–

5

%

Delta Sens at TA = min5 ΔSens(TAmin) From cold to room temperature

–3.5

–

8.5

%

Sensitivity Drift6

SensDrift TA = 25°C; after temperature cycling and over time

–

±2

–

%

1 Additional information on characteristics is provided in the section Characteristics Definitions, on the next page.

2 Negative current is defined as conventional current coming out of (sourced from) the specified device terminal.

3 Typical data is at TA = 25°C, except for ΔSens, and at x.x Sens. Typical data are for initial design estimations only, and assume optimum

manufacturing and application conditions. Performance may vary for individual units, within the specified maximum and minimum limits.

In addition, the typical values vary with gain.

4 10 G = 1 millitesla.

5 After 150ºC pre-bake and factory programming.

6 Sensitivity drift is the amount of recovery with time.

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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