Datasheet A1321, A1322, A1323 (Allegro) - 6

A1321, A1322, Ratiometric Linear Hall Effect Sensor ICs and A1323 for High-Temperature Operation MAGNETIC CHARACTERISTICS
1,2 over operating temperature range, TA; VCC = 5 V, Iout = –1 mA; unless otherwise noted
Characteristics Symbol Test Condition Min Typ3 Max Units4
A1321; TA = 25ºC 4.750 5.000 5.250 mV/G Sensitivity5 Sens A1322; TA = 25ºC 2.969 3.125 3.281 mV/G A1323; TA = 25ºC 2.375 2.500 2.625 mV/G Delta Vout(q) as a func- V tion of temperature out(q)(ΔT) Defi ned in terms of magnetic fl ux density, B – – ±10 G Ratiometry, Vout(q) Vout(q)(ΔV) – – ±1.5 % Ratiometry, Sens ΔSens(ΔV) – – ±1.5 % Positive Linearity Lin+ – – ±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 Defi nitions, on the next page. 2 Negative current is defi ned as conventional current coming out of (sourced from) the specifi ed 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 specifi ed 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