A1360 datasheet(9/25 Pages) ALLEGRO | Low-Noise Programmable Linear Hall Effect Sensor ICs with

9 / 25 page

A1360, A1361,

and A1362

Propagation Delay Time (tpd) The time required for the device

output to reflect a change in the applied magnetic field. Propaga-

tion delay can be considered as a fixed time offset and may be

compensated.

Applied Magnetic Field

Transducer Output

(%)

Propagation Delay Time, t

Transducer Output

Response Time, tRESPONSE

(%)

Applied Magnetic Field

Transducer Output

Rise Time, tr

(%)

Applied Magnetic Field

Characteristic Definitions

Rise Time (tr) The time interval between a) when the device

reaches 10% of its full scale value, and b) when it reaches 90%

of its full scale value. The rise time to a step response is used to

derive the bandwidth of the linear device, in which ƒ(–3 dB) =

0.35 / tr. Both tr and tRESPONSE are detrimentally affected by eddy

current losses observed in the conductive IC ground plane.

Response Time (tRESPONSE) The time interval between a) when

the applied magnetic field reaches 90% of its final value, and b)

when the device reaches 90% of its output corresponding to the

applied magnetic field.

VCC

VCC(min.)

VOUT

90% VOUT

t1= time at which power supply reaches

minimum specified operating voltage

t2= time at which output voltage settles

within ±10% of its steady state value

under an applied magnetic field

tPO

VCC(typ.)

Power-On Time

When the supply is ramped to its operating volt-

age, the device requires a finite time to power its internal com-

ponents before responding to an input magnetic field. Power-On

Time, tPO, is defined as: the time it takes for the output voltage

to settle within ±10% of its steady state value under an applied

magnetic field, after the power supply has reached its minimum

specified operating voltage, VCC(min), as shown in the following

chart.

Low-Noise Programmable Linear Hall Effect Sensor ICs with

Adjustable Bandwidth (50 kHz Maximum) and Analog Output

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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