A1360_V Datasheet, PDF (9/26 Pages) Allegro MicroSystems – Low-Noise Programmable Linear Hall Effect Sensor ICs with Adjustable Bandwidth (50 kHz Maximum) and Analog Output

A1360, A1361, Low-Noise Programmable Linear Hall Effect Sensor ICs with
and A1362
Adjustable Bandwidth (50 kHz Maximum) and Analog Output
Characteristic Definitions
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, t_PO , 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, V_CC(min), as shown in the following
chart.
Rise Time (t_r) 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 / t_r. Both t_r and t_RESPONSE are detrimentally affected by eddy
current losses observed in the conductive IC ground plane.
V
V_CC(typ.)
90% V_OUT
V_CC
V_OUT
V_CC(min.)
t_PO
t₁
t₂
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
(%)
90
10
0
Applied Magnetic Field
Transducer Output
t
Rise Time, tr
0
+t
Propagation Delay Time (t_pd) 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.
Response Time (t_RESPONSE) 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.
(%)
90
Applied Magnetic Field
Transducer Output
0
t
Propagation Delay Time, t_pd
(%)
90
0
Applied Magnetic Field
Transducer Output
t
Response Time, tRESPONSE
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