A1361LKTTN-T Allegro Microsystems Inc, A1361LKTTN-T Datasheet - Page 11

• Manufacturer Part Number: A1361LKTTN-T
• Description: IC,HALL-EFFECT SENSOR,SINGLE-ENDED,BICMOS,SIP,4PIN,PLASTIC
• Manufacturer: Allegro Microsystems Inc
• Type: Linear - Unipolar, Bipolarr

Specifications of A1361LKTTN-T

• Sensing Range: 1.4mV/G ~ 4.5mV/G
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 12mA
• Current - Output (max): 10mA
• Output Type: Analog, Ratiometric
• Features: Programmable
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1234-2

A1360, A1361,
and A1362
Guaranteed Sensitivity Range
can be programmed around its nominal value, 0.7 to 16 mV/G
depending on device type, within the sensitivity range limits:
Sens(min) and Sens(max). Refer to the Guaranteed Quiescent
Voltage Output Range section for a conceptual explanation of
how value distributions and ranges are related.
Average Sensitivity Step Size
Voltage Output Step Size section for a conceptual explanation.
Sensitivity Programming Resolution
Voltage Output Programming Resolution section for a conceptual
explanation.
Sensitivity Temperature Coefficient
as temperature changes, with respect to its programmed sensitiv-
ity temperature coefficient, TC
150°C, and calculated relative to the nominal sensitivity program-
ming temperature of 25°C. TC
where T1 is the nominal Sens programming temperature of 25°C,
and T2 is the TC
ideal value of Sens over the full ambient temperature range,
Sens
Sens
values of Sens
values.
Sensitivity Drift Due to Package Hysteresis
relaxation can cause the device sensitivity at T
during and after temperature cycling.
For purposes of specification, the sensitivity drift due to package
hysteresis, ∆Sens
Sens
EXPECTED(TA)
EXPECTED(TA)
∆Sens
EXPECTED(TA)
TC
Sens
PKG
T1
=
SENS
and TC
PKG
, is defined as:
⎛
⎜ ⎜
⎝
should be calculated using the actual measured
=
Sens
, is defined as:
Sens
programming temperature of 150°C. The
=
Sens
T2
SENS
Sens
(25°C)2
– Sens
T1
T1
Sens
rather than programming target
SENS
SENS
Refer to the Average Quiescent
[1 + TC
The magnetic sensitivity, Sens,
T1
– Sens
(25°C)1
Adjustable Bandwidth (50 kHz Maximum) and Analog Output
×
Low-Noise Programmable Linear Hall Effect Sensor ICs with
. TC
(%/°C) is defined as:
100%
Device sensitivity changes
(25°C)1
Refer to the Quiescent
SENS
SENS
⎞
⎟ ⎟
⎠
⎛
⎜ ⎜
⎝
T2–T1
is programmed at
(T
×
A
Package stress and
1
A
100%
= 25°C to change
–T1) / 100%]
⎞
⎟ ⎟
⎠
,
,
(8)
(6)
(7)
where Sens
ity at T
T
–40°C, and back to up 25°C.
Linearity Sensitivity Error
provide a linear output in response to a ramping applied magnetic
field. Consider two magnetic fields, B1 and B2. Ideally, the sen-
sitivity of a device is the same for both fields, for a given supply
voltage and temperature. Linearity error is present when there is a
difference between the sensitivities measured at B1 and B2.
Linearity Error is calculated separately for the positive
(Lin
Linearity error (%) is measured and defined as:
where:
and B
with respect to the quiescent voltage output such that
|B
Note that unipolar devices only have positive linearity error,
Lin
A
POS2
= 25°C, after temperature cycling T
ERRPOS
ERRPOS
POSx
| = 2 ×|B
A
= 25°C, and Sens
.
and B
Lin
(25°C)1
) and negative (Lin
Lin
Lin
ERRNEG
Sens
ERRPOS
POS1
ERR
NEGx
is the programmed value of sensitiv-
Bx
| and |B
=
=
are positive and negative magnetic fields,
=
=
max( Lin
|V
⎛
⎜ ⎜
⎝
⎛
⎜ ⎜
⎝
1–
1–
(25°C)2
OUT(Bx)
NEG2
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
The 136x family is designed to
Sens
Sens
Sens
Sens
ERRNEG
ERRPOS
| = 2 ×|B
BNEG1
BPOS2
BPOS1
BNEG2
is the value of sensitivity at
B
–
x
V
OUT(Q)
) applied magnetic fields.
⎞
⎟ ⎟
⎠
⎞
⎟ ⎟
⎠
, Lin
A
×
×
NEG1
up to 150°C, down to
100%
100%
ERRNEG
|
|. Then:
,
,
,
)
.
(10)
(11)
(9)
11