tle4997i Infineon Technologies Corporation, tle4997i Datasheet - Page 14
tle4997i
Manufacturer Part Number
tle4997i
Description
Programmable Linear Hall Sensor For Industrial Use
Manufacturer
Infineon Technologies Corporation
Datasheet
1.TLE4997I.pdf
(34 pages)
Calculation of the Junction Temperature
The own total power dissipation P
ambient temperature.
The power multiplied with the total thermal resistance
to the final junction temperature.
and
R
T
∆ T
Example (assuming no noticeable load on Vout):
–
–
–
For overmoulded sensors the calculation with R
Magnetic Parameters
Table 5
Parameter
Sensitivity
Magnetic field range
Integral nonlinearity
Magnetic offset
Magnetic offset drift
1)
2)
3)
4)
5)
6)
7)
8)
Preliminary Data Sheet
J
thJA
V
I
∆ T
Programmable in steps of 0.024%.
@ V
This range is also used for temperature and offset pre-calibration of the IC.
Depending on Offset and Gain settings, the output may saturate already at lower fields.
Inl =
Valid in the range (5% of
In operating temperature range. More information:
For Sensitivity
Measured at ± 100 mT range.
=
=
DD
DD
Case to Ambient
T
R
= 219 [K/W] x (5 [V] x 0.01 [A] + 0 [VA] ) = 11 K
DD
=
A
= 10 mA
V
thJA
= 5 V
out
+
R
= 5V and
thJC
-
∆ T
x P
V
out,lse
+
S
Magnetic Characteristics
TOT
> 25 mV / mT. For lower sensitivities the zero field voltage drift is dominant.
T
R
with
J
thCA
= 25°C
= R
V
.
out,lse
thJA
V
DD
Symbol Limit Values
S
MFR
Inl
B
∆
) <
B
OS
= least square error fit of
x (
OS
V
OUT
V
DD
R
< (95% of
thJA
min.
± 12.5 -
± 50
-15
-500
- 5
TOT
x
I
DD
is an addition of the components
of the chip increases its temperature above the
V
+
DD
“Operating Range” on Page 11
typ.
± 100
-
-
-
14
V
)
OUT
V
out
thJC
3)
Electrical and Magnetic Parameters
.
x
I
max.
± 300
± 200
15
500
5
OUT
is more adequate.
R
thJA
)
Unit
mV/mT
mT
mV
µT
µT / °C error band
(Junction to Ambient) leads
I
DD
, I
OUT
> 0, if direction is into IC
Notes
1) 2)
programmable
= ± 0.3% of
6) 7) 8)
Junction to Case
V 1.01, 2006-09
TLE4997I
7)
V
DD
4)
5)