tle4997i Infineon Technologies Corporation, tle4997i Datasheet - Page 14

• Manufacturer Part Number: tle4997i
• Description: Programmable Linear Hall Sensor For Industrial Use
• Manufacturer: Infineon Technologies Corporation

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)