MLX90290 Datasheet, PDF (7/14 Pages) Melexis Microelectronic Systems – High Speed Programmed Linear Hall IC

MLX90290
High Speed Programmed Linear Hall IC
12. Detailed General Description
12.1 Characteristic Definitions:
The Sensor DC Output Voltage is defined by:
[ ] V_OUT = V_DD . (V_OQREL + S_REL . B ) , V , where:
V_OQREL
=
V_OQ
V_DD
,
V 
 _V 
is the measured relative quiescent output voltage, its nominal value is 0.5;
[ ] V_OQ = V_OUT , V is the measured quiescent output voltage at B = 0 ;
S_REL
=
S
V_DD
=
∆V_OUT
∆B
⋅
1_,
V_DD
1 
_T 
is the relative magnetic sensitivity;
S=
∆V_OUT
∆B
= S_REL . V_DD ,
V 
 _T 
is the magnetic sensitivity at given supply voltage V_DD.
Magnetic Sensitivity Temperature Coefficient TCS is defined by:
TCS = ^{SREL (TA ) − SREL (25°C)}
S_REL (25°C) . (T_A − 25°C)
.
10⁶ ,
 ppm 
 _°C  ^.
Magnetic Sensitivity Ratiometry is defined by:
ε ^RS = ^{SREL (VDD ) − SREL (VDDNOM )}
S_REL (V_DDNOM ) . (V_DD − V_DDNOM )
. 100% ,


%
V


.
Linearity for both positive and negative magnetic fields is defined by:
[ ] Lin = ^{SREL (B2 ) − SREL (B1)}
S_REL (B₁)
. 100% ,
%
,
where
B₁
=
± ^0.2
S_REL
,
B₂
= ± ^0.4
S_REL
and
S_REL (B_X )
=
V_OUT (B_X ) − V_OQ
B_X . V_DD
.
Symmetry for positive and negative magnetic fields is defined by:
[ ] Sym = ^{SREL (B2 ) − SREL (B1)}
1
2
(S_REL
(B₁
)
+
S_REL
(B₂
))
. 100% ,
%
, where
B₁
=
0.4
S_REL
,
B₂
= − ^0.4
S_REL
and
3901090290
Rev 001
Page 7 of 14
Data Sheet
October 2014