LINEAR MAGNETIC FIELD SENSORS
HMC1001/1002 SPECIFICATIONS
Characteristics
Conditions*
Min
Typ
5
Max
12
Unit
Volts
ohm
°C
Bridge Supply
Vbridge referenced to GND
Bridge current = 10mA
Bridge Resistance
Operating Temperature (4)
Storage Temperature (4)
Field Range (4)
600
-55
-55
-2
850
1200
150
175
+2
Unbiased
°C
Full scale (FS), total applied field
gauss
%FS
Linearity Error (4)
Best fit straight line ±1 gauss
±2 gauss
0.1
1
0.5
2
Hysteresis Error (4)
3 sweeps across ±2 gauss
3 sweeps across ±2 gauss
0.05
0.05
0.10
0.10
%FS
%FS
Repeatability Error (4)
S/R Repeatability (1)
S/R Repeatability (2)
10
100
Output variation after alternate S/R pulses
2
µV
Bridge Offset
Offset = (OUT+) – (OUT-), Field=0 gauss
-60
2.5
-15
30
mV
after Set pulse, Vbridge=8V
Sensitivity
S/R Current = 3A
3.2
29
4.0
mV/V/gauss
nV/ Hz
µgauss
MHz
Noise Density (4)
Resolution (4)
Bandwidth (4)
OFFSET Strap
Noise at 1 Hz, Vbridge=5V
Bandwidth=10Hz, Vbridge=5V
Magnetic signal (lower limit = DC)
Measured from OFFSET+ to OFFSET-
27
5
2.5
0.39
51
3.5
ohm
OFFSET Strap Ω Tempco (4) TA = -40 to 125° C
%/° C
OFFSET Field (4)
Set/Reset Strap
Field applied in sensitive direction
Measured from S/R+ to S/R-
46
56
1.8
5
mA/gauss
ohm
1.5
3.2
0.37
Set/Reset Current (2) (3) (4) 2 µs current pulse, 1% duty cycle
3.0
Amp
Set/Reset Ω Tempco (4)
T A = -40 to 125° C
%/° C
Disturbing Field (4)
Sensitivity starts to degrade.
Use S/R pulse to restore sensitivity.
3
gauss
Sensitivity Tempco (4)
T A = -40 to 125° C Vbridge=8V
-0.32
-0.3
-0.28
%/° C
%/° C
Ibridge=5mA
-0.06
Bridge Offset Tempco (4)
T A = -40 to 125° C no Set/Reset
±0.03
±0.001
Vbridge=5V
with Set/Reset
Resistance Tempco (4)
Cross-Axis Effect (4)
T A = -40 to 125° C
0.25
%/° C
Cross field=1gauss no Set/Reset
(see AN-205) with Set/Reset
±3
+0.5
%FS
Max. Exposed Field (4)
Weight
No perming effect on zero reading
10000
gram
gauss
HMC1001
HMC1002
0.14
0.53
(1) VBridge = 4.3V, IS/R = 3.2A, VOUT = VSET – VRESET
(2) If VBridge = 8.0V, IS/R = 2.0A, lower S/R current leads to greater output variation.
(3) Effective current from power supply is less than 1mA.
(4) Not tested in production, guaranteed by characterization.
(*) Tested at 25° C except otherwise stated.
Units: 1 gauss (g) = 1 Oersted (in air), = 79.58 A/m, 1G = 10E-4 Tesla, 1G = 10E5 gamma.
2
HONEYWELL [ Honeywell ]
