HMC1002 Datasheet PDF - HONEYWELL

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HMC1002
HONEYWELL

Part Number HMC1002
Description (HMC10xx) 1- and 2-Axis Magnetic Sensors
Page 15 Pages


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APPLICATIONS
Compassing
Navigation Systems
Attitude Reference
Traffic Detection
Medical Devices
Non-Contact Switch
SENSOR PRODUCTS
1- and 2-Axis Magnetic
Sensors
HMC1001 / 1002
HMC1021 / 1022
Configured as a 4-element
wheatstone bridge, these
magnetoresistive sensors
convert magnetic fields to
a differential output volt-
age, capable of sensing
magnetic fields as low as
30 µgauss. These MRs
offer a small, low cost,
high sensitivity and high
reliability solution for low
field magnetic sensing.
Not actual size
FEATURES AND BENEFITS
Wide Field Range Field range up to ±6 gauss, (earth’s field = 0.5 gauss)
Small Package
• Designed for 1- and 2-axis to work together to provide 3-axis (x, y, z) sensing
• 1-axis part in an 8-pin SIP or an 8-pin SOIC or a ceramic 8-pin DIP package
• 2-axis part in a 16-pin or 20-pin SOIC package
Solid State
These small devices reduce board assembly costs, improve reliability and ruggedness com-
pared to mechanical fluxgates.
On-Chip Coils
Patented on-chip set/reset straps to reduce effects of temperature drift, non-linearity errors and
loss of signal output due to the presence of high magnetic fields
Patented on-chip offset straps for elimination of the effects of hard iron distortion
Cost Effective The sensors were specifically designed to be affordable for high volume OEM applications.



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LINEAR MAGNETIC FIELD SENSORS
HMC1001/1002 SPECIFICATIONS
Characteristics
Conditions*
Bridge Supply
Vbridge referenced to GND
Bridge Resistance
Bridge current = 10mA
Operating Temperature (4)
Storage Temperature (4)
Unbiased
Field Range (4)
Full scale (FS), total applied field
Linearity Error (4)
Best fit straight line ±1 gauss
±2 gauss
Hysteresis Error (4)
3 sweeps across ±2 gauss
Repeatability Error (4)
3 sweeps across ±2 gauss
S/R Repeatability (1)
S/R Repeatability (2)
Output variation after alternate S/R pulses
Bridge Offset
Offset = (OUT+) (OUT-), Field=0 gauss
after Set pulse, Vbridge=8V
Sensitivity
S/R Current = 3A
Noise Density (4)
Noise at 1 Hz, Vbridge=5V
Resolution (4)
Bandwidth=10Hz, Vbridge=5V
Bandwidth (4)
Magnetic signal (lower limit = DC)
OFFSET Strap
Measured from OFFSET+ to OFFSET-
OFFSET Strap Tempco (4) TA = -40 to 125° C
OFFSET Field (4)
Field applied in sensitive direction
Set/Reset Strap
Measured from S/R+ to S/R-
Set/Reset Current (2) (3) (4) 2 µs current pulse, 1% duty cycle
Set/Reset Tempco (4)
T A = -40 to 125° C
Disturbing Field (4)
Sensitivity starts to degrade.
Use S/R pulse to restore sensitivity.
Sensitivity Tempco (4)
T A = -40 to 125° C Vbridge=8V
Ibridge=5mA
Bridge Offset Tempco (4)
T A = -40 to 125° C no Set/Reset
Vbridge=5V
with Set/Reset
Resistance Tempco (4)
T A = -40 to 125° C
Cross-Axis Effect (4)
Cross field=1gauss no Set/Reset
(see AN-205)
with Set/Reset
Max. Exposed Field (4)
No perming effect on zero reading
Weight
HMC1001
HMC1002
Min Typ
5
600 850
-55
-55
-2
0.1
1
0.05
0.05
2
-60 -15
2.5 3.2
29
27
5
2.5
0.39
46 51
1.5
3.0 3.2
0.37
3
-0.32
-0.3
-0.06
±0.03
±0.001
0.25
±3
+0.5
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.
Max
12
1200
150
175
+2
0.5
2
0.10
0.10
10
100
30
Unit
Volts
ohm
°C
°C
gauss
%FS
%FS
%FS
µV
mV
4.0 mV/V/gauss
nV/ Hz
µgauss
MHz
3.5 ohm
%/° C
56 mA/gauss
1.8 ohm
5 Amp
%/° C
gauss
-0.28
%/° C
%/° C
%/° C
%FS
10000
gram
gauss
2



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HMC1021/1022 SPECIFICATIONS
LINEAR MAGNETIC FIELD SENSORS
Characteristic
Conditions**
Min Typ Max Unit
Bridge Supply
Vbridge referenced to GND
5 25 Volts
Bridge Resistance
Bridge current = 5mA
800
1100
1300
Operating Temperature (1)
HMC1021S, 1021Z, 1022
HMC1021D*
-55 150 °C
- 55 300*
Storage Temperature (1)
Unbiased
-55 175 °C
Field Range (1)
Full scale (FS), total applied field
-6
+6 gauss
Linearity Error (1)
Hysteresis Error (1)
Repeatability Error (1)
Best fit straight line ±1 gauss
±3 gauss
±6 gauss
3 sweeps across ±3 gauss
3 sweeps across ±3 gauss
0.05
0.4 %FS
1.6
0.08 %FS
0.08 %FS
Bridge Offset
Offset = (OUT+) (OUT-), Field = 0 gauss
After Set pulse, Vbridge=5V
-10 ±2.5 11.25 mV
Sensitivity
S/R Current = 0.5A
0.8 1.0 1.25 mV/V/gauss
Noise Density (1)
Resolution (1)
Noise at 1Hz, Vbridge=5V
Bandwidth=10Hz, Vbridge=5V
48 nV/Hz
85 µgauss
Bandwidth (1)
Magnetic signal (lower limit = DC)
5 MHz
OFFSET Strap
Measured from OFFSET+ to OFFSET-
38 50 60
OFFSET Strap Tempco (1) TA = -40 to 125° C
0.39 %/° C
OFFSET Field (1)
Field applied in sensitive direction
4.0 4.6 6.0 mA/gauss
Set/Reset Strap
Set/Reset Current
Measured from S/R+ to S/R-
2µs current pulse, 1% duty cycle
5.5 7.7
9
0.5 0.5 4.0 Amp
Set/Reset Tempco (1)
TA = -40 to 125° C
0.37 %/° C
Disturbing Field (1)
Sensitivity starts to degrade. Use S/R
pulse to restore sensitivity.
20
gauss
Sensitivity Tempco (1)
TA = -40 to 125° C Vbridge=5V
Ibridge=5mA
-0.32
-0.3
-0.06
-0.28
%/° C
Bridge Offset Tempco (1)
TA = -40 to 125° C no Set/Reset
Vbridge=5V
with Set/Reset
±0.05
±0.001
%/° C
Resistance Tempco (1)
Vbridge=5V, TA = 40 to 125° C
0.25 %/° C
Cross-Axis Effect (1)
Cross field=1 gauss
(see AN-205) Happlied=±1 gauss
+0.3
%FS
Max. Exposed Field (1)
No perming effect on zero reading
10000
gauss
Set/Reset (1)
S/R current 0.5 Amps
30 µV
*Please reference data sheet, HTMC1021D for specifications.
(1) Not tested in production, guaranteed by characterization.
Units: 1 gauss (G) = 1 Oersted (in air), 1G = 79.58 A/m,
1G = 10E-4 Tesla, 1G = 10E5 gamma
**Tested at 25° C except otherwise stated.
3



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LINEAR MAGNETIC FIELD SENSORS
KEY PERFORMANCE DATA
Sensor output vs magnetic field
after being set or reset
15
1021/1022
10
Vb=5V
5
0
-5
-10
2 sweeps
-15
Reset
Set
-20
-2
-1 0
Field (Oe)
1
2
Sensor noise vs frequency
1000
1021/1022
Vb=5V
100
Sensor output vs magnetic field
Output is repeatable in field range ±20 Oe
60
1021/1022
40
Vb=5V
20
0
-20
2 sweeps
-40
-60
-20
1.3
1.2
1.1
-15 -10 -5 0 5
Field (Oe)
10
Sensitivity vs temperature
Constant voltage power supply
15
1021/1022
Vb=5V
20
1
0.9
10
0.8
0.7
1
0.1 1
10 100
Frequency (Hz)
1400
Bridge resistance vs temperature
1300
All types
Vb=5V
1200
1100
1000
1000
0.6
-50
-25
0 25 50 75 100 125
Temperature (C)
Effects of set/reset pulse variation
2µ sec pulse duration, S/R voltage >4V is recommended
1
Vb=5V
1021/1022
0.8
Null Voltage (mV) (Set)
0.6 Null Voltage (mV) (Reset)
Sensitivity (mV/V/Oe) (Set)
0.4
nnoosseet/tr/erseesteitnint
thirsergeiognion
Sensitivity (mV/V/Oe) (Reset)
0.2
900
-50 -25 0 25 50 75 100 125
Temperature (C)
4
0
0
123
Set/Reset Voltage (V)
4
5



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