HMC1052 Datasheet PDF - Honeywell
| Part Number | HMC1052 | |
| Description | (HMC1051 / HMC1052) 1 AND 2-AXIS MAGNETIC SENSORS | |
| Manufacturers | Honeywell | |
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HMC1051 / HMC1052
SENSOR PRODUCTS
Features
1 AND 2-AXIS MAGNETIC SENSORS
· Small 8-Pin SIP or 10-Pin MSOP Packages
· Two AMR Bridges in One Package
· Wide Field Range of +/- 6 Gauss
· 1.0 mV/V/gauss Sensitivity
· High Accuracy Compassing (Error <0.01°)
· Low Power Operation Down to 1.8V
· Patented On-chip Set/Reset Straps
Product Description
The Honeywell HMC1051Z and HMC1052 are high
performance magnetoresistive sensor designs on a
single chip. The advantages of these patented chips
include perfectly orthogonal two-axis sensing
(HMC1052), ultra small size and low power capability in
miniature surface mount packages.
Each of the magnetoresistive sensors are configured
as a 4-element wheatstone bridge to convert magnetic
fields to differential output voltages. Capable of sensing
fields below 0.1 milligauss, these sensors offer a
compact, low cost, high sensitivity and highly reliable
solution for low field magnetic sensing.
APPLICATIONS
· Compassing
· Navigation Systems
· Attitude Reference
· Traffic Detection
· Medical Devices
· Position Sensing
Web Sites:
www.magneticsensors.com
www.ssec.honeywell.com
Email: [email protected]
2001 HMC1051/1052 Published Jul 2001 Page 1
DataSheet4 U .com
HMC1052 Circuit Diagram
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
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HMC1051 / HMC1052
SENSOR PRODUCTS
Set/Reset Circuit Notes
The set/reset circuit using the IRF7507 dual complementary MOSFETs is shown in Figure 2 with more detail in its H-
bridge driven configuration. This configuration is used primarily in battery operated applications were the 0.5 ampere
nominal set/reset pulsed currents are best obtained under low voltage conditions. For operation at normal 3.3 or 5
volt logic levels, a single complementary MOSFET pair can be used in a single ended circuit shown in Figure 3.
Other complementary MOSFET pairs can be used with the caution that the chosen devices should have less than
0.5 ohms ON resistance and be able to handle the needed supply voltages and set/reset currents. Note that even a
1Hz rate of set/reset function draws an average current of less than 2 microamperes.
Figure 2
1mf +
-
Vsr
200W
S IRF7509(P)
Vcc
Rset/reset
4W
.1mf
D
D
Vsr
S IRF7509(P)
S
G
D
D
G
G
G
IRF7509(N)
set/reset
_set/reset
S IRF7509(N)
Figure 3
.1mf
Rset/reset
4W
1mf +
-
Vsr
200W
S IRF7509(P)
Vcc
G
D
D
G
set/reset
S
IRF7509(N)
Magnetic Field Detection
For simple magnetic field sensing applications such Magnetic Anomaly Detectors (MADs) and Magnetometers, a
similar circuit to the compass application can be implemented. In the example circuit in Figure 4, a HMC1051Z
sensor bridge is used with a low voltage capable dual op-amp to detect sufficient intensity of a magnetic field. Uses
of the circuit include ferrous object detection such as vehicle detection, a “sniffer” for moderate currents in nearby
conductors, and magnetic proximity switching. By using two circuits with a HMC1052, a more omni-directional
sensing pattern can implemented. There is nothing special in choosing the resistors for the differential op-amp gain
stages other than having like values (e.g. the two 5kW and the 500kW resistors) matched at 1% tolerance or better to
reject common-mode interference signals (EMI, RFI). The ratio of the 500kW/5kW resistors sets the stage gain and
can be optimized for a specific purpose. The choice of the 5kW value sets impedance loading seen by the sensor
bridge network and should be about 4 kilo-ohms or higher for best voltage transfer or matching.
Web Sites:
www.magneticsensors.com
www.ssec.honeywell.com
Email: [email protected]
2001 HMC1051/1052 Published Jul 2001 Page 5
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
DataSheet4 U .com
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for HMC1052 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ HMC1052.PDF Datasheet ] | |
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