HMC1043 Honeywell, HMC1043 Datasheet - Page 6

• Manufacturer Part Number: HMC1043
• Manufacturer: Honeywell

Specifications of HMC1043

• Lead Free Status / Rohs Status: Compliant

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HMC1043
A reset pulse is defined as a negative pulse current entering the S/R+ strap connection. The successful result would be
the magnetic domains aligned in a reverse easy-axis direction so that sensor bridge’s polarity is a negative slope with
positive fields on the sensitive axis result in negative voltages across the bridge output connections.
Typically a reset pulse is sent first, followed by a set pulse a few milliseconds later. By shoving the magnetic domains in
completely opposite directions, any prior magnetic disturbances will be completely erased by the duet of pulses. For
simpler circuits with less critical requirements for noise and accuracy, a single polarity pulse circuit may be employed (all
sets or all resets). With these uni-polar pulses, several pulses together become close in performance to a set/reset pulse
circuit. Figure 1 shows an H-Bridge Set/Reset circuit that will generate both set and reset pulses to the set/reset strap.
Additional information and examples on set/reset pulse circuits can be found in our application notes AN201 and AN213.
ORDERING INFORMATION
FIND OUT MORE
For more information on Honeywell’s Magnetic Sensors visit us online at www.magneticsensors.com or contact us at
800-323-8295 (763-954-2474 internationally).
The application circuits herein constitute typical usage and interface of Honeywell product. Honeywell does not warranty or assume liability of customer-
designed circuits derived from this description or depiction.
Honeywell reserves the right to make changes to improve reliability, function or design. Honeywell does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
U.S. Patents 4,441,072, 4,533,872, 4,569,742, 4,681,812, 4,847,584 6,529,114 and 7,095,226 apply to the technology described
6
Ordering Number
HMC1043
HMC1043-TR
HMC1043-demo
Product
Cut Tape
Tape and Reel with 1k units/reel
Demonstration Board
Figure 1: Example H-Bridge Set/Reset Pulse Circuit From AN213
Form #900341 Rev F
November 2010
©2010 Honeywell International Inc.
www.honeywell.com