HMC1001 Honeywell Microelectronics & Precision Sensors, HMC1001 Datasheet
HMC1001
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HMC1001 Summary of contents
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... Magnetic Sensors HMC1001/1002/1021/1022 The Honeywell HMC100x and magnetic sensors are one and two-axis surface mount sensors designed for low field magnetic sensing. By adding supporting signal processing, cost effective magnetometers or compassing solutions are enabled. Th ese small, low cost solutions are easy to assemble for high volume OEM designs ...
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... HMC1001/1002/1021/1022 HMC1001/1002 SPECIFICATIONS Characteristics Bridge Elements Supply Resistance Operating Temperature Storage Temperature Field Range Full scale (FS) – total applied field Linearity Error Hysteresis Error Repeatability Error S/R Repeatability Output variation after alternate S/R pulses Bridge Offset Field = 0 gauss after Set pulse ...
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... HMC1001/1002/1021/1022 HMC1021/1022 SPECIFICATIONS Characteristics Bridge Elements Supply Resistance Operating Temperature Storage Temperature Field Range Full scale (FS) – total applied field Linearity Error Hysteresis Error Repeatability Error Bridge Offset Field = 0 gauss after Set pulse Sensitivity Noise Density Resolution Bandwidth Disturbing Field Use S/R pulse to restore sensitivity. ...
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... HMC1001/1002/1021/1022 KEY PERFORMANCE DATA 4 www.honeywell.com ...
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... HMC1001/1002/1021/1022 PACKAGE / PINOUT SPECIFICATIONS Arrow indicates direction of applied field that generates a positive output voltage after a SET pulse. BASIC DEVICE OPERATION The Honeywell HMC100x and HMC102x Anisotropic Magneto-Resistive (AMR) sensors are simple resistive Wheatstone bridges to measure magnetic fields and only require a supply voltage for the measurement. With power supply applied to the bridges, the sensors convert any incident magnetic field in the sensitive axis directions to a differential voltage outputs. In addition to the bridge circuits, each sensor has two on-chip magnetically coupled straps ...
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... HMC1001/1002/1021/1022 These resistive elements are aligned together to have a common sensitive axis (indicated by arrows on the pinouts) that will provide positive voltage change with magnetic fields increasing in the sensitive direction. Because the output only is in proportion to the one-dimensional axis (the principle of anisotropy) and its magnitude, additional sensor bridges placed at orthogonal directions permit accurate measurement of arbitrary field direction ...
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... HMC1001/1002/1021/1022 For simpler circuits with less critical requirements for noise and accuracy, a single polarity pulse circuit may be employed periodically (all sets or all resets). With these uni-polar pulses, several uni-polar pulses become close in performance to a single bipolar set/reset pulse circuit. NOISE CHARACTERISTICS The noise density curve for a typical AMR sensor is shown in the figure below ...
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... HMC1001/1002/1021/1022 SET/RESET STRAP OPERATION The reasons to perform a set or reset on an AMR sensor are recover from a strong external magnetic field that likely has re-magnetized the sensor optimize the magnetic domains for most sensitive performance, and 3) to flip the domains for extraction of bridge offset under changing temperature conditions. ...
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... Three of these strap resistances are chosen since many users desire 3-axis magnetic field sensing that comes from a pairing of a HMC1001 and a HMC1002. Also this combination of three series straps is also used on the HMC2003 hybrid sensor module and in the HMR2300 Smart Digital Magnetometer. ...
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... D1 1N4148 Figure 4 – Higher Voltage Set/Reset Circuit for HMC1001 & HMC1002 The three strap resistances are chosen at 1.8 ohms, or the worst-case high resistance points. Since they require a minimum of 3 amperes peak, the series combination requires at least 16.2 volts circuit Vdd of about 18 volts would about the right level to drive the strap load and allocate for losses in the C1 capacitor ESR and the MOSFET switches X1 and X2. C1’ ...
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... HMC1001/1002/1021/1022 APPLICATION CIRCUITS The following are typical application circuits using the HMC100x and HMC102x sensors. TWO AXIS COMPASS OR MAGNETOMETER Figure 5 shows the typical schematic diagram. VDD VDD 850 850 850 850 850 850 850 850 HMC1002 HMC1002 VDD VDD R9 R9 R10 ...
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... Yout feeding the heading equation of arctan (Yout/Xout) in degrees. The Xout direction of the HMC1002 should be mounted to the forward direction of the product for proper orientation tilt-compensated compass is desired, a third axis could be made from the spare LMV324N amplifier and a HMC1001 sensor. Refer to the technical papers on compassing from the website for more detail on compass implementation. ...
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... HMC1001/1002/1021/1022 R1 R1 1.1K 1. 1.1K 1.1K HMC1021 HMC1021 R12 R12 4.5 4.5 MOUNTING CONSIDERATIONS Stencil Design and Solder Paste A 4 mil stencil and 100% paste coverage is recommended for the electrical contact pads. Pick and Place Placement is machine dependant and no restrictions are recommended. ...
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... HMC1001/1002/1021/1022 PACKAGE OUTLINES 14 www.honeywell.com ...
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... HMC1001/1002/1021/1022 ORDERING INFORMATION Ordering Number Product HMC1001 One Axis Magnetic Sensor, 8-pin SIP HMC1002 Two Axis Magnetic Sensor, 20-pin SOIC HMC1002-TR HMC1021S One Axis Magnetic Sensor, 8-pin SOIC HMC1021S-TR HMC1021Z One Axis Magnetic Sensor, 8-pin SIP HMC1022 Two Axis Magnetic Sensor, 16-pin SOIC HMC1022-TR * When ordering the – ...