AMR2302 MULTIDIMENSION | Alldatasheet
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Technical content
High Accuracy, Low Noise Dual Axis Linear Magnetic Sensor AMR2302
Description
The AMR2302 linear sensor utilizes two push-pull Wheatstone bridges each composed of four highly sensitive AMR sensor elements. These Wheatstone bridges effectively compensate the sensor’s temperature drift to achieve outstanding temperature stability with minimal noise. AMR2302 is available in the SOP16 package. Features and Benefits
- Anisotropic magnetoresistance (AMR) technology
- Low noise density: 300 pT/√Hz@1 Hz
- Wide range supply voltages
- Low saturation field
- Excellent temperature stability
- Low hysteresis
Applications
- Weak magnetic field sensing
- Current sensor
- Position sensor
- Magnetometer SOP16 Selection Guide Part Number Linear Range Sensitivity Set/reset Coil Resistance Offset Coil Resistance Noise Density Package Packing Form AMR2302P ±3 Gs 0.9 mV/V/Gs 5 Ω 45 Ω 300 pT/√Hz SOP16 Tape & Reel Datasheet MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ Version 2.0
High Accuracy, Low Noise Dual Axis Linear Magnetic Sensor MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ AMR2302
Figure 1. Block Diagram Figure 2. Sensing Direction (SOP16) Figure 3. Pin Configuration (SOP16)
1 OffsetA- A axis offset voltage -
2 VOUTA+ A axis output +
3 VCCA A axis supply voltage
4 VOUTA- A axis output -
5 VOUTB- B axis output -
6 VCCB B axis supply voltage
7 GNDA A axis ground
8 S/RB+ B axis set/reset input+
9 S/RB- B axis set/reset input -
10 OffsetB+ B axis offset voltage +
11 OffsetB- B axis offset voltage -
12 VOUTB+ B axis output +
13 GNDB B axis ground
14 S/RA+ A axis set/reset input +
15 S/RA- A axis set/reset input -
16 OffsetA+ A axis offset +
MultiDimension Technology Co., Ltd.
- Absolute Maximum Ratings Parameters Symbol Min. Max. Unit Supply Voltage VCC - 12 V ESD Performance (HBM) VESD - 4 kV Operating Ambient Temperature TA -55 150 °C Storage Ambient Temperature TSTG -55 175 °C Soldering Temperature Ti - 260 °C Magnetic Field B - 10000 Gs 5. Electrical Specifications VCC = 5.0 V, TA = 25 °C, IS/R = 1.5 A, dual differential output unless otherwise specified Parameter Symbol Condition Min. Typ. Max. Unit Supply Voltage VCC Bridge voltage, referenced to ground 1.8 5 12 V Bridge Resistance RB I = 5 mA 600 650 1100 Ω Field Range BSAT Full scale (FS) -6 - 6 Gs Linearity Error NONL Fit in: ±1 Gs - 0.05 - %FSFit in: ±3 Gs - 0.15 - Fit in: ±6 Gs - 1.0 1.6 Hysteresis Error HYS 2 sweeps, across ±6 Gs - 0.05 - %FS Repeatability Error Brepeat 2 sweeps, across ±6 Gs - 0.08 - %FS Bridge Offset VOFFSET VOFFSET = (VOUT+) - ( VOUT -), B = 0 Gs, after set pulse -10 ±2 +10 mV/V Sensitivity SEN - 0.6 0.9 1.1 mV/V/Gs Voltage Noise Density Vnoise At 1 Hz - 25 - nV/√Hz Magnetic Noise Density Bnoise At 1 Hz - 300 - pT/√Hz Resolution RES Bandwidth = 10 Hz - 40 - μGs Bandwidth BW Magnetic signal (lower limit = DC) - 5 - MHz Offset Coil Resistance ROFFCOIL Measured from OFFSET+ to OFFSET- 35 45 55 Ω Offset Field BOFFCOIL Field applied in sensitive direction 4.0 5.0 7.0 mA/Gs Set/Reset Coil Resistance RS/R Measured between S/R+ and S/R- 3 5 7 Ω Set/Reset Current IS/R 2 μs current pulse 1 1.5 5 A Disturbing Field Bdisturb Sensitivity starts to degrade, restore by S/R pulse - 20 - Gs Sensitivity Temperature Coefficient TCS TA = -40 °C to 125 °C - -3800 - PPM/°C Bridge Offset Temperature Coefficient TCO TA = -40 °C to 125 °C, w/o set/reset - 500 - PPM/°C TA = -40 °C to 125 °C, w/ set/reset - 10 - Resistance Temperature Coefficient TCR TA = -40 °C to 125 °C - 2700 - PPM/°C Cross-Axis Effect XB Cross field = 1 Gs - ±0.5 - %FS High Accuracy, Low Noise Dual Axis Linear Magnetic Sensor MultiDimension Technology Co., Ltd. http://www.dowaytech.com/en/ AMR2302
Figure 9. Package outline of SOP16 (unit: mm) MultiDimension Technology Co., Ltd.
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