A1360 Allegro Micro Systems, Inc., A1360 Datasheet
A1360
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A1360 Summary of contents
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... V is adjustable within three guaranteed ranges: 0.7 to 1.4 mV/G (A1360), 1.4 to 4.5 mV/G (A1361), and 4 mV/G (A1362). Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensation circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Description (continued) The features of these linear Hall effect sensors make them ideal for meeting high accuracy requirements in automotive and industrial applications. Device specifications are guaranteed over an extended ambient temperature range: –40 °C to 150 °C. The A136x sensors ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output OPERATING CHARACTERISTICS valid over full operating temperature range, T OPERATING CHARACTERISTICS valid over full operating temperature range, T Characteristic Symbol Electrical Characteristics Supply Voltage V CC Supply Current I CC Power-On Time Supply Zener Clamp Voltage ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output OPERATING CHARACTERISTICS (continued) valid over full operating temperature range, T Characteristic Symbol 7 Pre-Programming Target Pre-Programming Quiescent V OUT(Q)PRE Voltage Output Pre-Programming Sensitivity Sens PRE Quiescent Voltage Output Programming V OUT(Q)UNIinit Initial Quiescent Voltage Output ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output OPERATING CHARACTERISTICS (continued) valid over full operating temperature range, T Characteristic Symbol Drift Characteristics Quiescent Voltage Output Drift ∆V OUT(Q) Through Temperature Range 1 Sensitivity Drift Due to Package ∆Sens Hysteresis 1 1 See Characteristic Definitions section. ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output may require derating at maximum conditions Thermal Characteristics Characteristic Package Thermal Resistance *Additional thermal information available on Allegro website. Low-Noise Programmable Linear Hall Effect Sensors with Symbol 1-layer PCB with copper limited to solder pads R θ ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output 100 10 1 0.1 0.01 0.1 1 Capacitance External Capacitor on FILTER Pin, C Low-Noise Programmable Linear Hall Effect Sensors with Characteristic Data Bandwidth Range 10 100 Step Response Sens = 2.2 mV/G Output (mV) 350 G Excitation Signal BW(max) Guaranteed Range BW(min) ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output 180 160 140 120 100 250 200 150 100 50 0 Low-Noise Programmable Linear Hall Effect Sensors with Noise versus Filter Capacitance Sens = 6.6 mV/G 0 100 ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output When the supply is ramped to its operating volt- Power-On Time age, the device requires a finite time to power its internal com- ponents before responding to an input magnetic field. Power-On Time defined as: the time it takes for the output voltage PO to settle within ± ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output A large magnetic input step may cause the clamp Delay to Clamp to overshoot its steady state value. The Delay to Clamp, t defined as: the time it takes for the output voltage to settle within ±1% of its steady state value, after initially passing through its steady state voltage, as shown in the following chart ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output The magnetic sensitivity, Sens, Guaranteed Sensitivity Range can be programmed around its nominal value, 0 mV/G depending on device type, within the sensitivity range limits: Sens(min) and Sens(max). Refer to the Guaranteed Quiescent Voltage Output Range section for a conceptual explanation of how value distributions and ranges are related ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output The magnetic sensitivity of an Symmetry Sensitivity Error A136x device is constant for any two applied magnetic fields of equal magnitude and opposite polarities. Symmetry error, Sym (%), is measured and defined as: ERR ⎛ ⎞ ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output C BYPASS 0.1 μF When using Hall-effect technology, a limiting factor for switchpoint accuracy is the small signal voltage developed across the Hall element. This voltage is disproportionally small relative to the offset that can be produced at the output of the Hall sensor ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Overview Programming is accomplished by sending a series of input volt- age pulses serially through the VOUT pin of the device. A unique combination of different voltage level pulses controls the internal programming logic of the device to select a desired programmable parameter and change its value ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Zone The 136x programming logic is designed to accept up to two different key-code combinations sequentially without cycling the supply. The first key-code combination is interpreted as addressing a register in the first zone, and the second key-code combination is interpreted as addressing a register in the second zone ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Parameter Selection Each of the four programmable parameters can be accessed through its corresponding parameter register. These registers are located in two distinct zones in the A136x devices: Zone 1, Register 1: • Fine sensitivity, Sens Zone 2, Register 1: • ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Bit Field Selection (Decimal Equivalent) Address Code Format Code in Binary Fuse Blowing Bit 2 Target Bits Fuse Blowing Code 4 Address Code Format (Decimal Equivalents) Figure 3. Example of code 5 broken into its binary components, equaling code 4 and code 1 ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Hold Mode Hold mode allows multiple programmable parameters to be tested simultaneously without permanently setting any values. With the 136x programming logic, only two parameters located in different zones can be addressed together. For example, only ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Figure 6. Pulses to enter Try mode, zone 2. Example shown is for addressing the Fine Quiescent Voltage Output register. After addressing desired code, cycle the supply to reset the bit field or apply a blow pulse to make the parameter value permanent. ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Initial State After system power-up, the programming logic is reset to a known state. This is referred to as the Initial state. All the bit field locations that have intact fuses are set to logic 0. While in the Ini- tial state, any V pulses on the VOUT pin are ignored ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Programming Logic Table Programmable Parameter Register Selection Binary Format Zone (MSB → LSB) (Key) Sens 1 (1) V OUT(Q) (1) 2 Coarse V OUT(Q) (2) LOCK (2) Low-Noise Programmable Linear Hall Effect Sensors with Bit Field Address ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Constructing a Current Sensor Using the A136x To construct a current sensor using the A136x, first consider a current carrying wire that we want to observe. As dictated by Ampere’s Law, a magnetic field is produced around the wire that is proportional to the amount of current flowing through the wire ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Flux Density per Ampere vs. Gap for a Feedthrough Sensor 0.5 1 1.5 2 Gap (mm) Figure 8. The flux density per ampere measured by the A136x Hall sen- sor is related to the core gap, as shown. This figure assumes that the current sensing application is constructed using the example setup ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Improving Sensing System Accuracy Using the FILTER Pin In low-frequency sensing applications often advantageous to add a simple RC filter to the output of the sensor. Such a low- pass filter improves the signal-to-noise ratio, and therefore the resolution, of the sensor output signal ...
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... A1360, A1361, and A1362 Adjustable Bandwidth (50 kHz Maximum) and Analog Output Copyright ©2008, Allegro MicroSystems, Inc. The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. ...