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A1365LKTTN-5-T Datasheet(PDF) 2 Page - Allegro MicroSystems |
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A1365LKTTN-5-T Datasheet(HTML) 2 Page - Allegro MicroSystems |
2 / 32 page ![]() Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator A1365 2 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com the supply voltage, VCC. The device sensitivity is adjustable within the range of 0.6 to 14 mV/G. The A1365 incorporates a highly sensitive Hall element with a BiCMOS interface integrated circuit that employs temperature- compensation circuitry to reduce the intrinsic sensitivity and offset driftoftheHallelement.TheICalsoincludesasmall-signalhigh-gain amplifier, a clamped low-impedance output stage, and a proprietary high-bandwidth dynamic offset cancellation technique. Devicespecificationsapplyacrossanextendedambienttemperature range: –40°C to 150°C. The A1365 sensor IC is provided in an extremely thin case (1 mm thick), 4-pin SIP (single inline package, suffix KT) that is lead (Pb) free, with 100% matte-tin leadframe plating.Thethinpackageallowsforbettermagneticcouplingbecause the smaller the air gap in the core is, the higher the coupling from current to magnetic field will be. • Selectable sensitivity range between 0.6 and 14 mV/G through use of coarse sensitivity program bits • Ratiometric sensitivity, quiescent voltage output, and clamps enable simple interface with application A-to-D converter (ADC) • Output voltage clamps provide short-circuit diagnostic capabilities • Open-circuit detection on ground pin (broken wire) • Undervoltage lockout for VCC below specification • Wide ambient temperature range: –40°C to 150°C FEATURES AND BENEFITS (CONTINUED) Selection Guide Part Number Package Packing1 Sensitivity Range2 (mV/G) A1365LKTTN-1-T 4-pin SIP 4000 pieces per 13-in. reel 0.6 to 1.3 A1365LKTTN-2-T 4-pin SIP 4000 pieces per 13-in. reel 1.3 to 2.9 A1365LKTTN-5-T 4-pin SIP 4000 pieces per 13-in. reel 2.9 to 6.4 A1365LKTTN-10-T 4-pin SIP 4000 pieces per 13-in. reel 6.4 to 14 1 Contact Allegro for additional packing options. 2 Allegro recommends against changing Coarse Sensitivity settings when programming devices that will be used in production. Each A1365 has been factory temperature compensated at a specific sensitivity range, and changing the coarse bits setting could cause sensitivity drift through temperature range (ΔSensTC) to exceed specified limits. DESCRIPTION (CONTINUED) Specifications 3 Absolute Maximum Ratings 3 Thermal Characteristics 3 Pinout Diagram and Terminal List Table 4 Operating Characteristics 5 Characteristic Performance Data 9 Characteristic Definitions 13 Functional Description 19 Programming Sensitivity and Quiescent Voltage Output 19 Coarse Sensitivity 19 Memory-Locking Mechanisms 19 Power-On Reset (POR) and Undervoltage Lockout (UVLO) Operation 20 Detecting Broken Ground Wire 21 Over Magnet Field Fault 22 Programming Serial Interface 24 Transaction Types 24 Writing the Access Code 24 Writing to Volatile Memory 24 Writing to EEPROM 25 Reading from EEPROM or Volatile Memory 25 Error Checking 25 Serial Interface Reference 26 Serial Interface Message Structure 27 VCC Levels During Manchester Communication 27 Shadow Mode 28 EEPROM Margining 29 EEPROM Cell Organization 30 EEPROM Error Checking and Correction (ECC) 30 Detecting ECC Error 30 Package Outline Drawing 31 Table of Contents |
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