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A1184LLHLT-T Datasheet(PDF) 3 Page - Allegro MicroSystems |
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A1184LLHLT-T Datasheet(HTML) 3 Page - Allegro MicroSystems |
3 / 14 page Standard Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switch A1184 3 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com MAGNETIC CHARACTERISTICS1 over the operating voltage and temperature range, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Units Programmable Operate Point Range BOPrange ICC = ICC(H) 300 – 600 G Initial Operate Point Range BOPinit VCC = 12 V – 262 300 G Switchpoint Step Size2 BRES VCC = 5 V, TA = 25°C 8 16 24 G Number of Programming Bits – Switchpoint setting – 5 – Bit Programming locking – 1 – Bit Temperature Drift of BOP ∆BOP – – ±20 G Hysteresis BHYS BHYS = BOP – BRP 515 30 G 1Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present). 2The range of values specified for BRES is a maximum, derived from the cumulative programming bit errors. ELECTRICAL CHARACTERISTICS over the operating voltage and temperature range, unless otherwise specified Characteristic Symbol Test Conditions Min. Typ. Max. Units Supply Voltage1 VCC Device powered on 3.5 – 24 V Supply Current2 ICC(L) B <BRP 5 – 6.9 mA ICC(H) B >BOP 12 – 17 mA Supply Zener Clamp Voltage VZ(supply) ICC = ICC(L)(max) + 3 mA; TA = 25°C 28 – 40 V Supply Zener Clamp Current3 IZ(supply) VZ(supply) = 28 V – – 9.9 mA Reverse Supply Current IRCC VRCC = –18 V – – –1.6 mA Output Slew Rate4 di/dt No bypass capacitor; capacitance of the oscilloscope performing the measurement = 20 pF – 36 – mA/μs Chopping Frequency fC – 200 – kHz Power-On Time5 ton After factory trimming; with and without bypass capacitor (CBYP = 0.01 μF) –– 25 μs Power-On State6,7 POS ton ≤ ton(max); VCC slew rate ≥ 25 mV/μs – HIGH – – 1VCC represents the generated voltage between the VCC pin and the GND pin. 2Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present). 3IZSUPPLY(max) = ICCL(max) + 3 mA. 4Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change. 5Measured with and without bypass capacitor of 0.01 μF. Adding a larger bypass capacitor causes longer Power-On Time. 6POS is defined as true only with a VCC slew rate of 25 mV/μs or greater. Operation with a VCC slew rate less than 25 mV/μs can permanently harm device performance. 7POS is undefined for t > ton or BRP < B < BOP. |
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