Hall Effekt Sensoren (Hall-Effect Sensor IC's)

Typisches  Hall-IC  -  Blockdiagramm Sal 67743

Hall-Effect Sensor Selection Guides

The bipolar Hall-effect switches generally switch on with a south pole of sufficient strength and switch off with a north pole of sufficient strength however the output state is not defined if the magnetic field is removed. Some bipolar Hall-effect switches will change the output state and some sensors will not. These Hall-effect switches are designed for magnetic actuation using a north-south alternating field, multi-pole ring magnet.

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Temperature Ranges Packages Comments A1202 <75 >-75 >30 E, L LH, UA Replaces UGx3133 A1203 <95 >-95 >30 E, L LH, UA Replaces UGx3132 A1205 -40 to 50 -50 to 40 5 to 55 E, L LH, UA - Replaces A3134 - Optimized for pulsed Vcc A3230 -10 to 25 -25 to 10 5 to 25 E, L LH, UA Chopper-stabilized (bipolar switch)

Part Number Peak Load Current (mA) Number of Bridges Output Motor Type Package Operate Point Key Features A1442 ±200 Full bridge MOS BLDC EW ±75 Reverse battery and short circuit protection, active braking function, thermal shutdown protection, soft-switching A1444 ±500 Full bridge MOS BLDC EW ±75 Reverse battery and short circuit protection, externally controlled speed regulation, active braking function, thermal shutdown protection A1445 ±500 Full bridge MOS BLDC EW ±75 Reverse battery and short circuit protection, externally controlled speed regulation, active braking function, thermal shutdown protection A1448 ±400 Full bridge MOS BLDC EW ±75 Reverse battery and short circuit protection, direct input PWM speed control, active braking function, thermal shutdown protection, soft-switching

The current sensor IC families are innovative, monolithic, isolated Hall-effect based devices that provide a fully-integrated solution in industry-leading small-sized packages.

Key features:
• Low insertion loss; power dissipation much less than shunt solution
• Able to monitor both AC and DC currents
• Smaller form factor than shunt and current transformer solutions
• 5 V, single supply operation
• Voltage isolation rating certified by TUV America
• RoHS compliant

If you need to measure more than 200 A, please see the application note, Using Allegro Current Sensors in Current Divider Configurations for Extended Measurement Range.

Type Part Number Measurement Range (A) Isolation Voltage (VRMS) Bandwidth (kHz) Temperature Ranges Packages Features Bidirectional ACS712 ±5 to 30 2100 >50 E SOIC-8 Low noise, fast response, shielded current sensor Unidirectional ACS713 20 to 30 2100 >50 E SOIC-8 Unidirectional version of ACS712 Bidirectional ACS714 ±5 to 30 2100 80 E, L SOIC-8 Low noise, high speed current sensor with integrated shield, automotive grade Unidirectional ACS715 20 to 30 2100 80 E, L SOIC-8 Unidirectional version of ACS714, automotive grade Bidirectional ACS754 ±50 to 200 3000 35 S, K, L CB Accurate current sensor for monitoring currents up to 50, 100, 150 and 200 A Unidirectional ACS755 50 to 130 3000 35 S, K, L CB Unidirectional version of ACS754 Bidirectional ACS756 ±50 to 100 3000 120 S, K CA Most accurate, highest bandwidth current sensor for monitoring currents from 50 to 100 A Bidirectional ACS758 ±50 to 200 3000 120 E, S, K, L CB Thermally enhanced, highest bandwidth current sensor for monitoring currents from 50 to 200 A                 Type Part Number Measurement Range (A) Voltage (V) Bandwidth (kHz) Temperature Ranges Packages Comments Hot Swap Controller ACS761 55 12 to 20 50 E QSOP24 Hall Effect Hot-Swap Protection IC 240VA – True Power Fault Monitor Over-Current – Threshold set by user Short Circuit - 2 µs response FET Failure detection and alert

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Temperature Ranges Packages Output Pins A3423 55 max -55 min Typ 30 E, L K, L Speed and Direction A3425 30 max -30 min Typ 14 E, L K, L Dual Channel Quadrature

The gear-tooth sensors are smart sensors that learn about their targets to optimize the magnetic circuit detection. Each module combines in a compact high-temperature plastic package: a samarium-cobalt magnet, a pole piece, and a differential Hall-effect IC that has learning capability. These sensors can be easily used in conjunction with a wide variety of gear or target shapes and sizes.

Part Number Supply Voltage (V) Output Type Power-On State Specified Air Gap Range (>20 Hz) Key Spec (see datasheet for details) Minimum Speed Applications Temperature Ranges Packages ATS616 3.5 to 24 3-wire High (off) 0.4 to 2.5 mm Timing accuracy 10 Hz Camshaft, Crankshaft L SG ATS617 4.5 to 24 3-wire High (off) 0.4 to 2.5 mm Timing accuracy 10 Hz Camshaft, Crankshaft L SG ATS625 4 to 24 3-wire High (off) 0.5 to 2.5 mm Repeatability Zero speed Crankshaft L SG ATS635 4.2 to 24 3-wire Low (off) 2.5 mm max User programmable switch point Zero speed Coarse L SE ATS636 4.2 to 24 3-wire High (off) 2.5 mm max User programmable switch point Zero speed Coarse L SE ATS643 4 to 24 2-wire High (current) 0.5 to 2.5 mm Duty cycle Zero speed Transmission L SH ATS665 3.3 to 24 3-wire High (off) 0.5 to 2.5 mm Duty cycle Zero speed Transmission L SG ATS667 4 to 24 3-wire High (off) 0.5 to 2.5 mm Duty cycle Zero speed Transmission L SG ATS675 3.3 to 26.5 3-wire TPO 0.5 to 2.5 mm Timing accuracy Zero speed Camshaft L SE ATS682 4 to 24 2-wire TPO 0.5 to 2.75 mm   Zero speed   L SH

The Hall-effect digital latches will always switch on with a south magnetic of sufficient strength and switch off with a north magnetic field of sufficient strength. The output will not change if the magnetic field is removed. To change the output state, the opposite magnetic field polarity must be applied. Allegro offers a variety of latching Hall-effect switches each with a different operate threshold (Bop) with respect to the south pole of a magnet and an release threshold (Brp) with the opposite value in respect to the north pole of a magnet.

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Temperature Ranges Packages Output Comments A1210 25 to 150 -150 to -25 >50 (typ 180) E, L LH, UA Open Collector Replaces UGN3177 A1211 15 to 180 -180 to -15 >80 (typ 180) E, L LH, UA Open Collector Replaces UGN3175 A1212 50 to 175 -175 to -50 100 to 350 L LH, UA Open Collector Replaces A3187 A1213 80 to 200 -200 to -80 160 to 400 E, L LH, UA Open Collector Replaces A3188, A3189 A1214 140 to 300 -300 to -140 280 to 600 E, L LH, UA Open Collector Replaces A3185 A1220 5 to 40 -40 to -5 Typ 45 E, L LH, UA Open Collector Replaces A3280, Supply voltage 3 to 24 V, Chopper-Stabilized A1221 15 to 90 -90 to -15 Typ 100 E, L LH, UA Open Collector Replaces A3281, Supply voltage 3 to 24 V, Chopper-Stabilized A1242 5 to 80 -80 to -5 40 to 110 E, L LH, UA Current Source Two-wire operation A3280 5 to 40 -40 to -5 Typ 45 E, L LH, LT, UA Open Collector Chopper-stabilized A3281 15 to 90 -90 to -15 Typ 100 E, L LH, LT, UA Open Collector Chopper-stabilized A3282 70 to 150 -150 to -70 >140 (typ 220) E, L LH, UA Open Collector Chopper-stabilized A3283 100 to 180 -180 to -100 Typ 300 E, L LH, LT, UA Open Collector Chopper-stabilized A3290 5 to 50 -50 to -5 10 to 100 K LH, UA Open Collector Chopper-stabilized A3291 10 to 100 -100 to -10 20 to 100 K LH, UA Open Collector Chopper-stabilized

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Minimum Speed (Hz) Temperature Ranges Packages A1421 0 to 27.5 -12.5 to 7.5 Typ 15 20 L K A1422 5 to 35 -35 to -5 Typ 30 20 L K A1423 10 to 100 -100 to -10 Typ 130 20 L K A1425 -11 to 11 -11 to 11 Typ 8.5 20 L K

The linear Hall-effect sensor ICs' voltage output accurately tracks the changes in magnetic flux density. In the quiescent state (no magnetic field), the output is ideally equal to one-half of the supply voltage over the operating voltage and temperature ranges. An increasing south-pole magnetic field will increase the voltage from its quiescent voltage. Conversely, an increasing north-pole field will decrease the voltage from its quiescent voltage. These parts are designed for the measurement of angle, proximity, motion, and the magnetic flux from current. They are magnetically driven mirrors of mechanical events. Allegro offers devices with outputs at various sensitivities.

Part Number Supply Voltage (V) Quiescent Output (V) Typical Sensitivity (mV/G) Output Bandwidth (kHz) Temperature Ranges Packages Key Features A1301 4.5 to 6.0 Typ 50% Vcc 2.5 20 E, K LH, LT, UA Continuous-time A1302 4.5 to 6.0 Typ 50% Vcc 1.3 20 E, K LH, LT, UA Continuous-time A1321 4.5 to 5.5 Typ 50% Vcc 5.0 30 E, L LH, UA Chopper-stabilized A1322 4.5 to 5.5 Typ 50% Vcc 3.13 30 E, L LH, UA Chopper-stabilized A1323 4.5 to 5.5 Typ 50% Vcc 2.5 30 E, L LH, UA Chopper-stabilized A1354 4.5 to 16.0 40 to 60% (QDC Range) 10 to 20%/G (Sense Range) 0.20 L KT 2-Wire, PWM output A1373 4.5 to 5.5 0.7 to 4.5 (Programmable) 1.75 to 11.25 (Programmable) 2.5 E, L KB Chopper-stabilized A1374 4.5 to 5.5 0.7 to 4.5 (Programmable) 1.75 to 11.25 (Programmable) 20 E, L KB Chopper-stabilized A1381 4.5 to 5.5 2.3 to 2.6 6 to 9 (Programmable) 12 E, L LH, UA Chopper-stabilized A1382 4.5 to 5.5 2.3 to 2.6 (Programmable) 4 to 6.25 (Programmable) 17 E, L LH, UA Chopper-stabilized A1383 4.5 to 5.5 2.3 to 2.6 (Programmable) 2.75 to 4.25 (Programmable) 21 E, L LH, UA Chopper-stabilized A1384 4.5 to 5.5 2.3 to 2.6 (Programmable) 2 to 3 (Programmable) 27 E, L LH, UA Chopper-stabilized A1386 4.5 to 5.5 2.3 to 2.6 (Programmable) 2.1 20 E, L LH, UA Chopper-stabilized A1391 2.5 to 3.5 Typ 50% Vref 1.25 10 S EH Chopper-stabilized A1392 2.5 to 3.5 Typ 50% Vref 2.5 10 S EH Chopper-stabilized A1393 2.5 to 3.5 Typ 50% Vref 5.0 10 S EH Chopper-stabilized, µPower A1395 2.5 to 3.5 Typ 50% Vref 10 10 S EH Chopper-stabilized, µPower

Part Number Supply Voltage (V) Quiescent Output (V) Typical Sensitivity (mV/G) Output Bandwidth (kHz) Temperature Ranges Packages Key Features A1351 4.5 to 5.5 50% (QDC) 0.055 to 0.095% DC/G 0.125 K KT PWM output, Factory programmed TC to 0%/°C A1360 4.5 to 5.5 Typ 10% or 50% Vcc 0.7 to 1.4 Programmable 50 L KT Factory programmed TC to 0%/°C A1361 4.5 to 5.5 Typ 10% or 50% Vcc 1.4 to 4.5 Programmable 50 L KT Factory programmed TC to 0%/°C A1362 4.5 to 5.5 Typ 10% or 50% Vcc 4.5 to 16 Programmable 50 L KT Factory programmed TC to 0%/°C

Omnipolar Hall-Effect Digital Switches

Unlike other Hall-effect switches, these devices switch on with the presence of either a north or south magnetic field that has sufficient strength; in the absence of a magnetic field the output is off.

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Supply Current (µA) Operating Voltage (V) Temperature Ranges Packages Features A3211 ±55 ±10 Typ 7.7 6 (typ) 2.5 to 3.5 E EL, EH, LH Inverted output; operates at approximately 0.1% duty cycle A3212 ±55 ±10 Typ 7.7 6 (typ) 2.5 to 3.5 E EL, LH, LH Operates at approximately 0.1% duty cycle A3213 ±70 ±10 Typ 7.7 825 (max) 2.4 to 5.5 E, L LH, UA   A3214 ±70 ±10 Typ 7.7 14 (max) 2.4 to 5.5 E, L LH, UA Operates at approximately 0.1% duty cycle A3245 ±55 ±10 Typ 15 1500 (typ) 3.6 to 24 E, L LH, UA Integrated voltage regulator A1171 ±55 ±6 Typ 6 4.0 (typ) (VDD = 1.8 V) 1.65 to 3.5 E EW Complementary outputs, also unipolar operating mode A1172 ±55 ±6 Typ 6 4.0 (typ) (VDD = 1.8 V) 1.65 to 3.5 E CG Wafer Level Chip Scale Package (WLCSP)

The unipolar Hall-effect switch is characterized by the magnetic operate threshold (Bop). If the Hall cell is exposed to a magnetic flux density greater than the operate threshold, the output transistor is switched on; by dropping below the threshold (Brp), the transistor is switched off. The hysteresis (Bhys) is the difference between the two thresholds (Bop-Brp). This built in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. The digital output from a unipolar Hall-effect can be adapted to various logic systems. These devices are ideal for use with simple bar or rod magnets. Allegro offers a variety of unipolar Hall-effect switches that each have a different operate threshold and hysteresis with respect to the south pole of a magnet.

Part Number Operate Point (G) Release Point (G) Hysteresis (G) Temperature Ranges Packages Output Comments A1101 30 to 175 10 to 140 20 to 80 E, L LH, UA Open Collector Replaces A3141 A1102 115 to 245 60 to 190 30 to 80 E, L LH, UA Open Collector Replaces A3142 A1103 205 to 355 150 to 300 30 to 80 E, L LH, UA Open Collector Replaces A3143 A1104 35 to 450 25 to 430 >20 E, L LH, UA Open Collector Replaces A3144 A1106 260 to 430 160 to 330 70 to 140 E, L LT, UA Open Collector Replaces A3121, A3122, A3123 A1120 <50 (typ 35) >5 (typ 25) Typ 10 E, L LH, UA Open Collector Replaces A3240, Supply Voltage 3 to 24 V, Chopper-Stabilized A1142 <115 >45 5 to 30 E, L LH, UA Current Source Replaces A3361, Output high without magnetic field A1143 <115 >45 5 to 30 E, L LH, UA Current Source Replaces A3163 and A3362, Output low without magnetic field, inverted output A1145 20 to 60 10 to 55 5 to 30 E, L LH, UA Current Source   A1146 20 to 60 10 to 55 5 to 30 E, L LH, UA Current Source   A1147 20 to 80 10 to 60 5 to 30 E, L LH, UA Current Source   A1148 20 to 80 10 to 60 5 to 30 E, L LH, UA Current Source   A1180 60 to 200   5 to 30 E, L LH, UA Current Source   A1181 60 to 200   5 to 30 E, L LH, UA Current Source   A1182 60 to 200   5 to 30 E, L LH, UA Current Source   A1183 60 to 200   5 to 30 E, L LH, UA Current Source   A1184 300 to 600   5 to 30 E, L LH, UA Current Source   A1185 10 to 60   5 to 30 E, L LH, UA Current Source   A1186 10 to 60   5 to 30 E, L LH, UA Current Source   A3241 <120 >40 >10 Typ 25 E, L LH, UA Open Collector Chopper-stabilized A3242 <205 >105 >10 Typ 25 E, L LH, UA Open Collector Chopper-stabilized A3250 50 to 350 Typ 13 G below Bop 5< 13-18 Typ <35 L UA Open Collector Programmable switchpoints A3251 50 to 350 Typ 13 G below Bop 5< 13-18 Typ <35 L UA Open Collector Programmable switchpoints A3340 50 max 5 G min 6 G Typ E, L LH, UA Open Collector Chopper-stabilized