Data Sheet 27631.50 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH Suffix Code 'LH' Pinning (SOT23W) 3 X NC NO (INTERNAL) CONNECTION Dwg. PH-003-5 2 GROUND SUPPLY 1 Pinning is shown viewed from branded side. ADVANCE INFORMATION The A3260-- Hall-effect bipolar switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended temperature ranges to +150°C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a constant-current open-collector output. A south pole of sufficient strength will turn the output OFF. An on-board regulator permits operation with supply voltages of 3.5 to 24 volts. Noise radiation is limited by control of the output current slew rate. The first character of the part number suffix determines the device operating temperature range; suffix ‘E–’ is -40°C to +85°C and ‘L–’ is -40°C to +150°C. Three package styles provide a magnetically optimized package for most applications. Suffix ‘–LH’ is a miniature SOT23W low-profile surface-mount package, ‘–LT’ is a miniature SOT89/TO-243AA transistor package for surface-mount applications; while suffix ‘–UA’ is a three-lead ultra-mini-SIP for through-hole mounting. (subject to change without notice) December 6, 2002 FEATURES ABSOLUTE MAXIMUM RATINGS at TA=+25°C Supply Voltage, VCC ........................... 27 V Reverse Battery Voltage, VRCC .......... -16 V Magnetic Flux Density, B ........... Unlimited Package Power Dissipation, PD . See Graph Junction Temperature, TJ ............... +170°C Operating Temperature Range, TA Suffix ‘E–’ .................. -40°C to +85°C Suffix ‘L–’ ................ -40°C to +150°C Storage Temperature Range, TS .............................. -65°C to +170°C ■ ■ ■ ■ ■ ■ ■ ■ Internal Current Regulator for 2-Wire Operation Output Slew Rate Controlled Resistant to Physical Stress Superior Temperature Stability Operation From Unregulated Supply Reverse Battery Protection Solid-State Reliability Small Size Always order by complete part number: the prefix 'A' + the basic four-digit part number + a suffix to indicate operating temperature range + a suffix to indicate package style, e.g., A3260ELH . 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH FUNCTIONAL BLOCK DIAGRAM TO ALL SUBCIRCUITS SAMPLE & HOLD X LOW-PASS FILTER REG. DYNAMIC OFFSET CANCELLATION SUPPLY GROUND Dwg. FH-020-4 Suffix Code 'UA' Pinning Suffix Code 'LT' Pinning (ultra-mini SIP) (SOT89/TO-243AA) X X GROUND GROUND Dwg. PH-003-7A 1 2 Dwg. PH-003-6 Pinning is shown viewed from branded side. 2 115 Northeast Cutoff, Box 15036 W Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2002 Allegro MicroSystems, Inc. 3 NO (INTERNAL) CONNECTION 3 GROUND 2 SUPPLY 1 SUPPLY NC 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH ELECTRICAL CHARACTERISTICS over operating temperature range. Limits Characteristic Symbol Supply Voltage VCC Output Current Chopping Frequency Output Slew Rate Test Conditions Min. Typ. Max. Units Operating 3.5 12 24 V IGND(L) B > BOP -4.0 -6.5 -8.0 mA IGND(H) B < BRP -11 -14.5 -18 mA – 340 – kHz fC di/dt CL = 20 pF 0.5 — 2.0 mA/µs Output Settling Time tsd CL = 20 pF — — 20 µs Reverse Battery Current ICC VRCC = -16 V – – -15 mA NOTES: 1. BOP = operate point (output turns OFF); BRP = release point (output turns ON). 2. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only. MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges. Limits Characteristic Symbol Operate Point Test Conditions Min. Typ. Max. Units BOP – 10 30 G Release Point BRP -30 -10 – G Hysteresis Bhys – 20 – G BOP - BRP NOTES: 1. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only. 2. 1 gauss (G) is exactly equal to 0.1 millitesla (mT). www.allegromicro.com 3 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH SENSOR LOCATIONS Package Designator “LH” ACTIVE AREA DEPTH 0.011" 0.28 mm NOM 0.059" 1.49 mm 3 0.038" 0.96 mm A 1 2 Dwg. MH-025 Package Designator “LT” ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS 800 (±0.005” [0.13 mm] die placement) 700 Suffix "–UA" RθJA = 165°C/W 600 500 Suffix "–LT" RθJA = 180°C/W Suffix "–LH" RθJA = 228°C/W 400 300 200 Suffix "E–" 100 Suffix "L–" 0 20 40 60 100 80 120 AMBIENT TEMPERATURE in °C 140 160 180 Dwg. GH-046-2D ACTIVE AREA DEPTH 0.0305" 0.775 mm NOM 0.088" 2.24 mm 0.045" 1.14 mm Allegro A 1 2 3 Dwg. MH-008-8A Package Designators “UA” and "UA-TL" ACTIVE AREA DEPTH 0.0195" 0.50 mm NOM 0.080" 2.04 mm 0.056" 1.44 mm A BRANDED SURFACE 1 2 3 Dwg. MH-011-9B Although sensor location is accurate to three sigma for a particular design, product improvements may result in small changes to sensor location. 4 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH CRITERIA FOR DEVICE QUALIFICATION All Allegro sensors are subjected to stringent qualification requirements prior to being released to production. To become qualified, except for the destructive ESD tests, no failures are permitted. Qualification Test Test Method and Test Conditions Test Length Samples Biased Humidity (HAST) TA = 130°C, RH = 85% 50 hrs 77 VCC = VOUT = 5 V High-Temperature Operating Life (HTOL) JESD22-A108, TA = 150°C, TJ ≤ 165°C 408 hrs 77 VCC = 24 V, VOUT = 20 V Accelerated HTOL TA = 175°C, TJ = 190°C 504 hrs 77 VCC = 24 V, VOUT = 20 V Autoclave, Unbiased JESD22-A102, Condition C, TA = 121°C, 15 psig 96 hrs 77 High-Temperature (Bake) Storage Life MIL-STD-883, Method 1008, TA = 170°C 1000 hrs 77 Temperature Cycle MIL-STD-883, Method 1010, -65°C to +150°C 500 cycles 77 Latch-Up — Pre/Post Reading 6 Electro-Thermally Induced Gate Leakage — Pre/Post Reading 6 ESD, Human Body Model CDF-AEC-Q100-002 Pre/Post Reading x per test Electrical Distributions Per Specification — 30 www.allegromicro.com Comments Test to failure, All leads > TBD 5 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH FUNCTIONAL DESCRIPTION Chopper-Stabilized Technique. These devices use a proprietary dynamic offset cancellation technique, with an internal high-frequency clock to reduce the residual offset voltage of the Hall element that is normally caused by device overmolding, temperature dependencies, and thermal stress. This technique produces devices that have an extremely stable quiescent Hall output voltage, are immune to thermal stress, and have precise recoverability after temperature cycling. This technique will also slightly degrade the device output repeatability. SAMPLE & HOLD REG X The Hall element can be considered as a resistor array similar to a Wheatstone bridge. A large portion of the offset is a result of the mismatching of these resistors. The chopperstabilizing technique cancels the mismatching of the resistors by changing the direction of the current flowing through the Hall plate and Hall voltage measurement taps, while maintaining the Hall-voltage signal that is induced by the external magnetic flux. The signal is, then, captured by a sample-and-hold circuit. Powering up in the absence of a magnetic field (less than BOP and higher than BRP) will allow an indeterminate output state. The correct state is warranted after the first excursion beyond BOP or BRP. Bipolar switches may switch on removal of field but require field reversal for reliable operation over temperature range; latches will not switch on removal of magnetic field. B +V — HALL VOLTAGE + Dwg. AH-011-2 +I IOUT + ICC OUTPUT CURRENT Operation. The output of these devices turns ON when a magnetic field (north pole) perpendicular to the Hall sensor exceeds the release point threshold (BRP). After turn-ON, the output will source current equal to the device operating current plus a current source (IGND(H)). When the magnetic field is increased (south pole) above the operate point (BOP), the output will source current equal to the Hall-effect sensor operating current with the current source turned OFF (IGND(L)). Note especially that release can occur when the magnetic field is removed but to ensure release, a field reversal is required. The difference in the magnetic operate and release points is the hysteresis (Bhys) of the device. The hysteresis allows clean switching of the output even in the presence of external mechanical vibration or electrical noise. Dwg. EH-012 BOP BRP ICC 0 -B 0 FLUX DENSITY 6 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 +B Dwg. GH-034-6 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH APPLICATIONS INFORMATION It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by the chopper-stabilization technique. 'UA' PACKAGE – + 3 2 X 0.95 V 0.1 µF 100 Ω 1 SUPPLY Dwg. EH-011-2A Extensive applications information for Hall-effect sensors is available in: • Hall-Effect IC Applications Guide, Application Note 27701; • Hall-Effect Devices: Soldering, Gluing, Potting, Encapsulating, and Lead Forming, Application Note 27703.1; • Soldering of Through-Hole Hall-Sensor Dervices, Application Note 27703; and • Soldering of Surface-Mount Hall-Sensor Devices, Application Note 27703.2. More detailed descriptions of the chopper-stabilized circuit operation can be found in: • Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancelation, Technical Paper STP 97-10; and • Chopper-Stabilized Amplifiers With A Track-and-Hold Signal Demodulator, Technical Paper STP 99-1. All are provided in Allegro Electronic Data Book, AMS-702. or at www.allegromicro.com www.allegromicro.com 7 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH PACKAGE DESIGNATOR 'LH' (fits SC-74A solder-pad layout) Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions) 0.122 0.114 3.10 2.90 0.020 0.012 0.083 0.073 0.50 0.30 3 1 2 0.118 0.106 2.10 1.85 0.020 BSC 3 1 2 3.00 2.70 GAUGE PLANE REF 0° TO 8° 0.037 0.006 0.000 SEATING PLANE 0.55 0.020 REF 0.045 0.032 MIN BSC 0.0079 0.0050 0.15 0.00 0.20 0.127 1.13 0.87 Dwg. MA-010-3C in Dwg. MA-010-3C mm 0.028 0.70 3 3 0.039 1.00 0.094 1 NOTES: 1. 2. 3. 4. 5. 8 0.25 0° TO 8° 0.95 MIN BSC BSC GAUGE PLANE SEATING PLANE 0.022 0.25 2 2.40 1 2 0.037 0.95 Dwg. MA-011-3 in Dwg. MA-011-3 mm Tolerances on package height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line). Exact body and lead configuration at vendor’s option within limits shown. Height does not include mold gate flash. Where no tolerance is specified, dimension is nominal. Add "LT" to part number for tape and reel. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH PACKAGE DESIGNATOR 'LT' (SOT89/TO-243AA) Dimensions in Inches (for reference only) 0.181 0.173 0.072 0.064 0.167 0.155 2 1 Dimensions in Millimeters (controlling dimensions) 0.063 0.055 3 0.102 0.090 0.0173 0.0138 0.090 0.084 4.25 3.94 0.0189 0.0142 0.0221 0.0173 0.047 0.035 0.059 BSC 4.60 4.40 1.83 1.62 2 1 3.00 BSC Dwg. MA-009-3A in Dwg. MA-009-3A mm 2.5 2.0 0.031 A B 0.102 0.8 2.6 A 0.181 1 2 2.29 2.13 0.56 0.44 1.50 0.098 0.079 B 0.44 0.35 0.48 0.36 BSC BSC 2.60 2.29 3 1.20 0.89 0.118 1.60 1.40 4.6 3 0.047 1 2 3 1.2 0.028 0.031 0.7 0.8 TYP TYP TYP TYP Pads 1, 2, 3, and A — Standard SOT89 Layout Pads 1, 2, 3, and B — Low-Stress Version Pads 1, 2, and 3 only — Lowest Stress, But Not Self Aligning Pads 1, 2, 3, and A — Standard SOT89 Layout Pads 1, 2, 3, and B — Low-Stress Version Pads 1, 2, and 3 only — Lowest Stress, But Not Self Aligning Dwg. MA-012-3 in Dwg. MA-012-3 mm NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Supplied in bulk pack (500 pieces per bag) or add "TR" to part number for tape and reel. 3. Only low-temperature (≤240°C) reflow-soldering techniques are recommended for SOT89 devices. www.allegromicro.com 9 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH PACKAGE DESIGNATOR ‘UA’ Dimensions in Millimeters (for reference only) Dimensions in Inches (controlling dimensions) 0.164 0.159 4.17 4.04 0.062 0.058 45° 1.57 1.47 45° 0.122 0.117 3.10 2.97 45° 45° 0.085 1 2 3 0.031 2.16 1 2 0.79 3 MAX MAX 0.640 0.600 16.26 15.24 0.0173 0.0138 0.0189 0.0142 SEE NOTE 0.44 0.35 0.48 0.36 SEE NOTE 1.27 0.050 BSC BSC Dwg. MH-014E in Dwg. MH-014E mm Radial Lead Form (order A3260xUA-LC) NOTES: 1. Tolerances on package height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line). 2. Exact body and lead configuration at vendor’s option within limits shown. 3. Height does not include mold gate flash. 4. Recommended minimum PWB hole diameter to clear transition area is 0.035" (0.89 mm). 5. Where no tolerance is specified, dimension is nominal. 6. Supplied in bulk pack (500 pieces per bag). 1 2 3 0.108" (2.74 mm) 0.620" 0.500" (15.7 mm 12.7 mm) 0.100" (2.5 mm) Dwg. MH-026 NOTE: Lead-form dimensions are the nominals produced on the forming equipment. No dimensional tolerance is implied or guaranteed for bulk packaging (500 pieces per bag). 10 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH 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. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro products are not authorized for use as critical components in life-support appliances, devices, or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties that may result from its use. www.allegromicro.com 11 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH HALL-EFFECT SENSORS UNIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number A3121x A3122x A3123x A3141x A3142x A3143x A3144x A3161E A3163E A3240x A3250x A3251x Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range 220 to 500 80 to 410 260 to 430 120 to 360 230 to 470 160 to 330 30 to 175 10 to 145 115 to 245 60 to 190 205 to 355 150 to 300 35 to 450 25 to 430 <160 (Typ 130) >30 (Typ 110) <160 (Typ 98) >30 (Typ 79) <50 (Typ 35) >5 (Typ 25) <50 to >350 _ <50 to >350 _ Oper. Temp. 60 to 150 70 to 140 70 to 140 20 to 80 30 to 80 30 to 80 >20 5 to 80 5 to 40 Typ 10 5 to 35 5 to 35 E, L E, L E, L E, L E, L E, L E, L E E E, L J, L J, L A3361E <125 >40 5 to 30 E A3362E <125 >40 5 to 30 E Replaces and Comments Packages LT, UA 3019, 3113, 3119 LT, UA LT, UA LT, UA 3040, 3140 LT, UA LT, UA LT, UA 3020, 3120 LT, UA 2-wire operation LT, UA 2-wire LH, LT, UA chopper stabilized UA programmable, chopper stabilized UA programmable, chopper stabilized 2-wire, chopper stabilized, LH, LT, UA output normally high 2-wire, chopper stabilized, LH, LT, UA output normally low MICROPOWER OMNIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number Operate Release Hysteresis Points (G) Points (G) (G) Over Oper. Voltage & Temp. Range A3209E A3210E A3212E >-60, <60 >-60, <60 >-55, <55 <-5, >5 <-5, >5 <-10, >10 Typ 7.7 Typ 7.7 Typ. 8 Oper. Temp. Packages Average Supply Current (µA) E E E LH, UA LH, UA LH, UA <425 (Typ 145) <60 (Typ 8.8) <10 (Typ 4.2) BIPOLAR HALL-EFFECT DIGITAL SWITCHES Partial Part Number Operate Release Hysteresis Point (G) Point (G) (G) Over Oper. Voltage & Temp. Range UGx3132 <95 (Typ 32) UGx3133 <75 (Typ 32) UGx3134 -40 to 50 A3260x <30 (Typ 10) >-95 (Typ -20) >30 (Typ 52) >-75 (Typ -20) >30 (Typ 52) -50 to 40 5 to 55 >-30 (Typ -10) Typ 20 Oper. Temp. Packages K, L, S K, L, S E, L E, L LT, UA LT, UA LT, UA LH, LT, UA Replaces and Comments 3030, 3130, 3131 2 wire, chopper stabilized Notes: 1) Typical data is at TA = +25°C and nominal operating voltage. 2) “x” = Operating Temperature Range [suffix letter or (prefix)]: S (UGN) = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K (UGS) = -40°C to +125°C, L (UGL) = -40°C to +150°C. 12 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000