Data Sheet 27631.50 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH Suffix Code 'LH' Pinning 3 X NC NO (INTERNAL) CONNECTION Dwg. PH-003-5 2 GROUND SUPPLY 1 Pinning is shown viewed from branded side. 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 lowprofile surface-mount package, ‘–LT’ is a miniature SOT-89/TO243AA transistor package for surface-mount applications; while suffix ‘–UA’ is a three-lead ultra-mini-SIP for through-hole mounting. ADVANCE INFORMATION (subject to change without notice) June 30, 2000 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 (SIP) Suffix Code 'LT' Pinning (SOT-89/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 © 2000, 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 NOTE — Typical Data is at TA = +25°C and VCC = 12 V and is for design information only. www.allegromicro.com 3 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH This page intentionally left blank 4 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3260 2-WIRE, CHOPPER-STABILIZED, PRECISION HALL-EFFECT BIPOLAR SWITCH SENSOR LOCATIONS (±0.005” [0.13 mm] die placement) Package Designator “LH” ACTIVE AREA DEPTH 0.011" 0.28 mm NOM Allegro 0.059" 1.49 mm 3 0.038" 0.96 mm A 1 2 Dwg. MH-025 Package Designator “LT” ACTIVE AREA DEPTH 0.030" 0.76 mm NOM 0.088" 2.24 mm 0.045" 1.14 mm A 1 2 3 Dwg. MH-008-8 Package Designators “UA” and "UA-TL" ACTIVE AREA DEPTH 0.018" 0.46 mm NOM 0.080" 2.04 mm ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS 700 600 500 Suffix "–UA" RθJA = 206°C/W 400 Suffix "–LT" RθJA = 258°C/W Suffix "–LH" RθJA = 248°C/W 300 200 100 Suffix "E–" Suffix "L–" 0 0.056" 1.44 mm 20 40 60 80 120 100 AMBIENT TEMPERATURE in °C 140 160 180 Dwg. GH-046-2C A BRANDED SURFACE 1 2 3 Dwg. MH-011-9A Although sensor location is accurate to three sigma for a particular design, product improvements may result in small changes to sensor location. www.allegromicro.com 5 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. 6 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 — 30 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Comments Test to failure, All leads > TBD 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. B +V Dwg. EH-012 — 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)). 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. BOP BRP ICC Applications. 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 chopperstabilization technique. 0 -B 0 FLUX DENSITY +B Dwg. GH-034-6 Extensive applications information on magnets and Halleffect sensors is also available in the Allegro Electronic Data Book AMS-702 or Application Note 27701. 'UA' PACKAGE – + 3 2 X 0.95 V 0.1 µF 100 Ω 1 SUPPLY Dwg. EH-011-2A 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) 0.122 0.114 0.020 0.012 0.083 0.073 3.10 2.90 0.0079 0.0050 3 1 Dimensions in Millimeters (controlling dimensions) 0.118 0.106 2 0.020 MIN 0.022 0.006 0.000 3 1 3.00 2.70 2 0.25 MIN 0° TO 8° REF 0.037 BSC 2.10 1.85 0.20 0.127 0.55 0° TO 8° REF 0.50 0.30 0.95 BSC 0.043 0.035 0.049 0.035 1.10 0.90 1.25 0.90 0.15 0.00 Dwg. MA-010-3B in Dwg. MA-010-3B mm 0.028 0.70 3 3 0.039 1.00 0.094 1 NOTES: 1. 2. 3. 4. 8 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. 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' (SOT-89/TO-243AA) Dimensions in Inches (for reference only) 0.181 0.173 0.072 0.064 0.167 0.155 0.063 0.055 2 1 Dimensions in Millimeters (controlling dimensions) 3 0.0173 0.0138 0.090 0.084 0.102 0.090 4.60 4.40 1.83 1.62 4.25 3.94 0.0189 0.0142 0.0221 0.0173 0.047 0.035 0.059 BSC 2 1 3.00 BSC Dwg. MA-009-3A in Dwg. MA-009-3A mm 2.5 2.0 B 0.031 A 0.102 0.8 2.6 A 4.6 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 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 SOT-89 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 SOT-89 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 NOTE: Exact body and lead configuration at vendor’s option within limits shown. 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° 0.085 1 2 3 45° 0.031 2.16 MAX 1 2 3 0.79 MAX 0.0173 0.0138 0.640 0.600 0.0189 0.0142 SEE NOTE 16.26 15.24 0.44 0.35 0.48 0.36 SEE NOTE 0.050 1.27 BSC BSC Dwg. MH-014E in Dwg. MH-014E mm Surface-Mount Lead Form (Suffix '-TL') 2.41 0.095 ±0.13 ±0.005 0.002 0.051 MAX MAX 0.004 0°–8° MAX 0.10 0.020 MIN FLAT MAX Dwg. MH-015 in 0°–8° 0.51 MIN FLAT Dwg. MH-015 mm 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. 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 Partial Part Number Avail. Oper. Characteristics at TA = +25°C Temp. BOP(max) BRP(min) Bhys(typ) Features HALL-EFFECT UNIPOLAR SWITCHES in order of BOP and Bhys 3240 3209 3210 3361 3362 3161 3141 3235 E/L E E E E E E/L S 5140 3142 3143 3144 3122 3123 3121 3150 E E/L E/L E/L E/L E/L E/L J +50 ±60 ±60 +55* +110 +160 +160 +175 -25 +200 +230 +340 +350 +400 +440 +450 +40 to +850 +5.0 ±5.0 ±5.0 +110‡ +55 +30 +10 +25 -175 +50 +75 +165 +50 +140 +180 +125 – 10 7.7 7.7 5.0* 5.0* 20 55 15* 15* 55 55 55 55 105 105 105 20 Notes chopper stabilized 400 µW, chopper stabilized 25 µW, chopper stabilized 2-wire, chopper stabilized 2-wire, chopper stabilized 2-wire 1 output 1 output 2 300 mA output 2 2 1, 3 programmable, chopper stabilized 1 † HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys 3260 E/L +30 -30 20 bipolar, chopper stabilized 3280 E/L +40 -40 45 chopper stabilized 3134 E/L +50 -50 27 bipolar switch 3133 K/L/S +75 -75 52 bipolar switch 3281 E/L +90 -90 100 chopper stabilized 3132 K/L/S +95 -95 52 bipolar switch 3187 E/L +150 -150 100* 3177 S +150 -150 200 3625 S +150 -150 200 900 mA outputs 1, 3, 5 3626 S +150 -150 200 400 mA outputs 1, 3, 5 3195 E/L +160 -160 220 1, 4 3197 L +160 -160 230 1 3175 S +170 -170 200 3188 E/L +180 -180 200* 3283 E/L +180 -180 300 chopper stabilized 3189 E/L +230 -230 100* 3275 S +250 -250 100* 5 3185 E/L +270 -270 340* Operating Temperature Ranges: S = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C Notes 1. Protected. 2. Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dc motor control. 3. Power driver output. 4. Active pull down. 5. Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control. * Minimum. ‡ Maximum † Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversal for reliable operation over operating temperature range. 12 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000