Data Sheet 27622.60A 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES Package Suffix ‘LH’ Pinning X 3 V DD OUTPUT 2 GROUND SUPPLY 1 Dwg. PH-016-1 Pinning is shown viewed from branded side. ABSOLUTE MAXIMUM RATINGS at TA = +25°C Supply Voltage, VDD ............................. 5 V Magnetic Flux Density, B .......... Unlimited Output Off Voltage, VOUT ..................... 5 V Output Current, IOUT .......................... 1 mA The A3209Ex and A3210Ex integrated circuits are ultra-sensitive, pole independent Hall-effect switches with a latched digital output. They are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers. 2.5 volt to 3.5 volt operation and a unique clocking scheme to reduce the average operating power requirements – the A3209Ex to 400 µW, the A3210Ex to 25 µW! Except for operating duty cycle and average operating current, the A3209Ex and A3210Ex are identical. Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allows these devices to easily replace reed switches for superior reliability and ease of manufacturing, while eliminating the requirement for signal conditioning. Improved stability is made possible through chopper stabilization (dynamic offset cancellation), which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. These devices include on a single silicon chip a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output. Advanced BiCMOS processing is used to take advantage of low-voltage and low-power requirements, component matching, very low input-offset errors, and small component geometries. The A3209Ex and A3210Ex are rated for operation over a temperature range of -40°C to +85°C. Two package styles provide a magnetically optimized package for most applications. Suffix ‘LH’ is a miniature low-profile surface-mount package while suffix ‘UA’ is a three-lead ultra-mini-SIP for through-hole or surface mounting. FEATURES ■ ■ ■ ■ Junction Temperature, TJ ............... +170°C Operating Temperature Range, TA ............................... -40°C to +85°C Storage Temperature Range, TS .............................. -65°C to +170°C Caution: These CMOS devices have input static protection (Class 3) but are still susceptible to damage if exposed to extremely high static electrical charges. ■ ■ ■ ■ Micropower Operation Operate With North or South Pole 2.5 V to 3.5 V Battery Operation Chopper Stabilized Superior Temperature Stability Extremely Low Switch-Point Drift Insensitive to Physical Stress ESD Protected to 5 kV Solid-State Reliability Small Size Easily Manufacturable With Magnet Pole Independence Always order by complete part number: the prefix ‘A’ + the basic four-digit part number + the suffix ‘E’ to indicate operating temperature range + a suffix to indicate package style, e.g., A3210ELH . 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES FUNCTIONAL BLOCK DIAGRAM SUPPLY SWITCH LATCH X OUTPUT SAMPLE & HOLD DYNAMIC OFFSET CANCELLATION TIMING LOGIC GROUND Dwg. FH-020-5 Package Suffix ‘UA’ Pinning X 600 Suffix "UA" RθJA = 206°C/W 500 V DD Suffix "LH" RθJA = 248°C/W 300 1 2 GROUND 400 SUPPLY 200 100 0 20 40 60 100 80 120 AMBIENT TEMPERATURE in °C 140 160 Dwg. PH-016 180 Dwg. GH-046-3A 2 3 OUTPUT ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS 700 Pinning is shown viewed from branded side. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2000, Allegro MicroSystems, Inc. 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES ELECTRICAL CHARACTERISTICS with CBYPASS = 0.1 µF, over operating voltage and temperature range (unless otherwise specified). Limits Characteristic Symbol Test Conditions Min. Typ. Max. Units 2.5 2.75 3.5 V Supply Voltage Range VDD Operating1) Output Leakage Current IOFF VOUT = 3.5 V, BRPN < B < BRPS – «1.0 1.0 µA Output On Voltage VOUT IOUT = 1 mA, VDD = 2.5 V – 105 300 mV Awake Time tawake 30 60 90 µs Period tperiod A3209Ex 240 480 720 µs A3210Ex 30 60 90 ms A3209Ex – 12.5 – % A3210Ex – 0.10 – % – 340 – kHz Duty Cycle Chopping Frequency Supply Current (2.5 ≤ VDD ≤3.5 V) d.c. fC IDD(EN) Chip awake (enabled) 0.1 – 3.0 mA IDD(DIS) Chip asleep (disabled) 1.0 10 50 µA IDD(AVG) A3209Ex, VDD = 2.75 V – 145 425 µA A3209Ex, VDD = 3.5 V – 195 425 µA A3210Ex, VDD = 2.75 V – 8.8 25 µA A3210Ex, VDD = 3.5 V – 13 60 µA NOTES: 1. Operate and release points will vary with supply voltage. 2. BOPx = operate point (output turns ON); BRPx = release point (output turns OFF). 3. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only. MAGNETIC CHARACTERISTICS with CBYPASS = 0.1 µF, over operating voltage and temperature range (unless otherwise specified). Limits Characteristic Symbol Operate Points BOPS Release Points Hysteresis Test Conditions Min. Typ. Max. Units South pole to branded side – 30 60 G BOPN North pole to branded side -60 -35 – G BRPS South pole to branded side 5.0 22 – G BRPN North pole to branded side – -27 -5.0 G Bhys |BOPx - BRPx| – 7.7 – G NOTES: 1. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G. 2. Typical Data is at TA = +25°C and VDD = 2.75 V and is for design information only. www.allegromicro.com 3 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES TYPICAL OPERATING CHARACTERISTICS as a function of temperature SWITCH POINTS 60 SWITCH POINTS IN GAUSS 40 BOPS BRPS 20 VDD = 2.75 V 0 -20 BRPN BOPN -40 -60 -50 -25 0 25 50 75 AMBIENT TEMPERATURE IN °C 100 Dwg. GH-027-2 A3209-- SUPPLY CURRENT A3210-- SUPPLY CURRENT 16 200 VDD = 3.5 V 180 VDD = 3 V 160 VDD = 2.5 V 140 120 -50 -25 0 25 50 AMBIENT TEMPERATURE IN °C 4 AVERAGE SUPPLY CURRENT IN µA AVERAGE SUPPLY CURRENT IN µA 220 75 100 Dwg. GH-028-7 14 VDD = 3.5 V 12 VDD = 2.5 V 10 VDD = 3 V 8.0 6.0 -50 -25 0 25 50 AMBIENT TEMPERATURE IN °C 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 75 100 Dwg. GH-028-6 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES TYPICAL OPERATING CHARACTERISTICS as a function of supply voltage SWITCH POINTS 60 SWITCH POINTS IN GAUSS 40 BOPS BRPS 20 TA = 25°C 0 -20 BRPN BOPN -40 -60 2.4 2.6 2.8 3.0 3.2 3.4 SUPPLY VOLTAGE IN VOLTS 3.6 Dwg. GH-057-1 A3210-- SUPPLY CURRENT 16 200 14 AVERAGE SUPPLY CURRENT IN µA AVERAGE SUPPLY CURRENT IN µA A3209-- SUPPLY CURRENT 220 180 160 140 120 2.4 TA = 25°C 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE IN VOLTS www.allegromicro.com 3.4 3.6 Dwg. GH-058-6 12 10 8.0 6.0 2.4 TA = 25°C 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE IN VOLTS 3.4 3.6 Dwg. GH-058-5A 5 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES 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 VDD = VOUT = 3 V High-Temperature Operating Life (HTOL) JESD22-A108, TA = 150°C, TJ ≤ 165°C 408 hrs 77 VDD = VOUT = 3 V Accelerated HTOL TA = 175°C, TJ ≤ 190°C 504 hrs 77 VDD = VOUT = 3 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 3 per test Test to failure, All leads > 5 kV ESD, Machine Model JESD22-A115 Pre/Post Reading 3 per test Test to failure, All leads > 350 V Electrical Distributions Per Specification — 30 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Comments 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES FUNCTIONAL DESCRIPTION Low Average Power. Internal timing circuitry activates the sensor for 60 µs and deactivates it for the remainder of the period (480 µs for the A3209Ex and 60 ms for the A3210Ex). A short "awake" time allows for stabilization prior to the sensor sampling and data latching on the falling edge of the timing pulse. The output during the "sleep" time is latched in the last sampled state. The supply current is not affected by the output state. SAMPLE & HOLD +V X PERIOD 60 µs - "AWAKE" IDD(EN) "SLEEP" SAMPLE & OUTPUT LATCHED Dwg. EH-012-1 IDD(DIS) 0 Dwg. WH-017-1 B +V Chopper-Stabilized Technique. 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. 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. The chopper-stabilizing technique cancels the mismatching of the resistor circuit by changing the direction of the current flowing through the Hall plate using CMOS switches and Hall voltage measurement taps, while maintaing the Hall-voltage signal that is induced by the external magnetic flux. The signal is then captured by a sample-andhold circuit and further processed using low-offset bipolar circuitry. 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. A relatively high sampling frequency is used in order that faster signals can be processed. More detailed descriptions of the circuit operation can be found in: Technical Paper STP 97-10, Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancellation and Technical Paper STP 99-1, Chopper-Stabilized Amplifiers With A Track-and-Hold Signal Demodulator. www.allegromicro.com — HALL VOLTAGE + Dwg. AH-011-2 Operation. The output of this device switches low (turns on) when a magnetic field perpendicular to the Hall sensor exceeds the operate point BOPS (or is less than BOPN). After turn-on, the output is capable of sinking up to 1 mA and the output voltage is VOUT(ON). When the magnetic field is reduced below the release point BRPS (or increased above BRPN), the device output switches high (turns off). The difference in the magnetic operate and release points is the hysteresis (Bhys) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G. 7 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES SENSOR LOCATIONS (±0.005” [0.13 mm] die placement) OUTPUT OFF 5V MAX B OPS OUTPUT VOLTAGE B OPN Package Designator ‘LH’ ACTIVE AREA DEPTH 0.011" 0.28 mm NOM OUTPUT ON 0 0 -B 3 0.038" 0.96 mm BRPS BRPN 0.059" 1.49 mm A +B MAGNETIC FLUX 1 Dwg. GH-043-1 Applications. Allegro's pole-independent sensing technique allows for operation with either a north pole or south pole magnet orientation, enhancing the manufacturability of the device. The state-of-the-art technology provides the same output polarity for either pole face. 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. This is especially true due to the relatively high impedance of battery supplies. The simplest form of magnet that will operate these devices is a bar magnet with either pole near the branded surface of the device. Many other methods of operation are possible. Extensive applications information on magnets and Hall-effect sensors is also available in the Allegro Electronic Data Book AMS-702 or Application Note 27701, or at 2 Dwg. MH-025 Package Designators ‘UA’, UA-LC', and ‘UA-TL’ ACTIVE AREA DEPTH 0.018" 0.46 mm NOM 0.081" 2.06 mm 0.057" 1.45 mm A BRANDED SURFACE 1 2 3 www.allegromicro.com Dwg. MH-011-11 2 OUTPUT SUPPLY (3 V BATTERY) 1 X V DD 3 50 kΩ 10 pF 0.1 µF 8 Although sensor location is accurate to three sigma for a particular design, product improvements may result in small changes to sensor location. Dwg. EH-013-2 Allegro 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES PACKAGE DESIGNATOR ‘LH’ (fits SC-74A solder-pad layout) Dimensions in Inches (for reference only) 3.10 2.90 0.122 0.114 0.020 0.012 0.083 0.073 3 1 2 Dimensions in Millimeters (controlling dimensions) 0.50 0.30 0.0079 0.0050 0.118 0.106 0.020 MIN 0.022 0.006 0.000 1 3.00 2.70 2 0.25 MIN 0° TO 8° REF 0.037 BSC 3 0.55 0° TO 8° REF 2.10 1.85 0.20 0.127 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 1.00 0.039 2.40 0.094 1 1 2 2 0.95 0.037 Dwg. MA-011-3 in Dwg. MA-011-3 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. Where no tolerance is specified, dimension is nominal. www.allegromicro.com 9 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES PACKAGE DESIGNATOR ‘UA’ Dimensions in Millimeters (for reference only) Dimensions in Inches (controlling dimensions) 4.17 4.04 0.164 0.159 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 0.0173 0.0138 0.640 0.600 0.0189 0.0142 SEE NOTE 0.79 16.26 15.24 BSC 0.44 0.35 0.48 0.36 SEE NOTE 0.050 1.27 Dwg. MH-014E in 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 3 MAX 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 BSC Dwg. MH-014E mm 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES Surface-Mount Lead Form (order A32xxEUA-TL) Dimensions in Millimeters (for reference only) Dimensions in Inches (controlling dimensions) 2.41 0.095 ±0.13 ±0.005 0.051 0.002 MAX MAX 0.004 0°–8° MAX 0.10 0.020 MAX MIN FLAT Dwg. MH-015 in 0°–8° 0.51 MIN FLAT Dwg. MH-015 mm Radial Lead Form (order A32xxEUA-LC) 1 2 3 0.108" (2.74 mm) 0.620" 0.500" (15.7 mm 12.7 mm) 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. 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). 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 3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES HALL-EFFECT SENSORS Partial Part Number Avail. Oper. Characteristics at TA = +25°C Temp. BOP max BRP min Bhys typ Features HALL-EFFECT UNIPOLAR & OMNIPOLAR 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 E E/L E/L E/L E/L E/L E/L +50 ±60 ±60 +125 +125 +160 +160 +175 -25 +200 +230 +340 +350 +400 +440 +450 +5.0 ±5.0 ±5.0 +40 +40 +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 Notes chopper stabilized 1 400 µW, chopper stabilized 25 µW, chopper stabilized 2-wire, chopper stabilized, inverted output 2-wire, chopper stabilized 2-wire output 1 output 2 300 mA power driver output 2 2 1 † HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys 3260 E/L +30 -30 20 bipolar switch, 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 power driver output 1, 3 3626 S +150 -150 200 400 mA power driver output 1, 3 3195 E/L +160 -160 220 active pulldown 1 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* 3 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. Outputs may be tied together for omnipolar operation. 3. 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