ATS601LSG Single Element, Tooth Detecting Speed Sensor IC Features and Benefits Description • Digital output representing target profile • Single Hall element for twist–insensitive mounting and direction insensitive polarity • True zero–speed operation • Defined power-on state • Air gap independent switchpoints • Chopper stabilized • Operation down to 3.3 V • Factory programmable options: ▫ Output polarity: low or high opposite tooth ▫ Startup hysteresis: 40 G or 80 G ▫ Threshold location: 30% or 50% from signal peak ▫ Threshold update: single tooth (continuous) or four– tooth memory • Fully synchronous digital logic with Scan Path and IDDQ testing The ATS601LSG is a unique addition to the Allegro™ camshaft sensor IC family of products. As a single element, defined power–on state, sensor IC, it provides first falling edge detection, high running mode edge accuracy, and direction/orientation insensitivity over the full operating range of air gap, speed, and temperature. The ATS601LSG consists of an optimized Hall IC and a simple magnetic pellet configuration. Package: 4–pin SIP (suffix SG) The single element Hall IC and magnetic pellet configuration switches in response to magnetic signals created by a ferromagnetic target. The IC contains a low bandwidth filter that increases the noise immunity and the signal–to–noise ratio of the sensor IC. Sophisticated digital circuit design eliminates the detrimental effects of target geometry discontinuity, magnet and system offsets, and thermal gradients. Signal processing is used to provide zero speed performance independent of air gap and also to dynamically adapt device performance to the typical operating conditions found in automotive applications, particularly camshaft sensing. The resulting output of the device is a digital representation of the ferromagnetic target profile. A number of factory programmable options allow for performance optimization to meet specific application requirements. Not to scale The ATS601 is provided in a 4–pin SIP package (suffix SG) that is lead (Pb) free, with 100% matte tin leadframe plating. Functional Block Diagram VCC Internal Regulator (Analog) Multiplexed Test Signals TEST Internal Regulator (Digital) Chopper Stabilization Synchronous Digital Controller Hall Amplifier Offset Adjust ADC Low Pass Filters Tooth Detection Offset Control Application Trim Stop Mode Timer OUT Current Limit Temperature Compensation GND ATS601LSG–DS ATS601 Single Element, Tooth Detecting Speed Sensor IC Selection Guide Part Number Packing* ATS601LSGTN–[A]–[AAN]–T 800 pieces per 13–in. reel *Contact Allegro™ for additional packing options. Configuration Options ATS601LSGTN - A - A A N - T Leadframe plating – T : 100% matte tin Running Mode Threshold Update 1: Single-tooth (continuous) 4: Four-tooth (memory-based) Switchpoint Level U: Upper (30% less than input signal peak) M: Mid (50% less than input signal peak) Startup Hysteresis N: Narrow (40 G) W: Wide (80 G) Output Polarity LT: Low opposite target tooth HT: High opposite target tooth Allegro Identifier and Device Type – ATS601 Operating Temperature Range, TA – L: –40°C to 150°C Package Designator – SG Instructions (Packing) – TN: Tape and reel, 800 pieces per 13-in. reel Absolute Maximum Ratings Characteristic Symbol Notes Rating Unit Supply Voltage VCC 27 V Reverse Supply Voltage VRCC –18 V Reverse Supply Current IRCC –50 mA Output Voltage VOUT 27 V Reverse Output Voltage VROUT RPU > 1000 Ω Output Current IOUT Internal current limiting is intended to protect the device from output short circuits, but is not intended for continuous operation. Reverse Output Current IROUT VOUT > –0.5 V, TA = 25°C V 25 mA –50 mA Operating Ambient Temperature TA –40 to 150 ºC Maximum Junction Temperature TJ(max) 165 ºC Tstg –65 to 170 ºC Storage Temperature L temperature range –0.5 Pin–out Diagram Terminal List Table 1 2 3 4 Name Number Function VCC 1 Supply voltage OUT 2 Open drain output TEST 3 Test pin (MUX) GND 4 Ground Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 2 ATS601 Single Element, Tooth Detecting Speed Sensor IC OPERATING CHARACTERISTICS Valid using Allegro reference target 8X, and VCC and TA within specification; unless otherwise specified Characteristic Min. Typ.1 Max. Unit2 3.3 – 24 V VCC(UV)rise Rising VCC (0 V → 5 V) 2.5 – 3.1 V VCC(UV)fall 2.4 – 3.0 V Symbol Test Conditions Electrical Characteristics Supply Voltage3 VCC Undervoltage Lockout4 Continuous operation, TJ < TJ(max) Falling VCC (5 V → 0 V) Supply Zener Clamp Voltage VZsupply ICC = ICC(max) + 3 mA; TA = 25°C 27 – – V Reverse Supply Zener Clamp Voltage VRZsupply ICC = –3 mA, TA = 25°C –18 – – V 4 – 10 mA VCC > VCC(min) – – 1 ms Connected as in figure 1 – High – V Supply Current ICC Power-On Characteristics Power-On Time5 Power-On tPO State6 POS Output Stage Characteristics IOUT = 15 mA, Output = On state (VOUT = Low) – – 450 mV VZoutput IOUT = 3 mA, TA = 25°C 27 – – V Output Current Limit IOUT(LIM) Output = On state (VOUT = Low) 25 – 80 mA Output Leakage Current IOUT(OFF) VOUT = 24 V, Output = Off state (VOUT = High) – – 10 μA Output Rise Time tr Measured 10% to 90% of VOUT ; RPU = 1 kΩ , CL = 4.7 nF, VPU = 5 V; see figure 2 – 10 – μs Output Fall Time tf Measured 90% to 10% of VOUT ; RPU = 1 kΩ , CL = 4.7 nF, VPU = 5 V; see figure 2 3 6 10 μs Output Delay Time7 td 1 kHz sinusoidal input signal; see figure 3 – 50 – μs 1.0 – 3.0 mm 0.5 – 2.5 mm 60 – 1000 GPKPK 120 – 1000 GPKPK – 8 – kHz Output On Voltage VOUT(SAT) Output Zener Clamp Voltage Performance Characteristics Operational Air Gap Range8 AG Magnetic Signal Range BSIG Analog Signal Bandwidth BW N option W option N option W option Allegro 8X reference target Peak to peak signal Equivalent to –3 dB cutoff frequency Continued on the next page… VPU VS 1 VCC V+ VOUT(High) RPU % 100 90 ATS601 CBYPASS 0.1 μF 3 (Float) TEST OUT Output 2 CL GND 4 Figure 1. Typical application circuit 10 0 VOUT(Low) tr tf Figure 2. Output Rise Time and Output Fall Time Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 ATS601 Single Element, Tooth Detecting Speed Sensor IC OPERATING CHARACTERISTICS (continued) Valid using Allegro reference target 8X, and VCC and TA within specification; unless otherwise specified Characteristic Symbol Test Conditions Min. Typ.1 Max. Unit2 – Low – V – High – V – 40 – G – 80 – G Operating Mode Characteristics Output Polarity VOUT Startup Hysteresis BHYS(su) LT option HT option N option W option 1 option Threshold Update Memory – 1 – tooth – 4 – tooth % of peak-to-peak, referenced to tooth signal, see figure 4 25 30 35 % 45 50 55 % % of peak-to-peak signal 5 10 15 % Timer interval to initiate Stop mode, no sensed magnetic edges – 5 – s – 167 – kHz 4 option BST Running Mode Internal Hysteresis BHYS(rm) Stop Mode Timer Period tSM Chopper Frequency fC Amount of signal movement needed to generate first output edge Number of target teeth (peaks) stored in memory for threshold update algorithm – Running Mode Switchpoint Opposite target tooth, connected as in figure 1 U option M option 1Typical Switchpoints VPROC(high) td VPROC(low) Time Output Signal, VOUT tf VOUT(high) 90% VOUT VPROC(high) BST BHYS BHYS VPROC BST Magnetic Gradient (B) Processed Input Signal, VPROC values are at TA = 25°C and VCC = 12 V. Performance may vary for individual units, within the specified maximum and minimum limits. 21 G (gauss) = 0.1 mT (millitesla). 3Maximum voltage must be adjusted for power dissipation and junction temperature; see Power Derating section. 4Between V (min) and V CC CC(UV) output switching continues to occur but device performance is not guaranteed. 5Power–On Time consists of the time from when V CC rises above VCC(min) until the earliest output edge is possible. 6Independent of output polarity option (HT or LT). 7Output Delay Time is the duration from when a crossing of the magnetic signal switchpoint, B , occurs to when the electrical output signal, V ST OUT , reaches 90% of VOUT(high). 8Reduced minimum air gap with N option due to potential for extra switching on first tooth due to magnetic overshoot larger than startup hysteresis, characteristic of the Allegro 8X reference target. Device functions properly in Running mode down to 0.5 mm air gap. VPROC(low) 10% VOUT VOUT(low) 0 Target Mechanical Profile Time Figure 3. Output Delay Time and Output Fall Time Figure 4. Running Mode Switchpoint and Internal Hysteresis Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 4 ATS601 Single Element, Tooth Detecting Speed Sensor IC Power Derating Thermal Characteristics may require derating at maximum conditions, see Power Derating section Characteristic Symbol Test Conditions* Single layer PCB, with copper limited to solder pads RθJA Package Thermal Resistance Single layer PCB, with copper limited to solder pads and 3.57 (23.03 cm2) copper area each side in.2 Value Unit 126 ºC/W 84 ºC/W *Additional thermal information available on the Allegro website Maximum Allowable V CC(V) Power Derating Curve 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 V CC(max) (R θJA = 84 °C/W) (R θJA= 126 °C/W) V CC(min) 20 40 60 80 100 120 140 160 180 Temperature (°C) Power Dissipation, PD (m W) Power Dissipation versus Ambient Temperature 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 RQJA = 84 ºC/W RQJA = 126 ºC/W 20 40 60 80 100 120 Temperature (°C) 140 160 180 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 5 ATS601 Single Element, Tooth Detecting Speed Sensor IC Characteristic Performance Supply Current versus Ambient Temperature 10 9 I CC (mA) 8 VCC (V) 7 3.3 6 12 24 5 4 -50 0 50 100 150 TA (°C) Output On Voltage versus Ambient Temperature 600 VOUT(SAT) (mV) 500 I OUT (mA) 400 5 300 10 200 15 100 20 0 -50 0 50 100 150 TA (°C) Output Fall Time versus Ambient Temperature VPU = 5V, RPU = 1kΩ, CL = 4.7 nF 10 9 t f (μs) 8 7 6 5 4 3 -50 0 50 100 150 TA (°C) Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 6 ATS601 Single Element, Tooth Detecting Speed Sensor IC RelaƟve Timing Accuracy versus Air Gap RelaƟve Timing Accuracy versus Air Gap Rising Mechanical Edge, "U" Switchpoint Op on 1000 rpm, Rela ve to 0.5 mm Air Gap Rising Mechanical Edge, "M" Switchpoint Op on 1000 rpm, Rela ve to 0.5 mm Air Gap 1 TA (°C) 0.5 -40 0 25 -0.5 85 Edge PosiƟon (°) Edge PosiƟon (°) 1 150 -1 0 0.5 1 1.5 2 2.5 3 TA (°C) 0.5 -40 0 25 -0.5 85 150 -1 0 3.5 0.5 1 2.5 3 3.5 RelaƟve Timing Accuracy versus Air Gap RelaƟve Timing Accuracy versus Air Gap Falling Mechanical Edge, "M" Switchpoint Op on 1000 rpm, Rela ve to 0.5 mm Air Gap 1 0.5 -40 0 25 -0.5 85 Edge PosiƟon (°) TA (°C) 150 -1 0 0.5 1 1.5 2 2.5 3 0.5 -40 0 25 -0.5 85 150 0 3.5 0.5 1 1.5 2 2.5 3 3.5 Air Gap (mm) Air Gap (mm) RelaƟve Timing Accuracy versus Speed RelaƟve Timing Accuracy versus Speed Rising Electrical Edge 25°C, Rela ve to 100 rpm Gear Speed Falling Electrical Edge 25°C, Rela ve to 100 rpm Gear Speed 1 1 AG (mm) 0.8 0.5 0.6 1 0.4 1.5 0.2 2 2.5 0 0 TA (°C) -1 500 1000 1500 Gear Speed (rpm) 2000 2500 3 Edge PosiƟon (°) Edge PosiƟon (°) 2 Falling Mechanical Edge, "U" Switchpoint Op on 1000 rpm, Rela ve to 0.5 mm Air Gap 1 Edge PosiƟon (°) 1.5 Air Gap (mm) Air Gap (mm) AG (mm) 0.8 0.5 0.6 1 0.4 1.5 0.2 2 2.5 0 0 500 1000 1500 2000 2500 3 Gear Speed (rpm) Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 7 ATS601 Single Element, Tooth Detecting Speed Sensor IC Reference Target Characteristics REFERENCE TARGET 8X Test Conditions Typ. Units Do Outside diameter of target 120 mm Face Width F Breadth of tooth, with respect to branded face 6 mm Circular Tooth Length t Length of tooth, with respect to branded face; measured at Do 23.6 mm Circular Valley Length tv Length of valley, with respect to branded face; measured at Do 23.6 mm Tooth Whole Depth ht 5 mm – – Symbol Key Branded Face of Package ØDO ht F t Outside Diameter Symbol tV Characteristic Material CRS 1018 Air Gap Branded Face of Package Reference Target 8X Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 8 ATS601 Single Element, Tooth Detecting Speed Sensor IC Functional Description Sensing Technology The ATS601LSG contains a single-chip Hall effect sensor IC, a 4-pin leadframe and a specially designed permanent magnet. The Hall IC supports a chopper stabilized Hall element that measures the magnetic gradient created by the passing of a ferromagnetic object. The difference in the magnetic field strength created by teeth and valleys allows the device to generate a digital output signal that is representative of the target features, independent of the direction of target rotation or rotational orientation of the sensor IC. The ATS601LSG gear tooth sensor device contains a self-calibrating Hall effect IC that provides a Hall element, a temperature compensated amplifier, and offset cancellation circuitry. The IC also contains a voltage regulator that provides supply noise rejection over the operating voltage range. The Hall transducers and the electronics are integrated on the same silicon substrate by a proprietary BiCMOS process. Changes in temperature do not greatly affect this device due to the stable amplifier design and the offset rejection circuitry. Start-Up Detection The ATS601LSG always powers-on in the high output state, independent of the polarity option (HT or LT) selected. The output will transition to the low state at the first mechanical edge corresponding to a high-to-low output transition. See figure 6. Threshold Update The ATS601 has two programmable options for the threshold update used to establish running mode switching levels. With single-tooth update (1 option) the switching threshold for a tooth Target motion Rising mechanical edge Falling mechanical edge Power-on opposite middle of valley Tooth Valley Target Mechanical Profile Output Polarity The polarity of the output is programmable to either be low opposite target teeth (LT option) or high opposite target teeth (HT option). See figure 5. HT option output |B| LT option output 0 Power-on opposite rising mechanical edge V+ HT option output Target Magnetic Profile Processed Input Signal, VPROC LT option output 0 HT option (Following) Output Switch State VOUT = High Power-on opposite middle of tooth Off On Off On Off On Off On HT option output LT option output VOUT = Low LT option (Inverting) Output Switch State On Off On Off On Off On Off Power-on opposite falling mechanical edge VOUT = High HT option output VOUT = Low LT option output Figure 5. Output Polarity (when connected as shown in figure 1) Figure 6. Start-up behavior (when connected as shown in figure 1) Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 9 ATS601 Single Element, Tooth Detecting Speed Sensor IC is established based on the measured peak value of the previous tooth. This option can be used with any number of teeth-targets, and is comparable to the Continuous Update mode used on many Allegro sensor ICs. With the four-tooth update (4 option), peak information from the last four teeth is stored in on-chip memory. Switching thresholds for the upcoming tooth are established based on the stored information from four teeth earlier. When used with four-tooth targets, this is allows for optimized switchpoints based on the same tooth from the previous revolution of the target. The programmable threshold update results in improved output switching accuracy on targets with runout and tooth-to-tooth variation (including narrow valleys). With the four-tooth update option, during the first target rotation the device behaves the same as in singletooth update while one rotation of target information is stored to memory. Similarly, if a direction change or other sudden magnetic signal change is detected, the device returns to single-tooth update mode and re-learns four target teeth before returning to four-tooth update mode. Switchpoints The running mode switchpoints in the ATS601LSG are established dynamically as a percentage of the amplitude of the signal, VPROC . There are two switchpoint ( BST ) choices, selectable with the U or M options. The ATS601LSG uses a single switch- ing threshold (operate and release point identical) with internal hysteresis. The internal running mode hysteresis ( BHYS(rm) ) allows for high performance switching accuracy on both rising and falling edges while maintaining immunity to false switching on noise, vibration, backlash, or other transient events. Figure 7 demonstrates the function of this hysteresis when switching on an anomalous peak. Power Supply Protection The ATS601LSG contains an on-chip regulator and can operate over a wide range of supply voltage levels. For applications using an unregulated power supply, transient protection may be added externally. For applications using a regulated supply line, EMI and RFI protection may still be required. Contact Allegro for information on EMC specification compliance. When the supply voltage falls below the undervoltage lockout level, VCC(UV)fall , the device switches to the Off (VOUT = high) state. The device remains in that state until the voltage level is restored to the VCC operating range. Changes in the target magnetic profile have no effect until voltage is restored. This prevents false signals caused by undervoltage conditions from propagating to the output of the sensor IC. VPROC(high) BST VPROC (%) +BHYS(int) Switchpoint Level –BHYS(int) VPROC(low) On Off On Off Time Output State for POL Bit = 0 Figure 7. Switching on internal hysteresis Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 10 ATS601 Single Element, Tooth Detecting Speed Sensor IC Operating Modes Startup Hysteresis Mode After power-on, a minimum amount of peak-to-peak magnetic movement is required before the ATS601 will begin generating output edges. This required signal movement threshold is referred to as the startup hysteresis. There are two programmable options for this startup hysteresis threshold. With narrow (N option) startup hysteresis, the device will switch to a farther air gap, but will have reduced immunity to magnetic overshoot, thus limiting its close air gap capability. With wide (W option) startup hysteresis, the device will have a reduced maximum air gap capability, but improved magnetic overshoot immunity. After the magnetic signal exceeds the startup hysteresis value for the first time, the device will transition to Calibration mode. Calibration Mode In Calibration mode, the ATS601 uses threshold based switching with continuous update. This ensures that all teeth and valleys are captured correctly, but provides slightly reduced accuracy relative to Running mode. The device stays in Calibration mode long enough to correctly capture enough peaks to fill the Running mode threshold memory. This corresponds to three output edges with the single-tooth update (1 option) and nine edges with the four-tooth update (4 option). After Calibration mode is complete, the device transitions to Running mode. Running Mode In Running mode the ATS601 uses threshold based switching with internal hysteresis described previously, in the Threshold Update and Switchpoints sections. The threshold update is intended to optimize output switching accuracy when used with common camshaft targets, including cases with runout and narrow target valleys. Stop Mode The ATS601 has an internal timer that begins counting on each output edge. If the timer reaches tSM before another output edge occurs, the device moves into Stop mode. Stop mode is the same as Startup Hysteresis mode, but with a hysteresis value determined as a percentage of the previously measured target amplitude. Stop mode ensures no missed or extra output edges, even during situations with large temperature drifts and no target rotation. Watchdog The ATS601 has a peak detector continuously tracking the magnetic signal. If a sudden large signal change causes the sensor IC output to stop switching but the peak detector continues to detect valid signal movement, the watchdog will be fired. In case of a watchdog event, the sensor IC performs a self-reset and returns to the initial Startup Hysteresis mode to regain output switching. Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 11 ATS601 Single Element, Tooth Detecting Speed Sensor IC Power Derating Power Derating The device must be operated below the maximum junction temperature of the device, TJ(max). Under certain combinations of peak conditions, reliable operation may require derating supplied power or improving the heat dissipation properties of the application. This section presents a procedure for correlating factors affecting operating TJ. (Thermal data is also available on the Allegro MicroSystems website.) The Package Thermal Resistance, RJA, is a figure of merit summarizing the ability of the application and the device to dissipate heat from the junction (die), through all paths to the ambient air. Its primary component is the Effective Thermal Conductivity, K, of the printed circuit board, including adjacent devices and traces. Radiation from the die through the device case, RJC, is a relatively small component of RJA. Ambient air temperature, TA, and air motion are significant external factors, damped by overmolding. The effect of varying power levels (Power Dissipation, PD), can be estimated. The following formulas represent the fundamental relationships used to estimate TJ, at PD. PD = VIN × IIN T = PD × RJA TJ = TA + ΔT (1) (2) Example: Reliability for VCC at TA = 150°C, package SG, using single layer PCB. Observe the worst-case ratings for the device, specifically: RJA = 126°C/W, TJ(max) = 165°C, VCC(absmax) = 24 V, and ICC = 10 mA. Calculate the maximum allowable power level, PD(max). First, invert equation 3: T(max) = TJ(max) – TA = 165 °C – 150 °C = 15 °C This provides the allowable increase to TJ resulting from internal power dissipation. Then, invert equation 2: PD(max) = T(max) ÷ RJA = 15°C ÷ 126 °C/W = 119 mW Finally, invert equation 1 with respect to voltage: VCC(est) = PD(max) ÷ ICC = 119 mW ÷ 10 mA = 11.9 V The result indicates that, at TA, the application and device can dissipate adequate amounts of heat at voltages ≤VCC(est). Compare VCC(est) to VCC(max). If VCC(est) ≤ VCC(max), then reliable operation between VCC(est) and VCC(max) requires enhanced RJA. If VCC(est) ≥ VCC(max), then operation between VCC(est) and VCC(max) is reliable under these conditions. (3) For example, given common conditions such as: TA= 25°C, VCC = 12 V, ICC = 7 mA, and RJA = 126 °C/W, then: PD = VCC × ICC = 12 V × 7 mA = 84 mW T = PD × RJA = 84 mW × 126 °C/W = 10.6°C TJ = TA + T = 25°C + 10.6°C = 35.6°C A worst-case estimate, PD(max), represents the maximum allowable power level (VCC(max), ICC(max)), without exceeding TJ(max), at a selected RJA and TA. Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 12 ATS601 Single Element, Tooth Detecting Speed Sensor IC Package SG, 4-Pin SIP 5.50±0.05 E B 8.00±0.05 LLLLLLL NNN 5.80±0.05 YYWW Branded Face F 1.70±0.10 D 4.70±0.10 1 2 3 4 = Supplier emblem L = Lot identifier N = Last three numbers of device part number Y = Last two digits of year of manufacture W = Week of manufacture A 0.60±0.10 Standard Branding Reference View 0.71±0.05 For Reference Only, not for tooling use (reference DWG-9002) Dimensions in millimeters A Dambar removal protrusion (16X) +0.06 0.38 –0.04 B Metallic protrusion, electrically connected to pin 4 and substrate (both sides) C Thermoplastic Molded Lead Bar for alignment during shipment 24.65±0.10 D Branding scale and appearance at supplier discretion 0.40±0.10 15.30±0.10 E Active Area Depth, 0.43 mm F Hall element, not to scale 1.0 REF A 1.60±0.10 C 1.27±0.10 0.71±0.10 0.71±0.10 5.50±0.10 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 13 ATS601 Single Element, Tooth Detecting Speed Sensor IC Copyright ©2013, Allegro MicroSystems, LLC Allegro MicroSystems, LLC 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’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. For the latest version of this document, visit our website: www.allegromicro.com Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615–0036 U.S.A. 1.508.853.5000; www.allegromicro.com 14