ATS612LSB

ATS612LSB Datasheet

ATS612LSB Dynamic, Self-Calibrating, Peak-Detecting, Differential Hall Effect Gear Tooth Sensor IC

Part	Datasheet
ATS612LSB	ATS612LSB (pdf)

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ATS612LSB Dynamic, Self-Calibrating, Peak-Detecting, Differential Hall Effect Gear Tooth Sensor IC Discontinued Product These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. Date of status change April 28, 2007 Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the ATS617LSG. NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Data Sheet b ATS612LSB DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR IC Pin 1 = Supply Pin 2 = Output Pin 3 = Capacitor Pin 4 = Ground Dwg. AH-006 ABSOLUTE MAXIMUM RATINGS over operating temperature range PD See Graph Operating Temperature Range, TA -40°C to +150°C* Storage Temperature, TS +170°C * Operation at increased supply voltages with external circuitry is described in Applications Information. Devices for operation at increased temperatures are available on special order. † Output is current limited at 25 mA to 55 mA. Continued operation in this mode can cause excessive device heating and failure. See graph, next page. The ATS612LSB gear-tooth sensor IC is a peak detecting device that uses automatic gain control to provide extremely accurate gear edge detection down to low operating speeds. Each package consists of a high-temperature plastic shell that holds together a samariumcobalt pellet, a pole piece, and a differential open-collector Hall IC that has been optimized to the magnetic circuit. This small package can be easily assembled and used in conjunction with a wide variety of gear shapes and sizes. The technology used for this device is Hall-effect based. The device incorporates a dual-element Hall IC that switches in response to differential magnetic signals created by ferrous targets. The sophisticated processing circuitry contains a 5-bit A/D converter that self-calibrates normalizes the internal gain of the device to minimize the effect of air-gap variations. The patented peak-detecting filter circuit eliminates magnet and system offsets and has the ability to discriminate relatively fast changes such as those caused by tilt, gear wobble, and eccentricities yet provides stable operation to extremely low RPM. These devices are ideal for use in gathering speed, position, and timing information using gear-tooth-based configurations. The ATS612LSB is particularly suited to those applications that require extremely accurate duty cycle control or accurate edge detection such as in automotive crank shaft applications. The lower vibration sensitivity also makes this device extremely useful for transmission speed sensing applications. ATS612LSB Large/small-tooth gear-position sensing crank angle, transmission speed, cam angle. continued next Always order by complete part number ATS612LSB ATS612LSB DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR IC 1000 ALLOWABLE PACKAGE POWER DISSIPATION IN mW • Fully Optimized Differential Digital Gear-Tooth Sensor IC • Single-Chip Sensing IC for High Reliability • Digital Output Representing Target Profile • Extremely Low Timing Accuracy Drift with Temperature • Large Operating Air Gaps = 150°C/W • Small Mechanical Size • Optimized Magnetic Circuit • Patented Peak-Detecting Filter 80 µs Typical Power-On Time <10 RPM Operation single-tooth target Correct First-Edge Detection Uses Small Value Ceramic Capacitors • Under-Voltage Lockout • Wide Operating Voltage Range 100 120 140 160 180 AMBIENT TEMPERATURE IN °C

PDF Datasheet Preview

ATS612LSB Dynamic, Self-Calibrating, Peak-Detecting, Differential Hall Effect Gear Tooth Sensor IC

Discontinued Product

These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available.

Date of status change April 28, 2007

Recommended Substitutions:

For existing customer transition, and for new customers or new applications, refer to the ATS617LSG.

NOTE For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.

Data Sheet b

ATS612LSB

DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR IC

Pin 1 = Supply Pin 2 = Output Pin 3 = Capacitor Pin 4 = Ground

Dwg. AH-006

ABSOLUTE MAXIMUM RATINGS
over operating temperature range

PD See Graph Operating Temperature Range,

TA -40°C to +150°C* Storage Temperature, TS +170°C
* Operation at increased supply voltages with external circuitry is described in Applications Information. Devices for operation at increased temperatures are available on special order.
† Output is current limited at 25 mA to 55 mA. Continued operation in this mode can cause excessive device heating and failure. See graph, next page.

The ATS612LSB gear-tooth sensor IC is a peak detecting device that uses automatic gain control to provide extremely accurate gear edge detection down to low operating speeds. Each package consists of a high-temperature plastic shell that holds together a samariumcobalt pellet, a pole piece, and a differential open-collector Hall IC that has been optimized to the magnetic circuit. This small package can be easily assembled and used in conjunction with a wide variety of gear shapes and sizes.

The technology used for this device is Hall-effect based. The device incorporates a dual-element Hall IC that switches in response to differential magnetic signals created by ferrous targets. The sophisticated processing circuitry contains a 5-bit A/D converter that self-calibrates normalizes the internal gain of the device to minimize the effect of air-gap variations. The patented peak-detecting filter circuit eliminates magnet and system offsets and has the ability to discriminate relatively fast changes such as those caused by tilt, gear wobble, and eccentricities yet provides stable operation to extremely low RPM.

These devices are ideal for use in gathering speed, position, and timing information using gear-tooth-based configurations. The ATS612LSB is particularly suited to those applications that require extremely accurate duty cycle control or accurate edge detection such as in automotive crank shaft applications. The lower vibration sensitivity also makes this device extremely useful for transmission speed sensing applications.

ATS612LSB Large/small-tooth gear-position sensing crank angle, transmission speed, cam angle.
continued next

Always order by complete part number ATS612LSB

ATS612LSB

DYNAMIC, SELF-CALIBRATING, PEAK-DETECTING, DIFFERENTIAL HALL-EFFECT GEAR-TOOTH SENSOR IC
1000

ALLOWABLE PACKAGE POWER DISSIPATION IN mW
• Fully Optimized Differential Digital Gear-Tooth Sensor IC
• Single-Chip Sensing IC for High Reliability
• Digital Output Representing Target Profile
• Extremely Low Timing Accuracy Drift with Temperature
• Large Operating Air Gaps
= 150°C/W
• Small Mechanical Size
• Optimized Magnetic Circuit
• Patented Peak-Detecting Filter 80 µs Typical Power-On Time <10 RPM Operation single-tooth target Correct First-Edge Detection Uses Small Value Ceramic Capacitors
• Under-Voltage Lockout
• Wide Operating Voltage Range
100 120 140 160 180

AMBIENT TEMPERATURE IN °C

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Datasheet ID: ATS612LSB 516125