ALLEGRO Manuals

The A3240 Hall-effect switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended tem per a ture ranges to +150°C.

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A3240 is a Hall-effect switch that can work at high temperature.

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The A3240 Hall-effect switch is a high-temperature sensor that features temperature stability and resistance to stress, and can operate over extended temperature ranges up to +150°C.

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The A3213xx and A3214xx integrated circuits are ultra-sensitive, polarity 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. A 2.4 volt to 5.5 volt operation and a unique clocking scheme reduce the average operating power requirements - the A3213xx to 825 microwatts, the A3214xx to 14 microwatts (typical at 2.75 V)! Except for operating duty cycle and average operating current, the A3213xx and A3214xx 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.

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The A3212 is a Schottky barrier Hall-effect switch consisting of a Schottky barrier, a drive amplifier, a decoder, an oscillator, a latch, and is used to measure the strength of the magnetic field.

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a3212 is an ultra-sensitive hall effect switch with a latched digital output, suitable for use in battery-operated, handheld equipment such as cellular and cordless telephones, pagers, and palmtop computers.

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The A3211 and A3212 integrated circuits are ultra-sensitive, pole indepen- dent Hall-effect switches with latched digital output. These sensors are es- pecially suited for operation in battery-operated, hand-held equipment such as cellular and cordless tele- phones, pagers, and palmtop comput- ers. A 2.5 volt to 3.5 volt operation and a unique clocking scheme reduce the average op- erating power requirements to less than 15 μW with a 2.75 volt supply. Unlike other Hall-effect switches, either a north or south pole of suf- ficient strength will turn the output on in the A3212, and in the absence of a magnetic field, the output is off. The A3211 provides an inverted output. The po- larity inde- pendence and minimal power requirements allow these devices to easily replace reed switches for superior reliability and ease of manufacturing, while eliminat- ing 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 depen- dencies, and thermal stress. This device includes on a single silicon chip a Hall-voltage generator, small-sig- nal amplifier, chopper sta- bilization, a latch, and a MOSFET output. Ad vanced BiCMOS processing is used to take advantage of low-voltage and low-power requirements, component matching, very low input-offset errors, and small com- ponent geometries. Four package styles provid- ed offer different sizes and cost.

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The A3211 and A3212 integrated circuits are ultra-sensitive, pole independent Hall-effect switches with latched digital output. These sensors are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers. They operate at a voltage range of 2.5V to 3.5V, and a unique clocking scheme reduces the average operating power requirement to less than 15μW with a 2.75V supply. The A3212 can be turned on by either a north or south pole of sufficient strength, while the output is off in the absence of a magnetic field. The A3211 provides an inverted output. These devices can easily replace reed switches for superior reliability and ease of manufacturing, eliminating the need for signal conditioning. Improved stability is achieved through chopper stabilization, reducing residual offset voltage caused by overmolding, temperature dependencies, and thermal stress. The devices integrate a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output on a single silicon chip using advanced BiCMOS processing, providing low-voltage and low-power operation, component matching, very low input-offset errors, and small component geometries.

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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 available in DIP-8 or SMD-8 packages.

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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. The devices operate at 2.5 to 3.5 volts and have a unique clocking scheme that reduces the average operating power requirements to 400 µW for the A3209Ex and 25 µW for the A3210Ex. Unlike other Hall-effect switches, these devices can be triggered by either a north or south pole of sufficient strength, and the output is off in the absence of a magnetic field. The polarity independence and low power requirement make these devices suitable replacements for reed switches, providing superior reliability and ease of manufacturing without the need for signal conditioning. The devices utilize chopper stabilization for improved stability, reducing the residual offset voltage caused by device overmolding, temperature dependencies, and thermal stress. They integrate a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output on a single silicon chip using advanced BiCMOS processing, which enables low-voltage and low-power operation, component matching, low input-offset errors, and small component geometries.

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The Sanken Power Devices 28210.05 SLA7075M, SLA7076M, SLA7077M, and SLA7078M Motor Drivers are a family of 2-phase stepper unipolar drivers. They feature a clock-in type input interface that allows simplified control logic, and options for built-in sense current detection and load circuit short or open protection (patent pending) provide lower loss and lower thermal resistance. All products in the SLA7070M series are pin-compatible, supporting rapid design of application variants. The built-in excitation distribution circuit (sequencer) allows motor control using only the CLOCK signal for simple operations (rotate/stop), with motor speed control by frequency input into CLOCK pin. This eliminates logic signal lines required for conventional phase-input methods, and reduces demand on heavily-used CPUs.

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Recommended for high-side switching applications that benefit from separate logic and load grounds, these devices encompass load supply voltages to 80 V and output currents to -500 mA. These 8-channel source drivers are useful for interfacing between low-level logic and high-current loads. Typical loads include relays, solenoids, lamps, stepper and/or servo motors, print hammers, and LEDs. All devices may be used with 5 V logic systems — TTL, Schottky TTL, DTL, and 5 V CMOS. The UDN2981A, UDN2982A, UDN2982LW, and A2982SLW are electrically interchangeable, will withstand a maximum output off voltage of 50 V, and operate to a minimum of 5 V; the UDN2983A, UDN2984A, UDN2984LW, and A2984SLW drivers are electrically inter- changeable, will withstand an output voltage of 80 V, and operate to a minimum of 35 V. All devices in this series integrate input current limiting resistors and output transient suppression diodes, and are activated by an active high input. The suffix ‘A’ (all devices) indicates an 18-lead plastic dual in-line package with copper lead frame for optimum power dissipation. Under normal operating conditions, these devices will sustain 120 mA continuously for each of the eight outputs at an ambient temperature of +50°C and a supply of 15 V. The suffix ‘LW’ (UDN2982LW and UDN2984LW only) indicates an 18- lead surface-mountable wide-body SOIC package; the A2982SLW and A2984SLW are provided in a 20-lead wide-body SOIC package with im- proved thermal characteristics.

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DABiC-IV is a 10-bit serial-input latched source driver primarily designed for driving vacuum-fluorescent displays. It features 60V and -40mA output ratings, and also has an increased data input rate and controlled output slew rate.

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This is a PDF document about Hall-effect latches, which mainly introduces its features and characteristics, including symmetrical response, 4.5V to 18V operating range, open-collector output, reverse battery protection, activation with small, commercially available permanent magnets, solid-state reliability, small size, superior temperature stability and resistance to physical stress.

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UCN5821A/LW, UCN5822A/LW are 8-bit serial-input, latched drivers with higher input speeds and stronger drive capability.

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The high-temperature Hall switches have temperature compensation function and are suitable for pulse counting applications in high temperature environment.

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ATS660LSB is a digital differential Hall-effect sensor that is ideal for high-precision and high-repeatability products

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A8450 is a multi-output power supply intended for automotive applications

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The A8906CLB is a bidirectional three-phase brushless dc motor controller/driver. The three half-bridge outputs are low on-resistance n-channel DMOS devices capable of driving up to 1 A. The A8906CLB provides complete, reliable, self-contained back-EMF sensing motor startup and running algorithms. A programmable digital frequency-locked loop speed control circuit together with the linear current control circuitry provides precise speed control. The device features low standby current, low voltage noise, low EMI and high reliability.

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