Allegro MicroSystems, Inc.

Sensors, Monitors & Transducers

Allegro Announces New Low Noise 2100vrms Hall-Effect Current Sensors

Worcester, MA, December 18, 2006 - Allegro introduces two new high performance low noise 2100Vrms isolation current sensors. Allegro's new current sensors, ACS712 (bidirectional) and ACS713 (unidirectional), provide lower noise and higher accuracy than previous generation current sensors. These sensors also include an integrated shield, which effectively attenuates high dV/dt transients across...

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Sensors, Monitors & Transducers

Miniature Hall-Effect Linear Sensors are user-programmable.

Offered in TO-92 or SOT-23W packages, A138xELHLT-T series features one-time programmable read-only memory that lets users optimize device in finished sensor assembly. Sensitivity may be finely adjusted around 4 predetermined nominal values of 2.5, 3.1, 5.0, or 7.0 mV/G through series of voltage pulses on output of either 3-lead package. Along with dynamic offset cancellation, features include...

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Microstepping Motor Driver features built-in translator.
Controls & Controllers

Microstepping Motor Driver features built-in translator.

With output drive capacity of up to 35 V and ±2 A, Model A4983 operates bipolar stepper motors in full, half, quarter, eighth, and sixteenth step modes. Chopping control selects slow or mixed decay mode, and synchronous rectification control circuitry provides power dissipation during PWM operation. A4983 is supplied in 5.0 x 5.0 x 0.9 mm QFN package with exposed thermal pad. Package is...

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Single Transistors are made for audio amplifiers.
Electronic Components & Devices

Single Transistors are made for audio amplifiers.

Designed for home and professional audio amplifiers, 2SA2151, 2SC2151A, 2SC6011, and 2SC6011A utilize thinner-die technology technique to promote power-up by minimizing thermal resistance and maximizing voltage avalanche breakdown rating. Power-handling capacity of TO-3P package (160 W) contributes to smaller space for circuit design. While suitable for multi-channel applications for AV...

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Switch Interface IC suits automotive sensing systems.
Electrical Equipment & Systems

Switch Interface IC suits automotive sensing systems.

Rated over wide operating voltage and temperature range, Model A6850 uses protected high-side low resistance DMOS MOSFETs to switch supply voltage to Hall-effect devices. Dual channel switch interface IC eliminates need for comparator and external sense resistor by incorporating integrated current mirror. Unit offers two channels integrated on single IC, current clamping, thermal protection, and...

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Voltage Regulators are designed for satellite STBs.
Controls & Controllers

Voltage Regulators are designed for satellite STBs.

Supplied in 5 x 5 mm QFN/MLP-28 packages, A8290/A8291 single LNB supply control voltage regulators and A8286/A8292 dual LNB supply voltage regulators provide power interface signals to LNB downconverter via coaxial cable. Each low-noise block converter regulator (LNBR) has boost switch to minimize switching and static loss. While integrating FETs and sense resistors, monolithic linear/switching...

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DMOS Motor Driver controls one bipolar stepper and DC motor.
Controls & Controllers

DMOS Motor Driver controls one bipolar stepper and DC motor.

Supplied in Pb-free, 6 x 6 x 0.90 mm package with exposed power tab, A3989 can drive one bipolar stepper motor at up to 1.2 A and one dc motor at up to 2.4 A. Product is capable of drive voltages up to 36 V and features fixed off-time current regulator for each of its 3 full-bridges, which operate in either mixed decay mode or fast/slow decay mode. Internal synchronous rectification control...

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DMOS Motor Driver suits applications with two DC motors.
Controls & Controllers

DMOS Motor Driver suits applications with two DC motors.

Supplied in Pb-free, 6 x 6 x 0.90 mm package, A3995 DMOS full-bridge PWM motor driver controls 2 dc motors at currents up to 2.4 A. It can drive voltages to 36 V and has 2 independent fixed off-time PWM current regulators that operate in fast or slow decay mode. Internal synchronous rectification control circuitry promotes power dissipation, and PHASE, ENABLE, and MODE inputs are provided for...

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