Allegro Manuals

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.

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.

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.

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.

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.

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

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

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

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

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.

The UDK/UDN/UDQ2547B and UDK/UDN/UDQ2547EB quad power drivers combine logic gates and high-current bipolar outputs with complete output protection, providing interface between low-level logic and power loads.

The ATS673 and ATS674 are high performance Hall sensors. They have compact dimensions, low power consumption, high immunity and high accuracy. These devices are specifically designed for automotive applications and are able to withstand the effects of radiated and conducted transients.

The 3121, 3122, and 3123 are monolithic integrated circuits with tighter magnetic specifications, designed to operate continuously over extended temperatures to +150°C, and are more stable with both tem- perature and supply voltage changes.

The UDN2993B and UDN2993LB are dual full-bridge motion control ICs that provide cost-effective, monolithic drive electronics for bipolar stepper and dc (brush) servo motors to 30 V and 500 mA.

This data sheet provides information on the maximum operating voltage, output current, logic supply voltage, logic/reference input voltage range, load supply voltage, package power dissipation, operating temperature range, junction temperature range and storage temperature range of A3955SB and A3955SLB.