New angle sensor ICs support either analogue or PWM output signals

Allegro MicroSystems has introduced new 0-degree to 360-degree angle sensor ICs providing contactless high-resolution angular position information based on magnetic CVH technology. The company's A1330 devices combine a SoC architecture including a CVH front end, digital signal processing, and either an analogue or digital PWM output signal. The devices are offered in both single and dual die versions for systems that need redundant sensors. They also incorporate on-chip EEPROM technology, capable of supporting up to 100 read/write cycles, for flexible end-of-line programming of calibration parameters. Both ICs are ideal for automotive applications that require 0-degree to 360-degree angle measurements, such as motor position measurements for pumps and other actuators, requiring low latency and high resolution. The devices also include on-chip scaling to support “short stroke” applications with as little as 11.25-degree of motion, like valve position, pedal position, and fuel tank level sensing. The stacked die nature of the dual die assembly provides greater channel to channel matching than more traditional side by side assembly techniques. This is a key parameter for safety-critical applications where the output of the two sensors is compared to ensure that the system is operating safely. Both the single and dual die versions of the devices are offered in a low profile, (Pb) free, 100% matt-tin lead frame plated eight-pin TSSOP package.