Worcester, Mass. Allegro MicroSystems, Inc. has made two key improvements to its popular line of continuous-time linear sensors with the introduction of its new A1301 and A1302 devices. These enhancements include a quiescent output voltage that is 50% of the supply voltage, and output sensitivity options of 1.3 mV per gauss (G) and 2.5 mV/G. This makes the new devices suitable for use in linear and rotary position sensing systems over the extended temperature range of -40°C and 125°C. Target applications include automotive, industrial and consumer markets.
The A1301 is the most sensitive device with a target of 2.5 mV/G while the A1302 is a 100% drop-in replacement for the A3503 with a sensitivity target of 1.3 mV/G. Factory programming after packaging enables the A1301/02 family of linears to outperform comparable devices by providing tighter quiescent output voltage and sensitivity distributions at room temperature, said the company.
Each Hall-effect integrated circuit includes a Hall sensing element, linear amplifier, and a CMOS class A output structure. The Hall element in combination with an amplifier on a single chip is said to minimize many problems typically associated with low-level analog signals. Output precision is obtained by internal gain and offset trim adjustments made at end-of-line during the manufacturing process.
The new devices are available in a three-pin, ultra-mini single inline package (UA suffix); a three-pin, mini single inline package (U suffix); a three-pin, surface-mount SOT23-style package (LH suffix), and a surface-mount SOT89/TO-243AA (suffix LT) transistor package.
These devices are priced at $0.34 in quantities of 100,000 or greater. Delivery for the LH and UA packages is ten weeks. The U and LT packages are available in 14 weeks.
Call (508) 853-9000