A1388 and A1389 Miniature Factory Programmable Lin

By Allegro MicroSystems, LLC 70

A1388 and A1389 Miniature Factory Programmable Lin

Allegro's A1388 and A1389 are factory one-time-programmable (OTP-ROM) linears that eliminate the need for customers to optimize/program the devices for their finished sensor assemblies. The A1388/89 builds on the flexibility and economic competitiveness of the A1381/2/3/4 devices.

The A1388 and A1389 architecturally have the ability to support a magnetic input sensitivity range of 2 to 4 mV/G, and 4 to 9 mV/G, respectively. However, the A1388/89 devices initially being released to market are factory programmed to specific magnetic input sensitivity levels via unique CASs for specific customer programming requirements.

  • Sensitivity temperature coefficient (TC) and QVO/QD temperature coefficient programmed at Allegro for improved accuracy
  • High-speed chopping scheme minimizes quiescent voltage output (QVO) drift across temperature
  • 5.0 V supply operation
  • Wide ambient temperature range: -40°C to +150°C
  • Operates with 4.5 V to 5.5 V supply voltage
  • Factory-programmed offset, sensitivity, and polarity
  • Temperature-stable QVO and sensitivity
  • Output voltage clamps provide short circuit diagnostic capabilities
  • Immune to mechanical stress
  • Enhanced EMC performance for stringent automotive applications