ABLIC has launched the S-19760/1 Series, a range of automotive shunt reference integrated circuits (ICs) designed to deliver high-precision reference voltages for analogue-to-digital (A/D) converters in harsh vehicle environments. The series achieves an output voltage accuracy of ±0.1% and an output voltage temperature coefficient of ±20ppm/°C, which ABLIC claims are the best figures in the industry based on its own research.
The ICs are intended for use as reference voltages in A/D converters, which process sensor signals in applications including EV and hybrid electric vehicle (HEV) inverters, battery management systems (BMS), on-board chargers (OBCs), and DC-DC converters. An integrated filter circuit delivers output noise of 28µVrms at a 2.048V output, reducing measurement errors during signal conversion.
The S-19761 variant supports a maximum shunt current of 30mA, allowing a single IC to serve as the reference voltage for multiple circuits simultaneously. ABLIC says this reduces component count and supports space-saving designs. The series is available in two packages: the standard SOT-23-3 (2.8 x 2.9mm) and the ultra-small HSNT-8(1616)B (1.6 x 1.6 x 0.41mm).
The products are designed to meet AEC-Q100 automotive reliability standards, with Production Part Approval Process (PPAP) compliance forthcoming. Operating temperature range is -40°C to +125°C.
Source: ABLIC
