Ablic launches a new series of automotive shunt reference ICs, the S-19760/1, with output voltage accuracy of ±0.1% and output voltage temperature coefficient of ±20ppm/℃. The ICs are primarily used as a reference voltage for A/D converters, which convert analogue sensor signals into digital values.
Its capabilities enables highly precise reference voltage output even in severe temperature environments, thus further improving sensor readout accuracy. Also, with its integrated filter circuit, these devices feature an ultra-low output noise of just 28µVrms, thus minimising measurement errors in A/D converters during the conversion of sensor signals into digital values.
The S-19761 Series also features a maximum shunt current of 30mA, allowing a single shunt reference IC to be used as the reference voltage for multiple circuits, thereby reducing the number of components, saving space, and contributing to cost reduction.
In addition to the standard SOT-23-3 (2.8 x 2.9 x t1.3 mm) package, the line-up also includes the ultra-small/thin HSNT-8(1616)B (1.6 x 1.6 x 0.41 mm) package, enabling space-saving mounting.
Vehicles are equipped with various sensors that precisely monitor the constantly changing vehicle conditions. For example, in EV/HEV inverters, sensors monitor current, voltage, and motor angle to enable precise motor control. When these sensor signals are processed by an A/D converter, a highly precise reference voltage is essential to ensure precise digital conversion. By using the S-19760/1 Series, featuring industry-leading output voltage accuracy and temperature coefficient, as a reference voltage, users can ensure high-precision inverter monitoring and control even in harsh environments, thereby supporting enhanced vehicle safety. Moreover, as the number of sensors installed in vehicles continues to increase, this product contributes to component miniaturization and reduced component count.
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