The automotive voltage reference landscape has witnessed a revolutionary advancement with ABLIC’s introduction of the S-19760/1 Series. This cutting-edge semiconductor solution represents a significant leap forward in high-precision sensing technology, specifically engineered to meet the demanding requirements of modern automotive applications. As vehicles become increasingly sophisticated with advanced driver assistance systems (ADAS), electric powertrains, and complex sensor networks, the need for ultra-precise voltage references has never been more critical.
Unprecedented Accuracy in Harsh Automotive Environments
The S-19760/1 Series distinguishes itself through industry-leading specifications that set new benchmarks for automotive-grade components. Achieving an exceptional output voltage accuracy of ±0.1%, this automotive voltage reference ensures that sensor readings maintain their precision even under the most challenging operating conditions. The temperature coefficient of just 20ppm/°C (for A-type variants across the full -40°C to +125°C range) represents the lowest in the industry as of 2026, according to ABLIC’s research.
This remarkable temperature stability is particularly crucial for automotive applications where components must operate reliably in environments ranging from freezing winter conditions to the intense heat generated within engine compartments. When deployed as a reference voltage for analog-to-digital (A/D) converters, the S-19760/1 Series directly contributes to enhanced accuracy in critical sensor measurements, including temperature monitoring, pressure sensing, and current detection systems.
Low Noise Performance for Enhanced Signal Integrity
Noise reduction stands as a cornerstone feature of the S-19760/1 Series, with an impressively low output noise specification of 28μVRMS at 2.048V output. This characteristic proves invaluable in automotive systems where electromagnetic interference (EMI) from ignition systems, motors, and switching power supplies can compromise measurement accuracy. The low noise performance minimizes measurement errors in A/D converters that process sensor signals, ensuring that digital representations of analog sensor data remain true to the original physical phenomena being measured.
Beyond improved accuracy, the low noise characteristics enable significant design simplifications. Engineers can reduce or eliminate external filter circuits that would otherwise be necessary to clean up reference voltage signals. This reduction in external components translates directly into cost savings, reduced board space requirements, and simplified bill of materials (BOM) management—critical advantages in the highly competitive automotive electronics market.
High Output Current Capability for Multi-Circuit Applications
The S-19761 variant extends the series’ capabilities with a maximum shunt current of 30mA (25mA for 2.048V output), addressing a common challenge in automotive system design. This high output current capability allows a single automotive voltage reference IC to serve multiple circuits simultaneously, eliminating the need for external buffer amplifiers or multiple reference ICs.
This consolidation offers multiple benefits: reduced component count lowers overall system cost, decreased board footprint enables more compact designs, and simplified power distribution improves system reliability. For automotive manufacturers facing constant pressure to reduce vehicle weight and complexity while improving functionality, these advantages prove significant.
Comprehensive Application Coverage
The versatility of the S-19760/1 Series makes it suitable for an extensive range of automotive applications. Primary use cases include:
Battery Management Systems (BMS): In electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs), precise voltage references are essential for accurate cell voltage monitoring, state-of-charge calculations, and battery health assessment. The S-19760/1’s high accuracy directly impacts the safety and performance of these critical systems.
On-Board Chargers (OBC) and DC-DC Converters: Power conversion systems in electrified vehicles require precise voltage references for feedback control loops, ensuring efficient power transfer and maintaining output voltage regulation under varying load conditions.
Inverter Systems: Motor control inverters depend on accurate voltage references for current sensing and voltage monitoring, which are crucial for efficient motor operation and protection against fault conditions.
ADAS Domain Controllers: Advanced driver assistance systems, including automatic emergency braking, lane-keeping assist, and adaptive cruise control, rely on numerous sensors that require stable, precise reference voltains for accurate operation.
Traditional Automotive Systems: The series also serves conventional applications including engine control units (ECUs), transmission control systems, suspension control, and anti-lock braking systems (ABS), where reliability and precision remain paramount.
Technical Specifications and Quality Assurance
The S-19760/1 Series offers multiple output voltage options (2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V) to accommodate diverse design requirements. The S-19760 variant supports shunt currents from 80μA to 15mA, while the S-19761 extends this range to 30mA. Both variants operate across the full automotive temperature range of -40°C to +125°C and are available in compact SOT-23-3 packages, with HSNT-8(1616)B packages offered for B and C types.
Quality and reliability receive paramount importance in automotive applications. The S-19760/1 Series is undergoing AEC-Q100 qualification, the automotive industry’s standard stress test qualification for integrated circuits, and is PPAP (Production Part Approval Process) capable. These certifications ensure that the components meet the rigorous quality and reliability standards demanded by automotive OEMs and Tier 1 suppliers worldwide.
Design Considerations and Implementation
Successful implementation of the S-19760/1 Series requires attention to specific design parameters. The S-19760 requires an output capacitor of 0.22μF or higher, while the S-19761 needs 0.68μF or higher. These ceramic capacitors ensure stable operation and optimal noise performance. The built-in overcurrent protection circuit safeguards the output transistor, adding an additional layer of reliability to automotive systems.
Engineers selecting between the available accuracy grades should consider their specific application requirements. A-type devices offer the highest precision with ±0.1% accuracy at +25°C and ±20ppm/°C temperature coefficient across the full temperature range. B-type and C-type variants provide cost-effective alternatives for applications with less stringent accuracy requirements, with ±0.2% accuracy and temperature coefficients of ±30ppm/°C and ±80ppm/°C respectively.
The Future of Automotive Sensing
As the automotive industry continues its transformation toward electrification, autonomy, and connectivity, the demand for high-precision components like the S-19760/1 Series will only intensify. Modern vehicles incorporate hundreds of sensors monitoring everything from tire pressure to cabin air quality, from battery cell voltages to surrounding traffic conditions. Each of these sensors depends on stable, accurate reference voltages to deliver reliable data to vehicle control systems.
The S-19760/1 Series represents more than just an incremental improvement in voltage reference technology—it embodies the level of precision, reliability, and performance that next-generation automotive systems require. By combining industry-leading accuracy, ultra-low noise, high output current capability, and automotive-grade quality in a single solution, ABLIC has created a component that enables automotive designers to push the boundaries of what’s possible in vehicle sensing and control systems.
For automotive electronics manufacturers seeking to differentiate their products through superior performance and reliability, the S-19760/1 Series automotive voltage reference provides the foundation for building systems that meet the exacting standards of today’s automotive market while preparing for the even more demanding requirements of tomorrow’s intelligent, electrified vehicles.
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