AMC1302-Q1

The AMC1302-Q1 is a high-precision, isolated analog signal conditioner from Texas Instruments designed for accurate voltage sensing in harsh industrial and automotive environments. It features a wide input voltage range of ±25 V, enabling it to interface directly with various power systems without requiring external signal conditioning. The device offers a 300 kV/μs common-mode transient immunity, ensuring reliable operation even under severe electromagnetic interference (EMI) conditions typical in motor drives, power supplies, and inverters. This isolator utilizes a proprietary silicon-oxide isolation technology that provides up to 3.75 kVRMS of galvanic isolation, meeting stringent safety standards such as UL 1577 and IEC 60747-17. Its low propagation delay of less than 1 μs and high bandwidth of up to 500 kHz make it ideal for real-time monitoring and feedback control applications where timing accuracy is critical. The AMC1302-Q1 also boasts excellent linearity, with a maximum non-linearity error of ±0.1%, which ensures precise measurement across the full input range. Designed for robustness in demanding applications, the AMC1302-Q1 operates over an extended temperature range from –40°C to +125°C, making it suitable for use in automotive, industrial automation, and renewable energy systems. It supports both single-supply and dual-supply operation, offering flexibility in system design. The device includes built-in diagnostics such as fault detection and open-loop protection, enhancing system reliability and reducing maintenance needs. In terms of functionality, the AMC1302-Q1 converts analog input signals into a high-frequency pulse-width modulated (PWM) output, which can be easily filtered and processed by microcontrollers or digital signal processors (DSPs). This architecture simplifies integration with existing control systems while minimizing noise susceptibility due to the inherent noise immunity of the PWM signal. Additionally, the device features a low-power consumption mode, contributing to energy-efficient designs in battery-powered or portable equipment. Common applications include current sensing in electric vehicle (EV) battery management systems, isolated voltage measurement in solar inverters, and precision monitoring in industrial motor drives. Its ability to maintain signal integrity across isolation barriers makes it particularly valuable in systems where ground potential differences must be managed safely and accurately. The AMC1302-Q1’s combination of performance, safety compliance, and ease of integration positions it as a preferred solution for next-generation power electronics and smart instrumentation.