Overview：High-precision signal isolators for domestic substitution, developed and produced by SunYuan Technology ：The ISOC124P is widely used in industrial control, power monitoring, and medical equipment, with its core function being to address signal interference and ground potential differences.It achieves high-precision signal transmission through capacitive isolation technology, Ensuring data reliability and system security in complex electromagnetic environments, providing core support for industrial automation, significantly enhancing equipment maintenance efficiency and operational stability. ISOC 124P is simple and easy to use, featuring a fixed unity gain configuration with support for ±10V input and output. It is suitable for upgrading devices such as flow meters and pressure transmitters. The module supports an ultra-wide power supply range from ±4.5V to ±18V, delivering analog signal isolation amplification with exceptional precision and linearity across the entire measurement range. It achieves a maximum nonlinearity of 0.05% and a small-signal bandwidth of 50kHz (-3dB). The product features IC module packaging and DIN 35 standard rail-mounted packaging,It meets the demands of industrial-grade field environments characterized by humidity, vibration, and a wide temperature range of -40 to +85°C，It widly application in rail voltage monitoring, generator or motor safety operation monitoring, remote monitoring of power transmission and distribution, instrumentation and sensor signal transmission and reception, medical equipment safety isolation barriers, industrial robot automation control, AI server systems, chemical and nuclear power equipment, and other fields

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一、Core Application Scenarios

The ISOC124P high-precision signal isolator employs capacitive isolation technology to achieve high-accuracy transmission of ±10V input signals in industrial automation. It is suitable for the following critical scenarios:

1. Industrial Process Control：

Sensor Isolation：

2. Power System Monitoring：

For generators and power transmission and distribution equipment, it blocks electromagnetic interference during long-distance transmission, ensures stable transmission of voltage and current signals, and supports real-time fault diagnosis.

 Medical Device Safety

As a safety isolation barrier, it prevents electrical coupling between devices, ensuring the reliable operation of patient monitors and other equipment in high-voltage environments.

 Chemical and Explosion-Proof Zones

In flammable and explosive environments, isolators restrict energy transfer to prevent sparks from triggering explosions while eliminating ground loop interference, thereby enhancing process control safety.

5. Motor and SCR Control

For motor drives and thyristor (SCR) control circuits, providing electrical isolation to protect control terminals from high-voltage interference.

6.Power Supply Monitoring

Monitoring parameters such as voltage and current in power systems, ensuring measurement accuracy and safety through isolated amplification.

7.PC Data Acquisition

In the data acquisition system, isolated analog signal inputs prevent noise interference and enhance data accuracy.

8. Testing Equipment

Designed for high-precision test instruments such as oscilloscopes and signal generators, it provides stable signal isolation and amplification. 

Core Technology Advantages

High precision and high bandwidth

Nonlinearity is only 0.01%, achieving five times the accuracy of traditional opto-isolated amplifiers. Achieves exceptional linearity across the entire measurement range, ensuring signal transmission accuracy and preventing training errors caused by signal distortion. 50kHz (-3dB) high bandwidth：Supports high-frequency signal processing, suitable for high-speed data acquisition scenarios.With its 50kHz high bandwidth and 0.01% nonlinearity, it can precisely capture nanosecond-level load changes, preventing system downtime caused by signal distortion. 

Highly resistant to interference

Capacitive isolation technology employs digital modulation-demodulation techniques to transmit signals in digital form through a capacitive isolation layer. This approach enhances EMC immunity by 50% compared to traditional magnetic/optical coupling isolation methods and delivers superior resistance to high-frequency transients. Isolation voltage up to 3000V effectively blocks electromagnetic interference and high-voltage spikes within the server (such as power supply module surges) from ground loop interference, protecting low-voltage control circuits and meeting industrial-grade safety standards.

Wide temperature range operation

Supports operating temperatures from -40°C to +85°C, making it suitable for industrial environments. Ensures long-term stable operation in demanding conditions such as edge computing nodes and outdoor equipment rooms.

Highly compatible

Pin-Pin compatible with ISO 124P, enabling direct replacement without PCB redesign, reducing upgrade and replacement costs, and supporting multiple generations of hardware platforms.

Compact size

DIP16-pin flame-retardant package, compact dimensions of 22.8×10.2×8.5mm: Saves PCB space, ideal for high-density server installation requirements.

Long life

Capacitive isolation technology extends service life and reduces the frequency of industrial equipment replacement.

Wide-range power supply

±4.5V to ±18V wide power supply range: Supports independent positive and negative power supply for input and output

三、Summary

The ISOC124 integrated module, leveraging its technological advantages, has become a core component for signal isolation in modern automation systems, providing robust assurance for industrial safety and precision requirements.