ISO 4-In/4-Out 3kVDC Analog Signal Isolation Amplifier IC

SunYuan's proprietary ISO U/A-U/A-U/A-U/A-P-O series 4-input&4-output analog signal isolation amplifier, featuring unique five-isolation technology, is the industry's first hybrid integrated module combining capacitive-coupled isolation amplification and conversion transmission. It delivers robust resistance to EMC interference.The product employs SunYuan Technology's innovative modulated-demodulated capacitive coupling isolation technology. Analog signals from instruments and sensors undergo analog-to-digital modulation before being transmitted as digital signals through a capacitive isolation layer. These signals are then restored to analog form via a digital-to-analog conversion circuit for output. Digital modulation and capacitive coupling isolation preserve signal integrity, while the capacitive isolation layer delivers outstanding reliability and superior high-frequency transient immunity. This product is specifically designed for industrial applications requiring EMC spatial interference electromagnetic compatibility characteristics, along with high-precision, high-security four-channel analog signal isolation amplification conversion and distribution. It employs 3000VDC high-isolation technology with wide creepage distances internally, achieving complete electrical isolation between the input, output, and operating power supply of each signal channel.This product is designed to eliminate ground loop interference, suppress common-mode noise, and isolate high-voltage surges in harsh environments, ensuring reliable signal transmission and safe equipment operation. It serves as an ideal solution for addressing EMC (electromagnetic compatibility) challenges and signal crosstalk between multiple channels in industrial automation, instrumentation, and smart sensor/transmitter applications.

The ISO U/A-U/A-U/A-P-O Series Analog Signal Isolation Amplifier is an electronic integrated module capable of simultaneously providing electrical isolation, amplification, and conversion for four signal channels，It employs a compact standard SIP 16-pin (single in-line package) flame-retardant housing with resin encapsulation. Internally integrated are a multi-channel isolated DC/DC conversion circuit powered by a single supply and multiple capacitively coupled signal isolation circuits. It supports single-ended input/output for analog signals, as well as isolated transmission with positive-to-positive and negative-to-negative input/output configurations. The entire unit requires no external potentiometers or other electronic components, eliminating the need for zero and gain adjustments. This significantly simplifies system design and reduces on-site usage costs for users. The analog signal transmission within the product employs capacitive coupling isolation technology. Compared to magnetic-electrical isolation, it offers superior resistance to EMC interference. Compared to optoelectronic isolation technology, it provides better temperature drift characteristics and linearity, while eliminating the cumbersome task of repeatedly calibrating zero and full-scale points during operation. The auxiliary power supply employs a single-source configuration with 3kVDC isolation between the power supply and signal input channels. This design enables users to power multiple modules simultaneously using either a single or multiple power supplies, effectively reducing both the design complexity and physical footprint of the control system.

The ISO U/A-U/A- U/A-U/A-P-O series modules are simple and easy to use. offering two installation methods: PCB board soldering for module encapsulation and standard DIN 35 rail slot mounting. Both methods enable isolation distribution and amplification conversion of analog signals from various industrial field sensors, transmitters, and instruments or control systems, such as 4-input/4-output configurations. They meet industrial-grade environmental requirements for humidity, vibration, and wide temperature ranges (-40 to +85°C). This product is specifically designed for complex industrial field environments, effectively eliminating ground loop interference, isolating high-voltage surges, converting signal types, and enabling long-distance signal amplification with distortion-free transmission. It finds extensive application in rail voltage monitoring, generator or motor safety operation monitoring, remote power transmission and distribution monitoring, instrumentation and sensor signal transmission, medical equipment and new energy systems, industrial robot automation control, chemical processing, and nuclear power equipment.