company blog about Recycle ADI Isolation Product:Data Isolators,Isolated ADCs,Isolated Gate Drivers

Recycle ADI Isolation Product:Data Isolators,Isolated ADCs,Isolated Gate Drivers

Shenzhen Mingjiada Electronics Co., Ltd., a leading company in the electronic component recycling sector, specialises in the recycling of all types of electronic components. We provide global clients with efficient and compliant inventory disposal solutions, helping them to quickly recover funds and optimise warehouse management.

[Recycling Process]

Submit details: Simply provide details of the Lattice evaluation boards to be recycled via email or telephone, including model number, quantity, condition and photographs.

Accurate quotation: Our specialist team will typically complete the assessment and provide a competitive quotation within 12 to 24 hours.

Secure Handling: We offer a free nationwide door-to-door collection service covering multiple cities, or arrange insured global logistics services via carriers such as DHL, UPS and SF Express to ensure safe transport.

Payment Upon Inspection: Once the goods have passed inspection, we guarantee full payment within 24 hours, supporting various settlement methods including wire transfer and cash – with a payment cycle significantly shorter than the industry average.

I. Data Isolators: A Secure Bridge for Signal Transmission Between High- and Low-Voltage Domains

Data isolators are fundamental components for transmitting digital and analogue signals across isolation barriers. Their core function is to ensure precise signal transmission without compromising electrical isolation, whilst simultaneously breaking the current loop between high- and low-voltage domains. This prevents faults on the high-voltage side from damaging low-voltage control circuits and effectively suppresses common-mode noise interference. ADI data isolators are based on iCoupler® magnetic isolation technology. They dispense with the light-emitting diode and photodetector structure found in traditional optocouplers, instead utilising chip-level micro-transformers to achieve signal coupling. This fundamentally resolves the pain points associated with optocouplers, such as significant temperature drift, high transmission delay and short service life.

1. Core Technology and Product Features

ADI’s iCoupler® technology integrates multiple micro-transformers onto a single chip and utilises the principle of electromagnetic induction to transmit signals, eliminating the need for external optoelectronic components. It offers the following core advantages: firstly, excellent isolation performance, providing an isolation voltage of up to 7.5 kV RMS, with creepage distances compliant with international safety standards such as UL, CSA and VDE, making it suitable for high-voltage industrial environments; secondly, outstanding transmission performance, with digital isolators achieving data rates of several Gbps and latencies as low as the nanosecond range, whilst analogue isolators guarantee extremely low non-linear error and temperature drift, ensuring signal transmission accuracy; thirdly, high reliability, with no light decay issues, an operating temperature range as wide as –40 °C to 125 °C, and a service life far exceeding that of optocouplers, making them suitable for industrial scenarios requiring long-term continuous operation; Fourthly, they offer a high degree of integration; certain models incorporate multiple isolation channels and power isolation functions, simplifying circuit design and reducing PCB footprint.

2. Typical Products and Application Scenarios

ADI’s data isolators cover multiple categories, including digital, analogue and power isolation, to meet the requirements of different signal types and transmission needs. Among these, the ADuM1400 series four-channel digital isolator, housed in a 16-pin narrow-body SOIC package, provides 3 kV RMS isolation voltage, supports data rates of up to 100 Mbps, and offers high common-mode transient immunity of 25 kV/µs. It is suitable for digital signal isolation in applications such as industrial communications, motor control and power management; The ADuM7223 series, meanwhile, integrates both isolation drive and signal isolation functions, balancing signal transmission and power drive requirements, and is widely used in half-bridge circuit control.

In practical applications, data isolators can be used for signal isolation in industrial fieldbus systems (such as Modbus and CAN), preventing strong electromagnetic interference in industrial environments from affecting communication stability; in medical equipment, they can provide electrical isolation between the device and parts in contact with the human body, ensuring patient safety; in the battery management systems (BMS) of new energy vehicles, they are used to isolate the battery cell voltage acquisition signals from the main control circuit, preventing safety hazards caused by high-voltage battery faults.

II. Isolated ADCs: An Integrated Solution for Analogue Signal Acquisition and Isolation

In applications such as industrial measurement, power monitoring and precision instrumentation, it is often necessary to acquire analogue signals (such as voltage, current and temperature) from the high-voltage side, whilst ensuring electrical isolation between the acquisition circuit and the main control circuit to guarantee system safety and measurement accuracy. Isolated ADCs integrate three key functions—analogue signal conditioning, analogue-to-digital conversion and electrical isolation—making them the ideal choice for such scenarios. ADI’s isolated ADCs combine high-precision ADC technology with iCoupler® magnetic isolation technology to achieve a seamless integration of analogue signal acquisition and isolation, offering high precision, high isolation and high reliability.

1. Core Technology and Product Features

The core advantage of ADI’s isolated ADCs lies in their integrated design combining ‘high-precision acquisition and high-reliability isolation’. On the acquisition side, ADC architectures such as high-performance Σ-Δ modulators and successive approximation registers (SAR) are employed, supporting high resolutions such as 16-bit and 24-bit. These feature low noise, low offset and low non-linearity, enabling the precise acquisition of microvolt-level signals; On the isolation side, iCoupler® technology enables the isolated transmission of analogue or digital signals. Certain models employ a digital isolation architecture, whereby the analogue signal is first converted to a digital signal before being transmitted via an isolated channel, further enhancing immunity to interference and transmission stability.

Furthermore, these products feature a wide input range, allowing them to directly acquire large signals from the high-voltage side without the need for additional signal conditioning circuits; They offer a high degree of integration, with some models incorporating built-in isolated power supplies and reference voltage sources, thereby simplifying system design; they support multiple interfaces (such as SPI and I²C), facilitating interfacing with microcontrollers (MCUs) and digital signal processors (DSPs), and reducing development complexity. Furthermore, the products have obtained international safety certifications, with isolation voltages reaching 5 kV RMS or higher, meeting the safety requirements of high-voltage industrial applications.

2. Typical Products and Application Scenarios

The AD7403 is a typical isolated Σ-Δ modulator from ADI, integrating on-chip digital isolation. Based on iCoupler® technology, it converts and isolates analogue input signals into a high-speed single-bit data stream, making it suitable for high-precision data acquisition systems; The AD7606B series of 8-channel synchronous-sampling ADCs, available in an isolated version, offers 16-bit resolution and sampling rates of up to 200 kSPS. Featuring built-in input protection circuits, they are suitable for monitoring three-phase voltage and current in power systems, as well as multi-channel signal acquisition in industrial equipment.

In the field of power monitoring, isolated ADCs can be used for current and voltage acquisition in high-voltage power grids, enabling real-time monitoring and isolated transmission of grid parameters to ensure the safety of monitoring systems; in industrial automation, they are used for sensor signal acquisition (such as pressure and displacement) from equipment such as machine tools and robots, isolating strong electromagnetic interference from industrial environments to enhance measurement accuracy; in the new energy sector, they are used for current sampling in photovoltaic inverters and wind power converters, enabling power monitoring and isolated protection.

III. Isolated Gate Drivers: The Core of Reliable Drive for Power Semiconductor Devices

In power electronics circuits, power semiconductor devices such as IGBTs and MOSFETs require dedicated gate drivers to provide sufficient drive current and appropriate drive voltage. Furthermore, to prevent damage to the low-voltage control-side circuits caused by high voltages on the power side, gate drivers must incorporate electrical isolation. ADI’s isolated gate drivers, based on iCoupler® magnetic isolation technology, are specifically designed for driving power devices. Featuring high drive capability, high isolation performance, fast response times and comprehensive protection functions, they are core components of power electronics systems.

1. Core Technology and Product Features

ADI’s isolated gate drivers adopt an integrated ‘isolated drive + protection’ design, offering distinct core advantages. Firstly, they deliver high drive capability, with peak output currents reaching several amperes, enabling rapid charging and discharging of the gate capacitance in power devices. This facilitates rapid turn-on and turn-off of power devices, thereby reducing switching losses; secondly, they offer excellent isolation performance; based on iCoupler® technology, they provide an isolation voltage of up to 5.7 kV RMS, with creepage distances meeting industrial high-voltage standards and common-mode transient immunity of over 25 kV/µs, enabling stable operation in environments with strong electromagnetic interference; thirdly, they feature fast response times, low propagation delays and rapid switching speeds, meeting the drive requirements of high-frequency power electronic circuits; Fourthly, comprehensive protection functions: most models integrate overcurrent protection, under-voltage lockout and Miller clamping, enabling real-time monitoring of the power device’s operating status and rapid shutdown in the event of a fault, thereby safeguarding both the power devices and the system.

Furthermore, some models incorporate an isolated DC-DC converter, providing isolated power supplies for both the driver circuit and the power devices simultaneously, thereby further simplifying circuit design; they support various architectures, including single-channel and dual-channel (half-bridge drive), to accommodate different power topologies, whilst offering flexible packaging options to meet installation requirements across diverse scenarios.

2. Typical Products and Application Scenarios

The ADuM4177 is a high-performance isolated gate driver from ADI, offering 5.7 kV RMS isolation voltage. It is housed in a 28-pin wide-body SOIC package with a creepage distance of 8.3 mm, making it suitable for high-voltage power conversion applications; The ADuM4223 series of 4 A isolated half-bridge gate drivers provides independent high-side and low-side outputs, supporting isolation voltages of 3 kV RMS (ADuM3223) and 5 kV RMS (ADuM4223). With integrated Miller clamping and fault detection functions, they are widely used in half-bridge inverters and motor drive circuits; The ADuM5230 series integrates an isolated DC-DC converter, achieving dual isolation between the drive signal and the power supply, thereby simplifying the system’s power supply design.

In the new energy vehicle sector, isolated gate drivers are used to drive power devices in motor controllers, on-board chargers (OBCs) and DC-DC converters, ensuring the safe isolation of high-voltage circuits from low-voltage control circuits; In industrial power supplies, they are used in the power conversion circuits of UPS systems, variable frequency drives and servo drives, enhancing the efficiency and reliability of the power supply; in new energy generation sectors such as photovoltaic and wind power, they are used to drive power devices in inverters, enabling the efficient conversion and transmission of electrical energy.