会社ブログについて Recycle ADI ADCs:Energy Measurement ADC,High Speed ADC,Precision ADC,R/D Converter

Recycle ADI ADCs:Energy Measurement ADC,High Speed ADC,Precision ADC,R/D Converter

Shenzhen Mingjiada Electronics Co., Ltd. is a globally renowned electronic component recycling company. By providing professional recycling services, we help our clients realise the value of their idle electronic components; thanks to our strong financial standing and comprehensive service system, we have earned the long-term trust and cooperation of numerous manufacturing clients and traders.

Recycling Process:

1. Inventory Sorting and Submission of Inventory List

Clients first sort their idle stock, specifying the model, brand, production date, quantity, packaging type and condition. Clients may send a detailed inventory list to our valuation team via email or fax.

2. Professional Valuation and Quotation

Upon receipt of the inventory list, the company will complete a preliminary valuation and provide a quotation within 24 hours.

3. Contract Signing and Logistics Arrangements

Once both parties have agreed on the price, a formal buy-back contract will be signed to clarify the transaction details.

4. Goods Inspection and Prompt Payment

Upon arrival of the products at our warehouse, a final quality inspection will be carried out. Upon passing the inspection, the company undertakes to complete payment within three working days, ensuring the client recovers their funds promptly. Payment methods are flexible and can be arranged via wire transfer, cash or other means according to the client’s requirements.

I. Energy Measurement ADCs: Core Components Dedicated to Electrical Energy Metering

ADI’s energy measurement ADCs are specialised analogue-to-digital conversion chips customised for electrical energy metering, power grid quality monitoring and end-user energy consumption control scenarios. Unlike general-purpose ADCs, this product series eliminates redundant features and focuses on the core requirements of power applications—precise sampling, harmonic analysis and power metering—serving as the cornerstone hardware for smart meters, power monitoring terminals and photovoltaic energy storage monitoring equipment.

Key Technical Features

The chips in this series generally employ a high-performance Σ-Δ modulation architecture and support multi-channel synchronous sampling, enabling the precise capture of instantaneous changes in grid voltage and current. They feature wide-load, high-precision, constant performance characteristics, maintaining stable metering accuracy under both light and heavy load conditions, thereby effectively mitigating measurement errors caused by fluctuations in grid load; They integrate functions for calculating harmonics, reactive power, active power and apparent power, eliminating the need for additional peripheral processing circuits and significantly simplifying system design. At the same time, they possess high immunity to interference, are suited to the complex electromagnetic environments of industrial power grids, and meet the stringent metering accuracy standards of the power industry.

Leading Models and Applications

The ADEMA124 and ADEMA127 are the flagship products in this series. The ADEMA124 is a 4-channel synchronous sampling ADC, whilst the ADEMA127 is a 7-channel synchronous sampling ADC. Both feature a 24-bit high-precision architecture and are specifically designed for multi-phase and phase-separated energy metering scenarios. They are compatible with voltage divider and shunt sampling circuits and are widely used in single-phase/ three-phase smart meters, energy consumption monitoring terminals for industry and commerce, and power grid power quality analysers. Furthermore, several models integrate phase compensation and gain calibration functions, which automatically correct sampling deviations to ensure long-term metering stability, perfectly meeting the power industry’s core requirements for long-term online monitoring and high-precision billing.

II. High-Speed ADCs: Core Chips for RF Communication and High-Speed Signal Acquisition

ADI’s high-speed ADCs are high-performance products designed for high-frequency and high-speed analogue signal conversion applications. Their core advantages lie in ultra-high sampling rates and wide bandwidth response; they primarily address the challenges of digitising RF signals, high-frequency pulses and high-speed dynamic signals, and serve as core components in communications, radar, software-defined radio and high-speed test equipment.

Key Technical Features

ADI’s high-speed ADC products cover the full range of sampling rates from 10 MSPS to over 1 GSPS, categorised into three main product families: high-to-mid-frequency (10 MSPS–125 MSPS), low-to-mid-frequency (125 MSPS–1 GSPS) and ultra-wideband (over 1 GSPS), capable of meeting high-frequency signal acquisition requirements across different frequency bands. The products feature excellent signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR), effectively suppressing signal distortion during high-speed sampling and accurately reproducing the details of high-frequency analogue signals. They also incorporate high-speed serial interfaces to support real-time high-speed data transmission, are compatible with mainstream FPGA and processor architectures, and are suited to high-speed data processing systems. Certain models integrate receivers and filter circuits, enabling integrated signal acquisition, pre-processing and conversion, thereby simplifying RF front-end design.

Mainstream Application Scenarios

Widely used in 5G/6G RF communication base stations, military and civilian radar detection, software-defined radio equipment, high-speed spectrum analysers, laser ranging, ultrasonic testing and other applications. In high-frequency dynamic signal acquisition scenarios, it can accurately capture transient pulses and high-frequency oscillation signals, addressing the pain points of insufficient sampling rates and severe high-frequency distortion in general-purpose ADCs, thereby ensuring the signal acquisition accuracy and real-time performance of high-speed dynamic systems.

III. High-Precision ADCs: The Benchmark for Industrial Precision Measurement and Weak Signal Acquisition

High-precision ADCs, also known as precision ADCs, are a core representation of ADI’s precision analogue technology. They feature ultra-high resolution, ultra-low noise and extremely low offset error, and are specialised in the acquisition of weak DC and low-frequency AC precision signals. They cater to applications demanding the utmost measurement accuracy, such as industrial measurement and control, instrumentation, sensing and detection, and medical equipment. With resolutions ranging from 8 to 32 bits, they are currently the mainstream core components in the field of industrial precision measurement.

Key Technical Features

This product series primarily utilises two mainstream precision architectures: SAR (Successive Approximation Register) and Σ-Δ. Products based on the Σ-Δ architecture offer ultra-low noise and high dynamic range as their core advantages, making them suitable for the acquisition of weak signals; SAR architecture products balance high precision with medium-to-high-speed sampling, making them suitable for multi-channel precision sampling scenarios. The products exhibit excellent temperature drift characteristics, with minimal measurement error across a wide operating temperature range of –40 °C to +125 °C, making them suitable for harsh industrial environments. They also support multi-channel synchronous sampling and high-voltage input compatibility. Certain high-end models integrate digital filtering, fault diagnosis and CRC verification functions, enabling precise signal denoising and system self-diagnosis, thereby significantly enhancing measurement stability and reliability.

Representative Models and Applications

The AD7768-1 is a classic, low-power, high-performance Σ-Δ precision ADC that integrates a modulator and digital filter to enable precise conversion of AC and DC signals, making it suitable for industrial sensing and portable precision testing equipment; the AD4134 is a 24-bit, 4-channel synchronous sampling non-aliasing ADC, characterised by low noise and high synchronisation, suitable for industrial process control and high-precision data acquisition cards; The AD4858 is a 20-bit, 8-channel high-voltage synchronous-sampling ADC, specifically designed for wide-voltage-input applications. It is widely used in ATE (Automated Test Equipment), semiconductor testing, precision power quality analysis, and high- and low-side voltage and current sampling applications. Furthermore, 24-bit low-power models such as the AD7718 have long been utilised in medical instruments, load cell applications, and precision temperature and pressure measurement due to their stable accuracy performance.

IV. R/D Converters (Resolver-to-Digital Converters): The Core of Precise Motion Control Decoding

R/D converter is a specialised conversion chip developed by ADI specifically for motion position and angle detection applications. Its core function is to precisely convert the analogue differential voltage signal output by a rotary transformer into digital angle and position data. It serves as a dedicated core component for industrial servo control, motor drives and precision motion measurement and control. Unlike general-purpose ADCs, it features proprietary algorithmic optimisations tailored to the characteristics of rotary transformer signals.

Key Technical Features

ADI’s R/D converters offer three key advantages: high angular resolution, ultra-low conversion latency and strong resistance to vibration interference. They can accurately decode the analogue phase signals from rotary transformers and output high-precision digital angle and position data in real time. The product supports a wide range of rotational speeds, making it suitable for both low-speed precision positioning and high-speed dynamic tracking scenarios. With extremely low conversion latency, it meets the high-speed closed-loop control requirements of servo systems. It also boasts exceptional environmental adaptability, offering resistance to electromagnetic interference and mechanical vibration, and can operate stably in industrial environments characterised by high temperatures, high humidity and strong interference. Requiring no complex external calibration circuits, it features high integration and strong system stability.

Core Application Scenarios

These products are primarily used in high-end motion control fields such as industrial servo motors, stepper motor position closed-loop control, robotic joint motion detection, CNC machine tool spindle positioning, aerospace attitude detection, and new energy vehicle motor control systems. They can accurately feedback the motor rotor angle and the position of the motion mechanism, providing core data support for high-precision motion control and ensuring equipment positioning accuracy and operational stability.