Blog Perusahaan Tentang Recycle ADI Data Converters:ADC/DAC Combo Converter,Audio & Video CODEC,Digital Potentiometer

Recycle ADI Data Converters:ADC/DAC Combo Converter,Audio & Video CODEC,Digital Potentiometer

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

Once the products arrive 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 customer recovers their funds promptly. Payment methods are flexible and can be arranged via wire transfer, cash or other means according to the customer’s requirements.

I. ADC/DAC Combination Converters

Traditional ADCs (analogue-to-digital converters) only convert analogue signals to digital signals, whilst a DAC (digital-to-analogue converter) merely converts digital signals to analogue signals. In contrast, the ADC/DAC combination converter is an integrated single-chip solution introduced by ADI, which combines multiple ADC acquisition channels and multiple DAC output channels within a single device. It eliminates the need for external, independent converter chips, thereby significantly simplifying hardware circuit design, reducing device size, and lowering system power consumption and costs. It serves as a core component in embedded data acquisition and closed-loop control systems.

1. Core Technical Architecture and Advantages

ADI’s combined converters generally employ a proprietary multi-bit Σ-Δ modulator architecture, coupled with high-precision interpolation and decimation filters, to balance conversion accuracy and sampling rate. The chip integrates a programmable gain amplifier, analogue clamping protection circuitry and a voltage reference source, enabling integrated signal acquisition, conditioning, conversion and output. Compared to discrete solutions, their key advantages lie in three areas: firstly, strong channel synchronisation, as the on-chip ADC and DAC share a common clock reference, thereby avoiding signal delay errors caused by clock drift in discrete components; secondly, excellent immunity to interference, as the integrated package optimises the layout of the analogue and digital grounds, reducing crosstalk noise; thirdly, flexible configuration: it supports common communication interfaces such as SPI, allowing independent software configuration of each channel’s sampling rate, output gain and operating mode.

2. Typical Product Models and Specifications

The AD1928 is ADI’s classic high-performance ADC/DAC combination converter, utilising a single-chip integrated architecture. It features two differential-input ADCs and eight single-ended-output DACs, with the entire series employing patented multi-bit Σ-Δ conversion technology. The chip supports a single 3.3V power supply and incorporates a high-precision filtering unit that effectively filters out high-frequency interference signals. Core configurations such as volume and conversion parameters can be flexibly adjusted via the SPI interface, making it suitable for medium- to high-speed signal conversion applications.

The AD1838A, on the other hand, is designed for high-precision audio and measurement and control applications. It integrates three stereo DACs and one stereo ADC; all DAC channels are equipped with independent digital interpolation filters, click-free mute modules and programmable volume control units. The ADC channels support 24-bit high-precision conversion, whilst the differential output design further enhances signal integrity, making it ideally suited for high-fidelity signal processing applications.

In addition, the AD7606B, as an industrial-grade combined conversion chip, integrates eight synchronously sampled ADCs. Coupled with programmable gain adjustment and overvoltage protection functions, its 16-bit conversion precision meets the demands of demanding industrial applications such as high-precision data acquisition, motor control and power monitoring.

3. Core Application Scenarios

It is primarily used in industrial closed-loop control systems, smart sensor terminals, portable measurement and control equipment, automotive in-vehicle signal acquisition systems, and general-purpose industrial data acquisition modules. It is particularly suitable for scenarios requiring simultaneous signal acquisition and analogue output feedback, enabling the rapid implementation of closed-loop control involving data acquisition, algorithmic computation and analogue execution, thereby significantly enhancing system response efficiency and stability.

II. Audio and Video Codecs

ADI audio and video codecs are integrated conversion chips specifically designed for multimedia signal processing. Essentially high-precision, specialised ADC/DAC combination devices, their architecture is optimised for the transmission, encoding and decoding characteristics of audio and video signals. They integrate functions such as signal conversion, audio processing, image quality correction and noise reduction filtering, and serve as core components in consumer audio-visual equipment, professional audio-visual equipment and in-vehicle multimedia systems.

1. Key Features and Products of Audio Codecs

ADI audio codecs are characterised by high fidelity, low power consumption and low distortion. They are specifically optimised for the bidirectional conversion of analogue audio signals—such as vocals and music—into digital audio signals and vice versa. Featuring a built-in professional audio DSP processing unit, they support algorithms including equalisation, dynamic compression, noise reduction, mixing and stereo enhancement, enabling high-quality audio output without the need for external audio processing chips.

The ADAU1761 is a leading low-power stereo audio codec suitable for portable audio-visual devices. It supports 48 kHz stereo recording and playback, with a power consumption of just 14 mW when operating on a 1.8 V analogue power supply; its ultra-low power consumption makes it ideal for battery-powered devices. The chip can compensate for hardware deviations in microphones and speakers via software, optimising the audio experience in the listening environment, and is widely used in Bluetooth headsets, portable speakers and smart wearable devices.

The ADAU1701 is a high-end single-chip audio system-on-chip solution, integrating a 28/56-bit high-precision audio DSP, multiple ADC/DAC conversion channels and an intelligent control interface. It supports professional audio processing such as bass enhancement, delay compensation, multi-band dynamic processing and stereo image expansion, and can adaptively optimise audio quality for different speakers and playback scenarios. It is commonly used in professional audio systems, high-end in-car audio-visual systems and conference audio equipment.

2. Video Codec Technical Features

ADI video codecs focus on the conversion, decoding and correction of high-definition analogue and digital video signals. They support signal processing for mainstream video interfaces such as CVBS and HDMI, and feature colour calibration, noise suppression and signal synchronisation correction functions, thereby resolving issues such as motion blur, distortion and colour aberration during video transmission. The chips integrate high-speed conversion channels, supporting real-time conversion of standard-definition and high-definition video signals. They are characterised by high frame rates, low latency and high colour fidelity, and are widely used in in-vehicle displays, industrial surveillance and high-definition audio-visual playback equipment.

3. Overall Application Scenarios

Audio codecs are primarily used in smart audio devices, in-vehicle audio-visual systems, professional recording equipment, conference terminals and smart home audio-visual modules; video codecs are primarily used in industrial surveillance equipment, in-vehicle display systems, high-definition playback terminals and embedded multimedia devices. Thanks to their high integration, simple debugging and excellent audio and video quality, they have become the preferred solution for both consumer and industrial multimedia equipment.

III. Digital Potentiometers

ADI digital potentiometers (also known as digiPOTs or RDACs) are digitally calibrated devices that replace traditional mechanical potentiometers. By precisely adjusting the equivalent resistance value via digital signals, they enable dynamic control of circuit gain, bias voltage and load parameters. As digital-to-analogue control data conversion devices, they perfectly resolve the pain points associated with mechanical potentiometers, such as wear and tear, low accuracy, lack of programmability and poor stability.

1. Core Technical Advantages

Compared to traditional mechanical potentiometers, ADI digital potentiometers offer four key advantages: firstly, high precision and high resolution, with fine-grained resistance adjustment steps and an extremely low error rate; secondly, fully digital programmable control, enabling automatic software adjustment via MCUs or FPGAs, and supporting remote calibration and dynamic parameter adjustment; thirdly, high stability and long service life, with no mechanical contact wear, resistance to vibration and humidity, and stable performance across the industrial temperature range; fourthly, high integration and compact size, with a compact package suitable for miniaturised equipment designs.

2. Typical Products and Performance Features

The AD5123 and AD5143 are ADI’s mainstream industrial-grade digital potentiometers, suitable for wide-temperature industrial applications. They support multi-channel resistance adjustment and feature precise tolerance calibration capabilities, enabling dynamic correction of deviations in system circuit parameters to resolve consistency errors in mass production. Models such as the DS1845B-010+ are designed for miniaturised consumer electronics; utilising a micro CSBGA package, they balance compact size with adjustment precision, making them suitable for the calibration of precision, compact circuits.

The entire range of digital potentiometers supports non-volatile parameter storage, retaining adjustment settings after power loss. This eliminates the need for recalibration at each power-up, significantly simplifying the equipment commissioning process and enhancing system operational stability.

3. Core Application Scenarios

These are primarily used for system hardware calibration, circuit gain adjustment, power supply voltage fine-tuning, sensor parameter compensation, precise audio volume control, and adaptive parameter correction in industrial equipment. They are widely applied in industrial automation equipment, precision instruments and meters, power supply equipment, audio amplifiers, smart sensors, and communications equipment—scenarios requiring precise, long-term stable, and programme-controlled resistive adjustment.

IV. Key Differences Between the Three Device Categories and Selection Logic

1. Differences in Functional Positioning: ADC/DAC combination converters are designed to achieve high-precision bidirectional conversion between analogue and digital signals, serving data acquisition and closed-loop control; audio and video codecs are specialised conversion devices focused on multimedia signal processing and optimisation of audio and video quality; digital potentiometers specialise in digital resistance adjustment and circuit parameter calibration, and are classified as devices for fine-tuning analogue circuits.

2. Differences in Accuracy and Application Scenarios: Combined converters emphasise industrial-grade, high-precision signal conversion, suitable for measurement and control scenarios; audio-video codecs prioritise signal fidelity and real-time performance, suitable for multimedia scenarios; digital potentiometers focus on parameter calibration and dynamic fine-tuning, suitable for circuit optimisation scenarios.

3. Core logic for selection: Where bidirectional signal acquisition and closed-loop output control are required, select an ADC/DAC combination converter; where audio-visual signal encoding and decoding, as well as optimisation of picture and sound quality, are required, select a dedicated audio-video codec; where precise programmable calibration of circuit resistance, gain and voltage is required, select a digital potentiometer.