Blog về công ty Mingjiada Electronics Supplies AD7124: An 8-channel, Low-Noise, Low-Power 24-bit Σ-Δ ADC, Suitable for High-Precision Measurements

Mingjiada Electronics supplies the AD7124: an 8-channel, low-noise, low-power 24-bit Σ-Δ ADC, ideal for high-precision measurements; brand-new, genuine stock available

Product Overview

In fields such as industrial automation, medical monitoring and precision instrumentation, high-precision analogue signal acquisition has always been a core challenge in system design. The AD7124-8, an 8-channel, low-noise, low-power 24-bit Σ-Δ analogue-to-digital converter (ADC) launched by Analog Devices (ADI), is becoming the industry benchmark for high-precision measurement applications thanks to its fully integrated analogue front-end solution. Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned authorised independent distributor of electronic components, has long provided a stable supply of the full range of AD7124 series products, offering customers across various industries a one-stop procurement service featuring genuine, original products, stock availability and rapid delivery.

Key Technical Features

The AD7124-8 incorporates a low-noise 24-bit Σ-Δ ADC that can be configured for 8 differential inputs or 15 single-ended/pseudo-differential inputs. An on-chip low-noise gain stage ensures that signals with very small amplitudes can be directly fed into the ADC for conversion. The device’s key technical advantages include:

Three flexible power consumption modes are a key highlight of the AD7124-8. In low-power mode, with 1.17 SPS and a gain of 128, the RMS noise is just 24 nV, with a typical current consumption of 255 μA; in medium-power mode, with 2.34 SPS and a gain of 128, the RMS noise is 20 nV, with a typical current of 355 μA; in full-power mode, at 9.4 SPS and a gain of 128, the RMS noise is 23 nV, with a typical current consumption of 930 μA. Users can flexibly balance power consumption, noise and output rate according to their specific application requirements.

The AD7124-8 achieves up to 22 bits of noise-free resolution (gain = 1) in all power modes. In terms of output data rates, full-power mode supports 9.38 SPS to 19,200 SPS, medium-power mode supports 2.34 SPS to 4,800 SPS, and low-power mode supports 1.17 SPS to 2,400 SPS. The device also integrates a programmable gain amplifier (gain 1 to 128), supports rail-to-rail analogue inputs (when gain is greater than 1), and features simultaneous 50 Hz/60 Hz suppression (25 SPS, single-cycle settling), achieving suppression performance exceeding 80 dB at lower output data rates.

In terms of integration, the AD7124-8 incorporates a precision, low-noise, low-drift bandgap reference voltage source (maximum drift of 10 ppm/°C, current of 70 μA), whilst also supporting an external differential reference voltage input with internal buffering. Other integrated features include a programmable matched drive current source, open-circuit detection current control, a bias voltage generator, an on-chip temperature sensor, an internal clock oscillator and a low-side power switch. The device is housed in a 32-pin LFCSP package, operates over a temperature range of –40 °C to +125 °C, and has a maximum quiescent current of just 5 μA.

Typical Applications

The AD7124-8’s high-precision measurement capabilities have been thoroughly validated across multiple industries. In the field of industrial process control, the AD7124-8 can be used for high-precision signal acquisition from temperature, pressure and flow sensors. It supports both three-wire and four-wire RTD measurement configurations and, in conjunction with the internal excitation current source and automatic channel sequencer, enables efficient polling of multi-channel temperature measurements. In the field of medical equipment, this ADC is suitable for monitoring bioelectric signals such as electrocardiograms (ECG) and electroencephalograms (EEG); its low-noise characteristics and high resolution enable the capture of faint physiological electrical signals. Furthermore, the AD7124-8 offers broad application prospects in smart energy management, environmental monitoring and wearable devices.

The AD7124-8 offers a variety of filter options (Sinc3, Sinc4, fast stabilisation mode), which users can flexibly configure via registers to meet the settling time and noise performance requirements of different scenarios. The device supports diagnostic functions such as self-calibration and system calibration, open-circuit sensor detection, CRC checks and signal chain verification, which assist the system in achieving Safety Integrity Level (SIL) certification.

Mingjiada Electronics Supply Services

Established in 1996, Shenzhen Mingjiada Electronics Co., Ltd. is a globally renowned authorised independent distributor of electronic components. Headquartered in the Electronic Business Centre of Futian District, Shenzhen, the company has branches in Hong Kong, Japan, Russia and Taiwan. The company has obtained ISO 9001:2014 Quality Management System and ISO 14001:2014 Environmental Management System certifications, and has established a comprehensive supply chain system with stable supply channels and robust technical support capabilities.

Mingjiada Electronics has long supplied the AD7124 series, including the mainstream AD7124-8BBCPZ model. The company maintains substantial stock levels, offering ultra-short lead times (1–3 days) to ensure timely delivery, and is supported by a dedicated technical support team to respond swiftly to customer requirements.

Mingjiada Electronics has established partnerships with over 500 renowned global brands, including ADI, TI, Xilinx, NXP and ST, and is committed to providing global customers with electronic component solutions featuring genuine OEM products, stock availability and rapid delivery. Whether you are in the early stages of product development or in mass production, Mingjiada Electronics can provide you with a one-stop supply service for the AD7124 series.

Contact us now for the latest quotations and stock availability for the AD7124:

Tel: +86 13410018555

Email: sales@hkmjd.com

Address: Rooms 1239–1241, Guoli Building, Zhenzhong Road, Futian District, Shenzhen

Tags: AD7124-8BBCPZ, AD7124-8BBCP, AD7124-8BBC, AD7124-8BB, AD7124-8B, AD7124-8, AD7124