Industrial measurement application of domestic dual-channel high-reliability Sigma-Delta ADC

ADC is the bridge connecting the real world and the digital world. Because it involves high technical barriers such as processes, circuits, and systems, its design is extremely difficult and it is known as the jewel in the crown of analog circuits.

In order to precisely focus on the field of industrial measurement, the company launched the high-reliability, low-power Sigma-Delta ADC CS1238DME chip, which can achieve an effective resolution of 20.7 bits (PGA=128) and a gain error of 8ppm through a programmable gain amplifier (PGA). It has a built-in temperature sensor and a high-precision oscillator, and has two differential input channels.

Accurate measurement is always the top priority in industrial measurement

In industrial production automation control, accurate measurement data is the basis. Higher measurement accuracy can get smaller measurement errors, thereby improving the accuracy of production process parameters. It directly affects work efficiency and product quality, and even production safety.

At the same time, industrial production equipment often operates in complex and harsh working environments, with high temperature, high humidity and high vibration as its basic form. Modern factories even require 24 hours × N non-stop operation. In applications such as equipment detection and control, signal measurement, etc., the relevant components need to be in close contact with the measured medium, so it is necessary to ensure that the measuring instruments and equipment are highly reliable and stable in material applicability.

Focusing on high-precision industrial measurement and carefully creating industrial-grade ADC

CS1238DME is mainly used in industrial applications such as industrial transmitters, pressure measurement, and weighing equipment that require low power consumption, high-precision measurement, and multi-protocol industrial communications and interfaces. It provides cost-effective and highly reliable solutions for market segments such as industrial control processes, liquid/gas chemical analysis, blood meters, electronic scales, smart converters, and portable devices.

In terms of functional characteristics, the CS1238DME achieves 24-bit differential input without missing codes, has a low-noise PGA, and supports four-speed selection of amplification factors: 1/2/64/128, which can process a wider range of signals. The data output rate can be selected: 10Hz, 40Hz, 640Hz, 1.28kHz. The minimum power consumption is 0.6mW, and the INL is less than 0.0015%.

CS1238 has a power down function, which can enter the power down mode when SCLK changes from low level to high level and maintains for more than 100µs. In this mode, the current consumption is less than 0.1μA. When SCLK returns to low level again, the chip will enter normal working state again. The highly integrated function of the chip allows engineers to design more flexibly according to system needs, especially in applications with weak signals and limited space range, which can achieve low power consumption of the system.

In addition, the CS1238DME uses more stable internal IP and frame materials, and is carefully crafted from the inside out, which can help engineers quickly design high-reliability products that meet industrial standards.

CS1237/CS1238 Application Diagram

Close to customers' real needs, professional capabilities to ensure product quality

Chipsea Technology has always been committed to providing customers with innovative products, services and solutions. In order to better meet customers' application needs, the specifications of CS1238DME are as follows:

CS1238DME SOP, 14 pins, 8.6mm×5.9mm.

In addition, CS1238 is available in two package types: QFN16 (3mm×3mm) and SOP14 (8.6mm×5.9mm).

At the same time, Chipsea Technology will also provide product evaluation modules, application manuals and rich design resources to help customers improve accuracy, increase bandwidth, reduce power consumption, reduce size and save costs while simplifying system development.

At the same time, Chipsea Technology will also provide product evaluation modules, application manuals and rich design resources to help customers improve accuracy, increase bandwidth, reduce power consumption, reduce size and save costs while simplifying system development.

For more product information and technical support, please visit Chipsea official website (https://www.chipsea.com)

As a leading company in the domestic analog chip field that has broken the international monopoly of high-precision ADC, Xinhai Technology has brought together a high-quality design and development team including senior experts who have been engaged in integrated circuit design for many years and masters and doctors, which effectively guarantees the leading position of its products in technology and quality and completely independent intellectual property rights.

After nearly 20 years of deep cultivation in the field of analog signal chain chips, Xinhai's ADC series products have been widely used in pan-health equipment, industrial measurement, consumer electronics, smart home, automotive electronics and other industries. In the future, Xinhai Technology will continue to focus on the field of full signal chain chips, adhere to the "analog signal chain + high-reliability MCU" dual platform drive, closely combine with customers' real application needs, and strive to create long-term value for customers.