In the current era of rapid technological development, the importance of chips as the core components of many electronic devices is self-evident. For a long time, some high-end chip markets have been dominated by foreign products, such as TI's ADS1119, a widely used 16 bit precision analog-to-digital converter. But in recent years, with the rise of domestic chip technology, domestic chips have continuously broken through in performance and quality, among which LHA7919 has become a powerful choice to replace ADS1119 with its outstanding performance.
ADS1119 holds a certain market share due to its precise analog-to-digital conversion capability. It integrates multiple practical features to meet common system monitoring function requirements, such as power supply voltage, current, and temperature monitoring. This device can achieve two differential inputs or four single ended inputs through a flexible input multiplexer, paired with rail to rail input buffers, programmable gain stages, voltage references, and oscillators. ADS1119 is also equipped with a buffer that can be directly connected to a high impedance source. The gain stage can be selected with gains of 1 and 4, and can stably perform conversion through a single cycle at data rates up to 1000 samples per second (sps). In industrial applications in noisy environments, when the sampling frequency is 20sps, the digital filter can simultaneously meet the requirements of 50Hz and 60Hz suppression. It has a 2-wire interface compatible with I ² C, supports up to 1Mbps I ² C bus speed, and can select 16 different I ² C addresses through two address pins. It is available in a leadless 16 pin WQFN or 16 pin TSSOP package, with a rated operating temperature range of -40 ° C to+125 ° C.
The domestically produced LHA7919 is on par with ADS1119 in terms of performance parameters, and even has advantages in some key areas. In terms of analog-to-digital conversion accuracy, LHA7919 also achieves 16 bit high precision, which can accurately realize the digital conversion of analog signals, ensure the accuracy of data, and provide a solid foundation for the stable operation of equipment. In terms of channel configuration, LHA7919 supports multiple channel inputs, whether it is differential input or single ended input mode, which can flexibly adapt to different application scenarios and meet diverse circuit design requirements. Compared with the input mode of ADS1119, it provides a wider range of application possibilities.
The domestically produced chip LHA7919 has demonstrated strong capabilities in performance, interface, packaging, and application adaptability, which can replace ADS1119. With the continuous development and innovation of the domestic chip industry, high-quality domestic chips like LHA7919 will gradually achieve import substitution in more fields, promoting the independent, controllable and prosperous development of China's electronic industry supply chain. And other Linghui Lixin high-precision ADC chips can replace more TI high-precision ADC chips, as follows:
