National Semiconductor breakthrough sensor system design, the sensor can be configured analog front-end circuit can simplify the design process, shorten the time to market

January 25, 2011 Chinese - News - National Semiconductor Corporation Ns (National Semiconductor (Corp.) listed on the New York stock exchange code: NSM) announced the launch of two configurable analog front-end sensor (AFE) integrated circuit, two products with original national semiconductor, and access to a variety of new design tools support the signal path design products of various types of sensors to complete the system design engineer can use various manufacturers, products to market quickly. The design engineer system as long as the use of these two configurable sensor analog front-end circuit, you can use WEBENCH sensor analog front-end circuit design tools (WEBENCH Sensor AFE Designer) sensor signal path design. In other words, the engineer can use this design tool to select the sensor, design, configure the solution and download the configuration parameters to the sensor analog front-end circuit. At present, a typical application of the sensor requires a number of circuit boards and up to 25 components, and the U.S. National Semiconductor program, only one chip can be. Similarly, the design of a sensor system in the past, a few weeks or even a few months time, and the use of National Semiconductor's new products and design tools, design time can be shortened to a few minutes. Current sensor system has been widely used in various industries, such as the critical monitoring system, the monitoring system of the volume of more compact, and require less power consumption and higher reliability. National Semiconductor precision system business director Anita Ganti said: "the circuit design of the sensor system is not only time consuming and based on complex design also needs to develop the special system for each. Now, many engineers have to spend a few weeks or even months to successfully develop a custom analog sensor solution, but now the national semiconductor can help them at a faster speed to market. "National Semiconductor's two new sensor analog front-end chip is configurable analog front-end circuit sensor product series head two products. These two chips have their own characteristics, suitable for different sensor systems, these features include programmable current source, self reference voltage and adjustable sampling rate. The LMP91000 chip is the industry's first fully configurable low power constant potential instrument that provides a highly integrated and complete signal path between the sensor and the analog to digital converter (ADC). LMP90100 chip is the industry's first truly continuous calibration of the background signal and make a diagnosis of 24, multi-channel, low-power sensor analog front-end circuit, suitable for high-performance transceivers and inverter systems. National Semiconductor WEBENCH sensor analog front-end circuit design tool is compatible with a variety of specifications, can support hundreds of temperature, pressure and chemical sensors. The database covers many sensor products Omega Engineering., Honeywell Sensing & Control, Tempco Electric and All Heater Sensors company. The United States National Semiconductor LMP90100 chip specifications national semiconductor LMP90100 chip is 24 bit, multi-channel, low power sensor industry's first truly continuous calibration of the background signal and make a diagnosis of the analog front-end circuit, suitable for high performance transceiver and inverter system. The background signal calibration technology of the National Semiconductor patent can effectively eliminate the drift with the change of time and temperature. LMP90100 in addition to the built-in 24 bit Sigma-delta ADC, also uses flexible input (multiplexer) configuration, so it can support any proportion differential or single ended input. The signal gain of each sensor (including 1, 2, 4, 8, 16, 32, 64 and 128), sampling rate and diagnostic parameters can be programmed. The average power consumption of LMP90100 chip is lower than the average value of 0.7mA in the temperature range of oC to -40 +125 oC can ensure the normal work, the characteristics of this chip is ideal for temperature or to 4mA transceiver in 20mA system. For further information or to order samples and evaluation boards, can browse the web http://bit.ly/LMP90100. The United States National Semiconductor LMP91000 chip specifications national semiconductor LMP91000 chip is the industry's first comprehensive low power configuration of the potentiostat can provide a highly integrated complete signal path in sensor and ADC.. The configurable analog front end circuit is suitable for micro power consumption of chemical substances and gas detection applications, such as three pole single gas sensor and double end oxygen sensor. The LMP91000 chip measures the current in a constant potential instrument, which is proportional to the measured gas content. By means of a transimpedance amplifier, the LMP91000 generates an output voltage proportional to the current, thereby calculating the gas content. LMP91000 allows the user via the I2C compatible interface to set the transimpedance gain value, so it can support respond to noxious gas content between 0.5nA/ppm and 9.5nA/ppm. In addition, the power consumption of LM91000 is very low, so it is suitable for battery powered system as well as 4mA to 20mA transceiver system. This chip potentiostat output voltage and gain can be set according to the design requirements, the engineer can detect more types of gas, or detection of gas concentration, and ensure that the power system can be as low as 1