MAX1167BCEE+T

Data Acquisition - Analog to Digital Converters (ADC)

The MAX1167BCEE+T is the latest and greatest Application Specific Integrated Circuit (ASIC) designed by Maxim Integrated Products. It combines two important functions, an Analog to Digital Converter (ADC) and a Temperature Sensor, into one chip package, making it perfect for a variety of applications. This article will introduce its application field as well as its working principle.

Application Field

The MAX1167BCEE+T is mainly used in medical and commercial applications. It is ideal for data logging and medical monitors, such as glucose meters, heart rate monitors, and blood pressure monitors. It is also used in commercial applications, such as viewscreens, displays, and wireless communication devices. As it combines two functions into one package, it is extremely versatile and able to handle a variety of tasks.

Working Principle

The MAX1167BCEE+T utilizes a successive approximation register (SAR) which converts analog signals into digital data. The ADC has an input stage followed by a comparator stage and a digital-to-analog converter (DAC). The input is sampled on a continuous basis and the comparator compares it to a reference voltage generated by the onboard DAC. After each bit is found, the comparator is reset and the data is stored in a register. The entire process is repeated until all bits are found and the digital output data is obtained.

In addition to the ADC portion, the MAX1167BCEE+T also has a temperature sensor. The temperature is measured by an N-Channel MOSFET (NMFET) with a high electron mobility. The NMFET is used to generate a temperature-dependent output voltage, which can be converted to a digital value. This temperature value is then used for temperature adjustment and temperature compensation for the ADC.

Conclusion

The MAX1167BCEE+T is a versatile and powerful ADC chip. It combines the power of an ADC and a temperature sensor into one package and is perfect for medical and commercial applications. It utilizes an SAR module with a reference DAC to generate digital output data, while the temperature sensor uses an NMFET to measure the temperature. This two-in-one package makes the MAX1167 the perfect choice for a variety of applications.