MAX11644EUA+T

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Data acquisition requires the conversion of analog signals into digital form. The MAX11644EUA+T is an analog to digital converter (ADC) and part of a family of devices called successive approximation register (SAR) ADCs. As part of the MAXIM Integrated portfolio of products, the MAX11644EUA+T is a high-speed, low power, 16-bit multi-channel SAR ADC for low voltage operation.

The application field of the MAX11644EUA+T is diverse and includes energy management, automotive, industrial and medical systems, to name a few. It can be used for various applications such as power conversion, motor drive control, audio signal processing, and prognostic health monitoring (PHM). Examples of application areas are motor control, energy management, automotive and industrial systems, and medical systems.

The MAX11644EUA+T provides 16-bit performance at lower power consumption than other 16-bit SAR ADCs. It features outstanding accuracy and stability over temperature, making it the ideal solution for applications that require accurate data acquisition in harsh operational environments. It has a wide operating temperature range of -40°C to +125°C and is available in a space saving 5mm x 5mm QFN package.

The MAX11644EUA+T sample and hold architecture utilizes four pipeline stages to achi8eve 16-bit resolution with high sampling rate. The first stage is a variable gain amplifier, the second stage is a sample and hold cell, the third stage is a track and hold amplifier, and the fourth stage is a 16-bit successive approximation register (SAR) analog to digital converter (ADC). In the first stage, the input signal is gain-amplified and then sent to the internal sample and hold cell. The second stage then samples the input signal at a frequency up to 10MS/s and holds it for completion of the ADC conversion in the third (hold) stage.

The fourth stage is the SAR architecture where the analog input is converted to its digital equivalent. This conversion is done by a sequence of comparison operations between the input voltage and a ramp voltage which is generated by a Digital to Analog Converter (DAC). The result of each comparison is stored in a register bit to form the digital output.

The MAX11644EUA+T presents an optimal solution for interface and data acquisition applications in embedded appliances, factory automation, distributed power systems, electronic load monitoring and other industrial applications. In addition to its advanced features and performance, it offers a choice of serial data output port interfaces, such as SPI, I2C and UART, to simplify communication design and reduce system cost.

The MAX11644EUA+T operates from a low supply voltage, and can manage wide range power and industrial process control applications. The device is especially suitable for use in embedded systems that require accurate and efficient data acquisition in a wide operating temperature range. In addition, the smaller package footprint and low power consumption result in significant cost savings for the system designer.

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