AD7814ARMZ

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The AD7814 ARMZ is a programmable, analog-to-digital converter (ADC) based on the IntelliSense® algorithm for temperature measurement with an output of either an analog voltage or digital data. It is designed for applications requiring temperature accuracy and stability to within ±0.75°C. The ARMZ offers the convenience of a low-power, low-skew, high-sample-rate sensor system that is tailored to specific applications. This device has been designed for applications such as automotive engine temperature sensing, hard drive temperature monitoring, industrial process control, and medical monitoring.

The ADC of the ARMZ has a ±2.5V operating range and a resolution of 12 bits. The ADC input is a voltage signal that corresponds to the measured temperature. In addition, the ARMZ has an integrated temperature sensor that provides a secondary temperature output signal which is independent of the voltage input signal. This allows for a direct comparison between the sensor\'s temperature output and the target object\'s temperature value without the need for any external circuitry.

The ARMZ\'s digital output is compatible with the SPI and I2C communications protocol. This allows for direct interface with different microcontrollers and other digital circuits. The digital output signal consists of a serial, 8-bit double data rate (DDR) signal in which each data bit describes a unique attribute of the temperature, such as the measured value, alarm values, temperature resolution, or any other set parameters.

The analog output of the ARMZ is a voltage signal whose values correspond to the measured temperature when it is set up as a 4-code thermostat. The voltage signal is configured using a series of switches, starting from -2.5V to +2.5V in 0.25V increments, allowing for the accurate monitoring of temperatures in the range of 0°C to 130°C. The analog output can be used for applications such as medical or process control.

The ARMZ is compatible with a wide range of temperature sensors including thermocouples, RTDs, and thermistors. The ARMZ has been designed with an average power consumption of only 24mW, which makes it one of the most energy efficient ADCs on the market. In addition, the ARMZ has a high speed sampling mode of up to 10kHz, which improves accuracy and allows for faster response times.

In summary, the AD7814 ARMZ offers an economical and easily configurable solution for temperature sensing, with options for either analog or digital output. The wide range of supported temperature sensors, low power consumption, and high sample rate make the ARMZ suitable for applications such as automotive engine temperature sensing, industrial process control, and medical monitoring.

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