AD7817ARZ

AD7817ARZ is a 10-bit, analogue-to-digital converter (ADC) with an on-chip temperature sensor that can operate from a single 2.7V to 5.5V power supply. This device contains a 9μs successive approximation converter based around a capacitor digital-to-analogue converter (DAC), an on-chip temperature sensor with an accuracy of ±2°C, an on-chip clock oscillator, inherent track-and-hold functionality, and an on-chip reference (2.5V). The on-chip temperature sensor of the AD7817 can be accessed via channel 0. When channel 0 is selected and a conversion is initiated, the resulting ADC code at the end of the conversion gives a measurement of the ambient temperature with a resolution of ±0.25°C. It is used in applications such as data acquisition systems with ambient temperature monitoring, industrial process control, and automotive, battery charging applications.

• 4 single-ended analogue input channels
• Wide operating supply range from 2.7V to 5.5V
• Inherent track-and-hold functionality, overtemperature indicator
• Automatic power-down at the end of a conversion, flexible serial interface
• Signal-to-(noise + distortion) ratio is 58dB minimum at (TA = 85°C)
• Relative accuracy is ±1LSB maximum at (VDD = 2.7V, TA = 85°C)
• Differential nonlinearity is ±1LSB maximum at (VDD = 2.7V, TA = 85°C)
• Temperature coefficient 80ppm/°C typical at (VDD = 2.7V, TA = 85°C)
• Total harmonic distortion is -65dB maximum at (VDD = 2.7V, TA = 85°C)
• Operating temperature range from -40°C to +85°C, 16-lead SOIC-N package

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