AD7817BRZ

AD7817BRZ is a 10bit, single- and 4-channel analogue-to-digital converter (ADC) with an on-chip temperature sensor. It 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 device 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 has a flexible serial interface that allows easy interfacing to most microcontrollers. It is used in applications such as data acquisition systems with ambient temperature monitoring, industrial process control, automotive, battery charging applications.

• 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 (VDD = 2.7V to 5.5V, GND = 0V)
• Total harmonic distortion is -65dB maximum at (VDD = 2.7V to 5.5V, GND = 0V)
• Resolution is 10bits, relative accuracy is ±1LSB maximum at (VDD = 2.7V to 5.5V)
• Differential nonlinearity is ±1LSB maximum at (VDD = 2.7V to 5.5V, GND = 0V, REFIN = 2.5V)
• Temperature coefficient is 80ppm/°C typical at (VDD = 2.7V to 5.5V, GND = 0V, REFIN = 2.5V)
• Track-and-hold acquisition time is 400ns maximum at (VDD = 2.7V to 5.5V, GND = 0V, REFIN = 2.5V)
• Input capacitance is 10pF maximum at ((VDD = 2.7V to 5.5V, GND = 0V, REFIN = 2.5V)
• Operating temperature range from -40°C to +85°C, 16-lead SOIC-N package

附註

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