ANALOG DEVICES AD7170BCPZ-500RL7 Analogue to Digital Converter, 12 bit, Differential, 2 Wire, Serial, SPI, Single, 2.7 V

AD7170BCPZ-500RL7 is a very low-power 12-bit analogue-to-digital converter (ADC). It contains a precision 12-bit sigma-delta (?-?) ADC and an on-chip oscillator. It consumes only 135?A, the AD7170 is particularly suitable for portable or battery-operated products where very low power is a requirement. It also has a power-down mode in which the device consumes 5?A, thus increasing the battery life of the product. For ease of use, all the features of the AD7170 are controlled by dedicated pins. Each time a data read occurs, eight status bits are appended to the 12-bit conversion. These status bits contain a pattern sequence that can be used to confirm the validity of the serial transfer. The output data rate of the AD7170 is 125Hz, whereas the settling time is 24ms. It has one differential input and a gain of 1. It is used in applications such as pressure measurement, industrial process control, and portable instrumentation.

• Pin-programmable power-down and reset
• Status function, internal clock oscillator
• Power supply voltage range from 2.7V to 5.25V
• 2-wire serial (read-only device), SPI compatible, schmitt trigger on SCLK
• Integral nonlinearity is ±0.1LSB typical at (VDD = 2.7V to 5.25V)
• Offset error drift vs. temperature is ±250nV/°C typical at (VDD = 2.7V to 5.25V)
• Power supply rejection ratio is 85dB typical at (VDD = 2.7V to 5.25V)
• IDD current is 110µA typical at (VDD = 3V, VDD = 2.7V to 5.25V)
• Offset error is ±200µV typical at (VDD = 2.7V to 5.25V)
• Operating temperature range from -40°C to +105°C, 10-lead LFCSP-WD package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party