The DS1220 is a precision 24-bit analog-to-digital converter (ADC) that offers many features to reduce the cost of the integrated system and component count for small sensor signals. The device passes a flexible multiplexer input (MUX), low noise, programmable gain amplifier (PGA), two excitation current sources, a voltage reference, an oscillator, a low side switch and an accurate Temperature sensor for implement two differential or four single-ended inputs.The device can be converted to a data rate of 2000 samples per second (SPS) with a single precipitation cycle. At 20 SPs, the digital filter provides simultaneous 50Hz and 60Hz rejection for industrial applications noise.The internal PGA provides high gain at 128 V / V. The PGA makes the ADS1220 perfect for measuring small sensor signals such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.The device supports the measurement of pseudo or fully differential signals when using the programmable gate array. Alternatively, the device can be configured to pass through the internal PGA while still providing high input impedance and gain of up to 4 VnV, allowing single-ended measurements.In the duty cycle mode, when the PGA is disabled, the power consumption is as low as 120pa. The ADS1220 is available in a lead-free VQFN-16 or ATSSOP-16 package and is specified above the -40 to + 125 temperature range. K type of measuring thermocoupleLow current consumption: starting at 120A in duty cycle mode (typical)Power range: 3V ~ 5VUp to 20 effective resolutionsTwo differential or four single-ended inputsDual matched programmable current source: 10A to 1.5mAInternal 2.048V Reference: 5ppm / C (typical) DriftInternal 2% precision oscillatorInternal temperature sensor: 0.5 C (typical) precisionSPI compatible interface (mode 1)Applications:Measuring temperature sensor: