TI ADS1118IRUGT

The ADS1118 is a precision, low-power, 16-bit analog-to-digital converter (ADC) that provides all the functions required to measure the most common signals from sensors in ultra-small leadless X2QFN-10 or VSSOP-10 packages. The ADS1118 integrates a programmable gain amplifier (PGA), a voltage reference, an oscillator, and a high-precision temperature sensor. These features, along with a wide power supply voltage range of 2V to 5.5V, make the ADS1118 well-suited for power- and space-constrained sensor measurement applications. The ADS1118 can achieve a maximum data conversion rate of 860 samples per second (SPS). The PGA has an input range of ±256mV to ±6.144V, enabling high-resolution measurement of both large and small signals. The device measures dual differential inputs or four single-ended inputs through an input multiplexer (MUX). The high-precision temperature sensor is used for system-level temperature monitoring or cold-junction compensation of thermocouples. The ADS1118 can be configured to operate in either continuous conversion mode or single-shot mode. The device automatically powers down after completing a conversion in single-shot mode. In the idle state, single-shot mode significantly reduces current consumption. All data is transmitted via a serial peripheral interface (SPI). The ADS1118 is rated for an operating temperature range of -40°C to +125°C.

• Ultra-compact X2QFN package: 2mm × 1.5mm × 0.4mm
• Wide supply voltage range: 2V to 5.5V
• Low current consumption: Continuous mode: only 150μA; Single-shot mode: auto power-down
• Programmable data rate: 8SPS to 860SPS
• Single-cycle settling
• Internal low-drift voltage reference
• Internal temperature sensor: max error 0.5°C over 0°C to 70°C range
• Internal oscillator
• Internal programmable gain amplifier (PGA)
• Four single-ended or two differential inputs

• Temperature measurement: thermocouple measurement, cold junction compensation, thermistor measurement
• Portable instruments
• Factory automation and process control