ADS1018IDGSR

The ADS1018 is a precision, low-power 12-bit noiseless analog-to-digital converter (ADC). This device comes in an ultra-small leadless X2QFN-10 package or an ultra-thin small outline package (VSSOP)-10, and has all the functions required to measure the most common sensor signals. The ADS1018 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 ADS1018 well-suited for power- and space-constrained sensor measurement application reference design solutions. The ADS1018 performs conversions at a data rate of up to 3300 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 to monitor system-level temperature or provide cold-junction compensation for thermocouples. The ADS1018 can be configured to operate in either continuous conversion mode or single-shot mode. In single-shot mode, the device automatically powers down after completing a conversion. In the idle state, single-shot mode significantly reduces current consumption. All data is transmitted via the serial peripheral interface (SPI).

Applications

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

Key features

• Ultra-compact X2QFN package, 2mm×1.5mm×0.4mm
• 12-bit noise-free resolution
• Wide supply voltage range: 2V to 5.5V
• Low current consumption: 150μA in continuous mode, auto power-down in single-shot mode
• Programmable data rate: 128SPS to 3300SPS
• Single-cycle settling
• Internal low-drift voltage reference
• Internal temperature sensor, 2°C (maximum) error
• Internal oscillator
• Internal programmable gain amplifier (PGA)
• Four single-ended or two differential inputs
• Specified temperature range: -40°C to +125°C