ADS1118 Ultra-Small Precision ADC

Texas Instruments' 16-bit, precision analog-to-digital converter (ADC) with integrated MUX, PGA, temperature sensor, oscillator, and reference

Image of Texas Instruments' ADS1118 Ultra-Small Precision ADC Texas Instruments' ADS1118 is a precision, low power, 16-bit analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals. The ADC comes in an ultra-small, leadless X2QFN-10 package or a VSSOP-10 package. The ADS1118 integrates a programmable gain amplifier (PGA), voltage reference, oscillator and high-accuracy temperature sensor. These features, along with a wide power supply range from 2 V to 5.5 V, make the ADS1118 ideally suited for power- and space-constrained, sensor-measurement applications.

The ADS1118 can perform conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing both large and small signals to be measured with high resolution. An input multiplexer (MUX) allows to measure two differential or four single-ended inputs. The high-accuracy temperature sensor can be used for system-level temperature monitoring or cold-junction compensation for thermocouples.

The ADS1118 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI). The ADS1118 is specified from -40°C to 125°C.

Features
  • Ultra-small QFN package: 2 mm x 1.5 mm x 0.4 mm
  • Wide supply range: 2 V to 5.5 V
  • Low current consumption:
    • Continuous mode: only 150 µA
    • Single-shot mode: auto power down
  • Programmable data rate: 8 SPS to 860 SPS
  • Single-cycle setting
  • Internal low-drift voltage reference
  • Internal temperature sensor:
    • 0.5°C (maximum) Error: 0°C to 70°C
  • Internal oscillator
  • Internal PGA
  • Four single-ended or two differential inputs
Applications
  • Temperature measurement:
    • Thermocouple measurement
    • Cold Junction compensation
    • Thermistor measurement
  • Portable instrumentation
  • Industrial process control
  • Battery monitoring

ADS1118 Ultra-Small Precision ADC

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
ADS1118IRUGR datasheet linkIC ADC 16BIT SPI 860SPS 10X2QFNADS1118IRUGRIC ADC 16BIT SPI 860SPS 10X2QFN13271 - Immediate
ADS1118IRUGR product page link
ADS1118IDGSR datasheet linkIC ADC 16BIT SPI 860SPS 10MSOPADS1118IDGSRIC ADC 16BIT SPI 860SPS 10MSOP9214 - Immediate
ADS1118IDGSR product page link
ADS1118QDGSRQ1 datasheet linkIC ADC 16BIT SPI 860SPSADS1118QDGSRQ1IC ADC 16BIT SPI 860SPS5480 - Immediate
ADS1118QDGSRQ1 product page link
ADS1118IDGST datasheet linkIC ADC 16BIT SPI 860SPS 10MSOPADS1118IDGSTIC ADC 16BIT SPI 860SPS 10MSOP4881 - Immediate
ADS1118IDGST product page link
ADS1118IRUGT datasheet linkIC ADC 16BIT SPI 860SPS 10X2QFNADS1118IRUGTIC ADC 16BIT SPI 860SPS 10X2QFN1404 - Immediate
ADS1118IRUGT product page link

Evaluation Module

ImageManufacturer Part NumberDescriptionSensor TypeInterfaceAvailable QuantityView Details
ADS1118EVM datasheet linkEVAL MODULE FOR ADS1118ADS1118EVMEVAL MODULE FOR ADS1118TemperatureSPI, USB9 - Immediate
4 - Factory Stock
ADS1118EVM product page link
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Published: 2013-07-02