ADS1119 - 16-bit, 1kSPS, 4-ch general-purpose delta-sigma ADC with I2C interface and external Vref inputs

Updated : 2020-01-09 14:29:09
Description

The ADS1119 is a precision, 16-bit,analog-to-digital converter (ADC) that includes all features necessary to implement the most commonsystem monitoring functions, such as supply voltage, current, and temperature monitoring. Thedevice features two differential or four single-ended inputs through a flexible input multiplexer(MUX), rail-to-rail input buffers, a programmable gain stage, a voltage reference, and anoscillator.

The device includes buffers that allow high-impedance sources to be directly connected tothe device. A gain stage follows the buffers which provides selectable gains of 1 and 4. TheADS1119 can perform conversions at data rates as high as 1000 samples persecond (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hzand 60-Hz rejection for noisy industrial applications.

The ADS1119 features a 2-wire,I2C-compatible interface that supports I2Cbus speeds up to 1 Mbps. 16 different I2C addresses can be selected forthe device via two address pins.

The ADS1119 is offered in a leadless 16-pin WQFN or a 16-pin TSSOPpackage and is specified over a temperature range of –40°C to +125°C.

Products containing the "ADS1119" keyword are: ADS1119IPW , ADS1119IPW , ADS1119IPWR , ADS1119IPWR , ADS1119IPWT , ADS1119IPWT , ADS1119IRTER , ADS1119IRTET
Features

  • Easy to Use With Only One Register to Program
  • Current Consumption as Low as 315 µA (typ)
  • Wide Supply Range: 2.3 V to 5.5 V
  • Rail-to-Rail Input Buffers to Achieve High Input Impedance
  • Programmable Gains: 1 and 4
  • Programmable Data Rates: Up to 1 kSPS
  • 16-Bit, Noise-Free Resolution at 20 SPS
  • Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital Filter
  • Two Differential or Four Single-Ended Inputs
  • Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
  • Internal 2% Accurate Oscillator
  • I2C-Compatible Interface
  • Supported I2C Bus Speed Modes:
    Standard-Mode, Fast-Mode, Fast-Mode Plus
  • 16 Pin-Configurable I2C Addresses
  • Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN

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