USD

ADS124x Analog-to-Digital Converters

Texas Instruments offers the ADS124x 24-bit, 2 kSPS, analog-to-digital converters (ADCs) with programmable gain amplifier (PGA) for sensor measurement

Image of Texas Instruments' ADS124x Analog-to-Digital ConvertersTexas Instruments' ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit ADCs. The devices feature an onboard, low-noise, PGA, a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10 mA output capacity and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs).

An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50 Hz and 60 Hz interference are rejected by the filter.

Features
  • 24-bits, no missing codes
  • Programmable data rates up to 2 kSPS
  • Single-cycle settling for all data rates
  • Simultaneous 50 Hz and 60 Hz rejection at 20 SPS
  • Analog multiplexer with eight (ADS1248) and four (ADS1247) independently selectable inputs
  • Low-noise PGA: 48 nVRMS at PGA = 128
  • Dual-matched programmable excitation current sources
  • Low-drift internal 2.048 V reference: 10 ppm/°C (max)
  • Sensor burn-out detection
  • Four or eight general-purpose I/Os (ADS1247, ADS1248)
  • Internal temperature sensor
  • Power supply and VREF monitoring (ADS1247, ADS1248)
  • Self and system calibration
  • SPI-compatible
  • Analog supply: unipolar (2.7 V to 5.25 V) and bipolar (±2.5 V) operation
  • Digital supply: 2.7 V to 5.25 V
  • Operating temperature: -40°C to +125°C
Applications
  • Temperature sensor measurements:
    • RTDs, thermocouples, and thermistors
  • Pressure measurements
  • Flow meters
  • Factory automation and process controls

ADS124x Analog-to-Digital Converters

ImageManufacturer Part NumberDescriptionInput TypeAvailable QuantityView Details
IC ADC 24BIT SIGMA-DELTA 28TSSOPADS1248IPWRIC ADC 24BIT SIGMA-DELTA 28TSSOPDifferential, Single Ended0View Details
IC ADC 24BIT SIGMA-DELTA 28TSSOPADS1248IPWIC ADC 24BIT SIGMA-DELTA 28TSSOPDifferential, Single Ended899 - Immediate
10000 - Factory Stock
View Details
IC ADC 24BIT SIGMA-DELTA 20TSSOPADS1247IPWIC ADC 24BIT SIGMA-DELTA 20TSSOPDifferential, Single Ended1438 - Factory StockView Details
IC ADC 24BIT SIGMA-DELTA 20TSSOPADS1247IPWRIC ADC 24BIT SIGMA-DELTA 20TSSOPDifferential, Single Ended0View Details
IC ADC 24BIT SIGMA-DELTA 16TSSOPADS1246IPWIC ADC 24BIT SIGMA-DELTA 16TSSOPDifferential, Single Ended51 - Immediate
9990 - Factory Stock
View Details
IC ADC 24BIT SIGMA-DELTA 16TSSOPADS1246IPWRIC ADC 24BIT SIGMA-DELTA 16TSSOPDifferential, Single Ended0View Details

Evaluation Boards and Demo Kits

ImageManufacturer Part NumberDescriptionUtilized IC / PartSupplied ContentsAvailable QuantityView Details
EVAL MODULE FOR ADS1247ADS1247EVMEVAL MODULE FOR ADS1247ADS1247Board(s)0View Details
EVAL MODULE FOR ADS1246ADS1246EVMEVAL MODULE FOR ADS1246ADS1246Board(s)0View Details
KIT DEMO FOR ADS1246ADS1246EVM-PDKKIT DEMO FOR ADS1246ADS1246Board(s)0View Details
KIT DEMO FOR ADS1247ADS1247EVM-PDKKIT DEMO FOR ADS1247ADS1247Board(s)0View Details
KIT DEMO FOR ADS1248ADS1248EVM-PDKKIT DEMO FOR ADS1248ADS1248Board(s)0View Details
EVAL MODULE FOR ADS1248ADS1248EVMEVAL MODULE FOR ADS1248ADS1248Board(s)0View Details
Published: 2017-05-25