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ADS1118

AKTIV

16 bit, 860 SPS, 4-Kanal, Delta-Sigma-ADC mit PGA, Oszillator, VREF, Temperatursensor und SPI

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Datenblatt

ADS1118

AKTIV
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Produktdetails

Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA, Small Size, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply voltage (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 0.86 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, PGA, Small Size, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.3 Analog supply voltage (min) (V) 2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2 Digital supply (max) (V) 5.5
X2QFN (RUG) 10 3 mm² (1.5 mm × 2 mm) VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • Ultrasmall X2QFN Package:
    2 mm × 1.5 mm × 0.4 mm
  • Wide Supply Range: 2 V to 5.5 V
  • Low Current Consumption:
    • Continuous Mode: Only 150 µA
    • Single-Shot Mode: Automatic Power Down
  • Programmable Data Rate:
    8 SPS to 860 SPS
  • Single-Cycle Settling
  • 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
  • Ultrasmall X2QFN Package:
    2 mm × 1.5 mm × 0.4 mm
  • Wide Supply Range: 2 V to 5.5 V
  • Low Current Consumption:
    • Continuous Mode: Only 150 µA
    • Single-Shot Mode: Automatic Power Down
  • Programmable Data Rate:
    8 SPS to 860 SPS
  • Single-Cycle Settling
  • 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

The 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 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.

The 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 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.
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Technische Dokumentation

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* Datenblatt ADS1118 Ultrasmall, Low-Power, SPI-Compatible, 16-Bit Analog-to-Digital Converter with Internal Reference and Temperature Sensor datasheet (Rev. F) PDF | HTML 11.09.2019
Anwendungshinweis K-type thermocouple measurement circuit with precision ADC (Rev. A) PDF | HTML 20.09.2024
Circuit design Precision measurement circuit with 8 different channels and SPI (Rev. A) PDF | HTML 19.09.2024
Circuit design Two-channel, K-type thermocouple measurement circuit with internal temperature (Rev. A) PDF | HTML 18.09.2024
Anwendungshinweis Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18.03.2024
Anwendungshinweis QFN and SON PCB Attachment (Rev. C) PDF | HTML 06.12.2023
Anwendungshinweis Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29.03.2023
Anwendungshinweis A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 29.03.2023
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19.06.2020
Benutzerhandbuch 430BOOST-ADS1118 BoosterPack User's Guide (Rev. A) 20.07.2017
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19.09.2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19.03.2015
Analog Design Journal How delta-sigma ADCs work, Part 2 09.11.2011

Design und Entwicklung

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Evaluierungsplatine

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Firmware

SBAC121 — 430BOOST-ADS1118 Firmware

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Support-Software

ADS1118-C-EXAMPLE-CODE — ADS1118 example C code

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SBAC117 — ADS1118EVM Source Code

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ADS1118 IBIS Model

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Referenzdesign

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