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NEU ADS122S14 AKTIV Delta-Sigma-ADC, 8 Kanäle, 24 Bit, 64 kSPS, mit PGA, VREF, zwei IDACs und SPI Increased sampling rate up to 64-kSPS with improved performance and more channels (8) in a smaller package

Produktdetails

Resolution (Bits) 24 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal, Supply Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
Resolution (Bits) 24 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal, Supply Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
VQFN (RVA) 16 12.25 mm² (3.5 mm × 3.5 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Low current consumption:
    • As low as 120µA (typ) in duty-cycle mode
  • Wide supply range: 2.3V to 5.5V
  • Programmable gain: 1 to 128
  • Programmable data rates: Up to 2kSPS
  • Up to 20 Bits effective resolution
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    • 10µA to 1.5mA
  • Internal 2.048V reference: 5ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    • 0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)
  • Low current consumption:
    • As low as 120µA (typ) in duty-cycle mode
  • Wide supply range: 2.3V to 5.5V
  • Programmable gain: 1 to 128
  • Programmable data rates: Up to 2kSPS
  • Up to 20 Bits effective resolution
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    • 10µA to 1.5mA
  • Internal 2.048V reference: 5ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    • 0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)

The ADS1220 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS1220 designed for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4, allowing for single-ended measurements.

Power consumption is as low as 120µA when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

The ADS1220 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS1220 designed for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4, allowing for single-ended measurements.

Power consumption is as low as 120µA when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

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* Datenblatt ADS1220 4-Channel, 2kSPS, Low-Power, 24-Bit ADC With Integrated PGA and Reference datasheet (Rev. D) PDF | HTML 18.05.2026
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E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19.06.2020
Application brief Low-Cost, Single-Chip, Diff Temp Measurement Solution Using Delta-Sigma ADCs (Rev. A) 04.05.2018
Application brief Thermocouple Temperature Measurements Using Isolated Amplifiers (Rev. A) 11.08.2017
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Design und Entwicklung

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Evaluierungsplatine

ADS1220EVM — ADS1220 -Evaluierungsmodul

The ADS1220EVM is an evaluation system for the ADS1220, a 24-bit, multi-channel, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The EVM uses the ADS1220 along with minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS1220 are (...)

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PLABS-SAR-EVM-PDK — TI Precision Labs SAR ADC-Evaluierungsmodul-Leistungs-Demokit (PDK)

PLABS-SAR-EVM-PDK ist eine experimentelle Plattform, die in Verbindung mit TI Precision Labs-Videos verwendet wird, um ein tieferes Verständnis für SAR (Successive Approximation Register)-Schaltkreise von Analog-Digital-Wandlern (Analog-to-Digital Converter, ADC) zu erlangen. Die Plattform des (...)

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Anwendungssoftware und Frameworks

ADC-TEMP-SENSOR-FW — Temperature-sensor firmware source files

Diese Firmware zur Linearisierung von Temperatursensoren bietet eine Softwareroutine zur Messung und Linearisierung der meisten gebräuchlichen Temperatursensoren, einschließlich Widerstandstemperaturfühler (Resistance Temperature Detectors, RTDs), Thermoelemente, Thermistoren (NTC, PTC usw.) und (...)

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Support-Software

ADS1220-C-EXAMPLE-CODE — ADS1220 Example Code

Expedite your embedded design using this example C code for the ADS1220 product family
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Simulationsmodell

ADS1220 IBIS Model (Rev. A)

SBAM171A.ZIP (82 KB) - IBIS-Modell
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Berechnungstool

ADC-RTD-CONFIG-CALC — RTD Configuration Calculator for Precision ADCs

Dieser RTD-Konfigurationsrechner (Resistance Temperature Detector) ist ein Microsoft® Excel-basiertes Tool, das dem Benutzer hilft, eine Systemlösung für eine RTD-Anwendung zu identifizieren. Standardmäßig werden zwei-, drei- und vier-Draht-RTD-Konfigurationen angezeigt, wobei Optionen für (...)

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ADS1220-EXCEL-CALC — ADS1220 Excel™ calculator

The ADS1220 Excel™ calculator provides several easy-to-use tools for understanding the ADS1220 operation and accelerating time to market.
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Berechnungstool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

Der Rechner für Analogtechniker beschleunigt viele der sich wiederholenden Berechnungen, die Entwickler von analogen Schaltungsdesigns regelmäßig durchführen müssen. Dieses PC-basierte Tool bietet eine grafische Schnittstelle mit einer Liste verschiedener gebräuchlicher Berechnungen. Das Spektrum (...)

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Designtool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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Viele TI-Referenzdesigns beinhalten ADS1220

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VQFN (RVA) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian

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