Produktdetails

Resolution (Bits) 16 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) 16 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
  • 16-bit noise-free resolution at 20SPS
  • 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:
    • 50µA 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
  • 16-bit noise-free resolution at 20SPS
  • 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:
    • 50µA 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 ADS1120 is a precision, 16-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 ADS1120 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 ADS1120 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 ADS1120 is a precision, 16-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 ADS1120 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 ADS1120 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt ADS1120 4-Channel, 2kSPS, Low-Power, 16-Bit ADC With Integrated PGA and Reference datasheet (Rev. D) PDF | HTML 10.06.2026
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E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19.06.2020
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E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19.03.2015
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Design und Entwicklung

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