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Convertidores analógico-digitales (ADC)
ADC de precisión

ADS1274

ACTIVO

ADC Delta-Sigma de muestreo simultáneo de 24 bits, 144 kSPS y 4 canales para aplicaciones de ancho d

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ADS127L18 ACTIVO ADC delta-sigma de 24 bits, banda ancha, 512 kSPS, ocho canales y muestreo simultáneo Higher sampling rate (512 kSPS), higher channel count (8)

ADS1274

ACTIVO
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Detalles del producto

Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 275 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 2.2
Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 275 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 2.2
HTQFP (PAP) 64 144 mm² (12 mm × 12 mm)
  • Simultaneously Measure Four/Eight Channels
  • Up to 144kSPS Data Rate
  • AC Performance:
    70kHz Bandwidth
    111dB SNR (High-Resolution Mode)
    –108dB THD
  • DC Accuracy:
    0.8µV/°C Offset Drift
    1.3ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 144kSPS, 106dB SNR
    High-Resolution: 52kSPS, 111dB SNR
    Low-Power: 52kSPS, 31mW/ch
    Low-Speed: 10kSPS, 7mW/ch
  • Linear Phase Digital Filter
  • SPI™ or Frame-Sync Serial Interface
  • Low Sampling Aperture Error
  • Modulator Output Option (digital filter bypass)
  • Analog Supply: 5V
  • Digital Core: 1.8V
  • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

    PowerPAD is a trademark of Texas Instruments, Inc.
    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.
    • Simultaneously Measure Four/Eight Channels
    • Up to 144kSPS Data Rate
    • AC Performance:
      70kHz Bandwidth
      111dB SNR (High-Resolution Mode)
      –108dB THD
    • DC Accuracy:
      0.8µV/°C Offset Drift
      1.3ppm/°C Gain Drift
    • Selectable Operating Modes:
      High-Speed: 144kSPS, 106dB SNR
      High-Resolution: 52kSPS, 111dB SNR
      Low-Power: 52kSPS, 31mW/ch
      Low-Speed: 10kSPS, 7mW/ch
    • Linear Phase Digital Filter
    • SPI™ or Frame-Sync Serial Interface
    • Low Sampling Aperture Error
    • Modulator Output Option (digital filter bypass)
    • Analog Supply: 5V
    • Digital Core: 1.8V
    • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

    PowerPAD is a trademark of Texas Instruments, Inc.
    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

    Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

    The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

    Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.

    Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

    Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

    The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

    Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.
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    Documentación técnica

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    Ver todo 6
    Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
    * Hoja de datos Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters datasheet (Rev. F) 17/02/2011
    Application brief ADS1278QML-SP Power-On Reset Procedure (Rev. A) PDF | HTML 10/07/2026
    Nota sobre la aplicación Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29/03/2023
    Libro electrónico Fundamentals of Precision ADC Noise Analysis (Rev. A) 19/06/2020
    Informe Voltage-reference impact on total harmonic distortion 1/08/2016
    Libro electrónico Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19/03/2015

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