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ADS1278QML-SP

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ADC Delta-Sigma de muestreo simultáneo de 24 bits y 8 canales endurecido por radiación

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ADS1278QML-SP

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Detalles del producto

Resolution (Bits) 24 Sample rate (max) (ksps) 128 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Space Reference mode External Input voltage range (max) (V) 5 Input voltage range (min) (V) 0 Features Daisy-Chainable Operating temperature range (°C) -55 to 125 Power consumption (typ) (mW) 530 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 1.95
Resolution (Bits) 24 Sample rate (max) (ksps) 128 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating Space Reference mode External Input voltage range (max) (V) 5 Input voltage range (min) (V) 0 Features Daisy-Chainable Operating temperature range (°C) -55 to 125 Power consumption (typ) (mW) 530 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 1.95
— (—) — See data sheet
  • Radiation Hardened
    • TID Radiation Lot Acceptance Test (RLAT): 50krad
    • Single Event Latchup (SEL) Immune to LET: 51MeV-cm2/mg at 125°C
  • Simultaneously Samples Eight Channels
  • Up to 128kSPS Data Rate
  • AC Performance:
    • 63kHz 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: 128kSPS, 106dB SNR
    • High-Resolution: 52kSPS, 111dB SNR
    • Low-Power: 52kSPS, 31 mW/ch
    • Low-Speed: 10kSPS, 7 mW/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
  • Radiation Hardened
    • TID Radiation Lot Acceptance Test (RLAT): 50krad
    • Single Event Latchup (SEL) Immune to LET: 51MeV-cm2/mg at 125°C
  • Simultaneously Samples Eight Channels
  • Up to 128kSPS Data Rate
  • AC Performance:
    • 63kHz 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: 128kSPS, 106dB SNR
    • High-Resolution: 52kSPS, 111dB SNR
    • Low-Power: 52kSPS, 31 mW/ch
    • Low-Speed: 10kSPS, 7 mW/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

The ADS1278QML-SP is an 8-channel, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128k samples per second (SPS), allowing simultaneous sampling of eight channels.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, these ADCs have limited signal bandwidth and are mostly designed 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 ADS1278QML-SP combines 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 frequency with less than 0.005dB of ripple.

The ADS1278QML-SP is an 8-channel, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128k samples per second (SPS), allowing simultaneous sampling of eight channels.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, these ADCs have limited signal bandwidth and are mostly designed 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 ADS1278QML-SP combines 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 frequency with less than 0.005dB of ripple.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet ADS1278QML-SP Radiation Hardened 8-Ch Simultaneous-Sampling 24-Bit Analog-to-Digital Converter datasheet PDF | HTML 30 ene 2026
* Radiation & reliability report Single-Event Effects (SEE) Radiation Report of the ADS1278QML-SP PDF | HTML 22 may 2026
Application brief ADS1278-SP Power-On Reset Procedure (Rev. A) PDF | HTML 10 jul 2026
Application brief TI's Space Grade Precision ADCs in Laser Communication Terminals (Rev. A) PDF | HTML 09 jul 2026
Application note Space ADC Circuit Cookbook PDF | HTML 11 may 2026
Application brief DLA Approved Optimizations for QML Products (Rev. C) PDF | HTML 17 jun 2025
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B) PDF | HTML 10 jun 2025
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 20 feb 2025
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 mar 2023
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 19 oct 2022
Application brief Analog Front-End Design With Texas Instruments’ Tooling Landscape PDF | HTML 07 mar 2022
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19 jun 2020

Diseño y desarrollo

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