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ADS1278QML-SP

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Strahlungsgehärteter Delta-Sigma A/D-W (24 Bit, 8 Kanäle) mit Simultanabtastung

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ADS1278QML-SP

AKTIV
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Produktdetails

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) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable Operating temperature range (°C) 25 to 25 Power consumption (typ) (mW) 530 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) 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) 5.25 Input voltage range (min) (V) 0 Features Daisy-Chainable Operating temperature range (°C) 25 to 25 Power consumption (typ) (mW) 530 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
— (—) — 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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* Data sheet ADS1278QML-SP Radiation Hardened 8-Ch Simultaneous-Sampling 24-Bit Analog-to-Digital Converter datasheet PDF | HTML 30 Jan 2026

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