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類比轉數位轉換器 (ADC)
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ADS1278-EP

現行

強化型產品八 144kHz、同步取樣 24 位元 ΔΣ ADC

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產品規格表

ADS1278-EP

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating HiRel Enhanced Product Reference mode External Input voltage range (max) (V) 5.25 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) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 1.95
Resolution (Bits) 24 Sample rate (max) (ksps) 144 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Simultaneous Sampling Rating HiRel Enhanced Product Reference mode External Input voltage range (max) (V) 5.25 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) 5.25 SNR (dB) 111 Digital supply (min) (V) 1.65 Digital supply (max) (V) 1.95
HTQFP (PAP) 64 144 mm² 12 x 12
  • Simultaneously Measure Eight Channels
  • Up to 128-kSPS Data Rate
  • AC Performance:
    62-kHz Bandwidth
    111-dB SNR (High-Resolution Mode)
    –108-dB THD
  • DC Accuracy:
    0.8-µV/°C Offset Drift
    1.3-ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 128 kSPS, 106 dB SNR
    High-Resolution: 52 kSPS, 111 dB SNR
    Low-Power: 52 kSPS, 31 mW/ch
    Low-Speed: 10 kSPS, 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: 5 V
  • Digital Core: 1.8 V
  • I/O Supply: 1.8 V to 3.3 V
  • Currently Available in an HTQFP-64 PowerPAD package

SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS

  • Controlled Baseline
  • One Assembly/Test Site
  • One Fabrication Site
  • Available in Military (–55°C/125°C) Temperature Range(1)
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability
  • Simultaneously Measure Eight Channels
  • Up to 128-kSPS Data Rate
  • AC Performance:
    62-kHz Bandwidth
    111-dB SNR (High-Resolution Mode)
    –108-dB THD
  • DC Accuracy:
    0.8-µV/°C Offset Drift
    1.3-ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 128 kSPS, 106 dB SNR
    High-Resolution: 52 kSPS, 111 dB SNR
    Low-Power: 52 kSPS, 31 mW/ch
    Low-Speed: 10 kSPS, 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: 5 V
  • Digital Core: 1.8 V
  • I/O Supply: 1.8 V to 3.3 V
  • Currently Available in an HTQFP-64 PowerPAD package

SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS

  • Controlled Baseline
  • One Assembly/Test Site
  • One Fabrication Site
  • Available in Military (–55°C/125°C) Temperature Range(1)
  • Extended Product Life Cycle
  • Extended Product-Change Notification
  • Product Traceability

Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128 k 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, 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 ADS1278 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 rate with less than 0.005 dB 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 device is fully specified over the military temperature range (–55°C to 125°C) and is available in an HTQFP-64 PowerPAD package.

Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128 k 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, 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 ADS1278 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 rate with less than 0.005 dB 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 device is fully specified over the military temperature range (–55°C to 125°C) and is available in an HTQFP-64 PowerPAD package.
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重要文件 類型 標題 格式選項 日期
* Data sheet Octal Simultaneous-Sampling 24-Bit Analog-to-Digital Converter datasheet 2012年 9月 27日
* VID ADS1278-EP VID V6212600 2016年 6月 21日
* Radiation & reliability report ADS1278MPAPTEP Reliability Report 2014年 12月 22日
Application brief ADS1278-SP Power-On Reset Procedure PDF | HTML 2025年 3月 25日
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023年 3月 29日
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020年 6月 19日
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015年 3月 19日

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ADS1278EVM-PDK — ADS1278 評估模組

ADS1278EVM-PDK 為評估 ADS1278 性能的平台，而 ADS1278 是 24 位元、8 通道同時取樣 ΔΣ 類比數位轉換器 (ADC)。評估套件包含 ADS1278EVM 電路板和精密主機介面 (PHI) 控制器電路板，可讓隨附的電腦軟體透過 USB 與 ADC 通訊，以進行資料擷取與分析。
使用指南: PDF | HTML
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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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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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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HTQFP (PAP) 64 Ultra Librarian
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