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類比轉數位轉換器 (ADC)
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ADS1217

現行

8 通道 24 位元類比轉數位轉換器

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功能相似於所比較的產品。
ADS124S08 現行 適用於感測器量測且具有 PGA 和電壓參考的 24 位元、4-kSPS、12 通道 delta-sigma ADC Higher speed, 12 channel

ADS1217

現行
立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 0.78 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 24 Sample rate (max) (ksps) 0.78 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
TQFP (PFB) 48 81 mm² (9 mm × 9 mm)
  • 24 BITS NO MISSING CODES
  • INL: 0.0012% of FSR max
  • FULL-SCALE INPUT = ±2VREF
  • PGA FROM 1 TO 128
  • 22 BITS EFFECTIVE RESOLUTION (PGA =1), 19 BITS (PGA = 128)
  • SINGLE CYCLE SETTLING MODE
  • PROGRAMMABLE DATA OUTPUT RATES UP TO 1kHz
  • ON-CHIP 1.25V/2.5V REFERENCE
  • ON-CHIP CALIBRATION
  • SPI COMPATIBLE
  • POWER SUPPLY: 2.7V to 5.25V
  • < 1mW POWER CONSUMPTION, VDD = 3V
  • APPLICATIONS
    • INDUSTRIAL PROCESS CONTROL
    • LIQUID/GAS CHROMATOGRAPHY
    • BLOOD ANALYSIS
    • SMART TRANSMITTERS
    • PORTABLE INSTRUMENTATION
    • WEIGH SCALES
    • PRESSURE TRANSDUCERS

All trademarks are the property of their respective owners.
  • 24 BITS NO MISSING CODES
  • INL: 0.0012% of FSR max
  • FULL-SCALE INPUT = ±2VREF
  • PGA FROM 1 TO 128
  • 22 BITS EFFECTIVE RESOLUTION (PGA =1), 19 BITS (PGA = 128)
  • SINGLE CYCLE SETTLING MODE
  • PROGRAMMABLE DATA OUTPUT RATES UP TO 1kHz
  • ON-CHIP 1.25V/2.5V REFERENCE
  • ON-CHIP CALIBRATION
  • SPI COMPATIBLE
  • POWER SUPPLY: 2.7V to 5.25V
  • < 1mW POWER CONSUMPTION, VDD = 3V
  • APPLICATIONS
    • INDUSTRIAL PROCESS CONTROL
    • LIQUID/GAS CHROMATOGRAPHY
    • BLOOD ANALYSIS
    • SMART TRANSMITTERS
    • PORTABLE INSTRUMENTATION
    • WEIGH SCALES
    • PRESSURE TRANSDUCERS

All trademarks are the property of their respective owners.

The ADS1217 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution operating from 2.7V to 5.25V supplies. The delta-sigma, A/D converter provides up to 24 bits of no missing code performance and effective resolution of 22 bits.

The eight input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit Digital-to-Analog Converter (DAC) provides an offset correction with a range of 50% of the FSR (Full-Scale Range).

The PGA (Programmable Gain Amplifier) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a 2nd-order delta-sigma modulator and programmable sinc filter. The reference input is differential and can be used for ratiometric cancellation. The onboard current DACs operate independently with the maximum current set by an external resistor.

The serial interface is SPI compatible. Eight bits of digital I/O are also provided that can be used for input or output. The ADS1217 is designed for high-resolution measurement applications in smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.

The ADS1217 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution operating from 2.7V to 5.25V supplies. The delta-sigma, A/D converter provides up to 24 bits of no missing code performance and effective resolution of 22 bits.

The eight input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit Digital-to-Analog Converter (DAC) provides an offset correction with a range of 50% of the FSR (Full-Scale Range).

The PGA (Programmable Gain Amplifier) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a 2nd-order delta-sigma modulator and programmable sinc filter. The reference input is differential and can be used for ratiometric cancellation. The onboard current DACs operate independently with the maximum current set by an external resistor.

The serial interface is SPI compatible. Eight bits of digital I/O are also provided that can be used for input or output. The ADS1217 is designed for high-resolution measurement applications in smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 8-Channel, 24-Bit Analog-To-Digital Converter datasheet (Rev. C) 2007/2/28
應用說明 Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 2024/3/18
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
電子書 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020/6/19
應用說明 Measuring Temperature with the ADS1216, ADS1217, or ADS1218 (Rev. B) 2017/11/16
應用說明 Measuring Single-Ended 0V-5V Signals with Differential Delta-Sigma ADCs (Rev. A) 2015/5/18
應用說明 The Offset DAC (Rev. A) 2015/4/1
電子書 Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015/3/19
應用說明 Calibration Routines and Register Value Generation for the ADS121x Series 2003/6/19
應用說明 Inputs Currents for High-Resolution ADCs 2003/3/6

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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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設計工具

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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TQFP (PFB) 48 Ultra Librarian
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