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ADS8508

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具有串行接口 2.5V 内部基准的 12 位 250kHz CMOS 模数转换器

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ADS8508

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产品详情

Resolution (Bits) 12 Sample rate (max) (ksps) 250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 73 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 73 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm)
  • 250-kHz Sampling Rate
  • 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
  • 73-dB SINAD With 45-kHz Input
  • ±0.45 LSB Max INL
  • ±0.45 LSB Max DNL, 12-Bits No Missing Codes
  • ±1 LSB Bipolar Zero Errors
  • ±0.4 PPM/°C Bipolar Zero Error Drift
  • Six Specified Input Ranges
  • SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
  • 5-V Supply
  • Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809
  • Uses Internal or External Reference
  • 70-mW Typ Power Dissipation at 250 KSPS
  • 20-Pin SO Package
  • Simple DSP Interface
  • APPLICATIONS
    • Industrial Process Control
    • Data Acquisition Systems
    • Digital Signal Processing
    • Medical Equipment
    • Instrumentation
  • 250-kHz Sampling Rate
  • 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
  • 73-dB SINAD With 45-kHz Input
  • ±0.45 LSB Max INL
  • ±0.45 LSB Max DNL, 12-Bits No Missing Codes
  • ±1 LSB Bipolar Zero Errors
  • ±0.4 PPM/°C Bipolar Zero Error Drift
  • Six Specified Input Ranges
  • SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
  • 5-V Supply
  • Pin-Compatible With ADS7808 (Low Speed) and 16-Bit ADS8509/7809
  • Uses Internal or External Reference
  • 70-mW Typ Power Dissipation at 250 KSPS
  • 20-Pin SO Package
  • Simple DSP Interface
  • APPLICATIONS
    • Industrial Process Control
    • Data Acquisition Systems
    • Digital Signal Processing
    • Medical Equipment
    • Instrumentation

The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.

The ADS8508 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8508 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8508 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8508 is available in a 20-pin SO package, fully specified for operation over the industrial -40°C to 85°C temperature range.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 12-Bit 250-KSPS Serial CMOS Sampling ADC 数据表 2005-9-22
电子书 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015-5-21
应用手册 Determining Minimum Acquisition Times for SAR ADCs, part 2 2011-3-17
应用手册 Upgrading From ADS7808/09 to ADS8508/09 Devices 2007-6-12

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

仿真模型

ADS8508 IBIS Model

SLAM102.ZIP (40 KB) - IBIS 模型
支持的产品和硬件
计算工具

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

模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。

除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。

支持的产品和硬件
计算工具

JITTER-SNR-CALC — Jitter and SNR calculator

JITTER-SNR-CALC 可用于根据输入频率和时钟抖动来计算 ADC 的理论信噪比 (SNR) 性能。

支持的产品和硬件
设计工具

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.
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (DW) 20 Ultra Librarian
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