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ADS7817

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12 位差分输入微功耗采样模数转换器

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数据表

ADS7817

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产品详情

Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 1 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 200 Number of input channels 1 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.3 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • BIPOLAR INPUT RANGE
  • TRUE DIFFERENTIAL INPUT
  • 200kHz SAMPLING RATE
  • MICRO POWER: 2.3mW at 200kHz
  • POWER DOWN: 3uA Max
  • AVAILABLE IN MSOP-8 PACKAGE
  • SERIAL INTERFACE
  • AC COMMON-MODE REJECTION
  • APPLICATIONS
    • TRANSDUCER INTERFACE
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • AC MOTOR CONTROL
  • BIPOLAR INPUT RANGE
  • TRUE DIFFERENTIAL INPUT
  • 200kHz SAMPLING RATE
  • MICRO POWER: 2.3mW at 200kHz
  • POWER DOWN: 3uA Max
  • AVAILABLE IN MSOP-8 PACKAGE
  • SERIAL INTERFACE
  • AC COMMON-MODE REJECTION
  • APPLICATIONS
    • TRANSDUCER INTERFACE
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • AC MOTOR CONTROL

The ADS7817 is a 12-bit, 200kHz sampling Analog-to-Digital (A/D) converter that features a high impedance fully differential analog input. The reference voltage can be varied from 100mV to 2.5V, with a corresponding input-referred resolution between 49uV and 1.22mV.

The differential input, low power, automatic power down, and small size make the ADS7817 ideal for direct connection to transducers in battery operated systems, remote data acquisition, or multi-channel applications. The ADS7817 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.

The ADS7817 is a 12-bit, 200kHz sampling Analog-to-Digital (A/D) converter that features a high impedance fully differential analog input. The reference voltage can be varied from 100mV to 2.5V, with a corresponding input-referred resolution between 49uV and 1.22mV.

The differential input, low power, automatic power down, and small size make the ADS7817 ideal for direct connection to transducers in battery operated systems, remote data acquisition, or multi-channel applications. The ADS7817 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.
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ADS7816 正在供货 12 位高速微功耗采样模数转换器 (ADC) Single-ended input type

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 ADS7817: 12-Bit Differential Input Micro Power Sampling A/D Converter 数据表 (Rev. A) 2001-3-13
电子书 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015-5-21
应用手册 Coding Schemes Used with Data Converters (Rev. A) 2015-5-15
应用手册 Voltage Reference Scaling Techniques Increase Converter and Resolution Accuracy (Rev. A) 2015-5-8
应用手册 Determining Minimum Acquisition Times for SAR ADCs, part 2 2011-3-17
应用手册 Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 2010-11-10
应用手册 High-Voltage Signal Conditioning for Differential ADCs 2004-6-14
应用手册 Remove the DC Portion of Signals with the ADS7817 2000-9-27
应用手册 Interfacing the ADS7822 to synchronous serial port of the 80x51 Microcontroller 2000-9-27

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）。

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
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
VSSOP (DGK) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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