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ADS7869

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12 通道 7 路采样模拟电机控制前端，具有 3 个 1MSPS 12 位 ADC

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ADS7869

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产品详情

Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 12 Interface type Parallel, SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 250 Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 12 Interface type Parallel, SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 250 Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
TQFP (PZT) 100 256 mm² (16 mm × 16 mm)
  • Seven Simultaneously-Sampling Sample-and-Hold (S/H) Capacitors
  • Fully Differential Inputs
  • Flexible Digital Interface with Four Modes
    • One Mode 100% Software-Compatible to VECANA01
    • SPI and Two Parallel Modes
  • Two Up-Down Counter Modules On-Chip
  • 12-Bit System Gain Adjustment for Every Channel
  • 12-Bit Accurate System Offset Adjustment for Every Channel
  • APPLICATIONS
    • Motor Control
  • Seven Simultaneously-Sampling Sample-and-Hold (S/H) Capacitors
  • Fully Differential Inputs
  • Flexible Digital Interface with Four Modes
    • One Mode 100% Software-Compatible to VECANA01
    • SPI and Two Parallel Modes
  • Two Up-Down Counter Modules On-Chip
  • 12-Bit System Gain Adjustment for Every Channel
  • 12-Bit Accurate System Offset Adjustment for Every Channel
  • APPLICATIONS
    • Motor Control

The ADS7869 is a motor-control front-end that includes three analog-to-digital converters (ADCs) with a total of seven sample-and-hold capacitors and 12 fully differential input channels. There are four sign comparators connected to four input channels. There are also three additional fully differential inputs; each input is connected to a window comparator and a sign comparator.

In addition, the ADS7869 also offers a very flexible digital interface with a parallel port that can be configured to different standards. Furthermore, a serial peripheral interface (SPI) and a specialized serial interface with three data lines (VECANA01 mode) are provided. This allows the ADS7869 to interface with most digital signal processors (DSPs) or microcontrollers. The chip is specialized for motor-control applications. For the position sensor analysis, two up-down counters are added on the silicon. This feature ensures that the analog input of the encoder is held at the same point of time as the counter value.

The ADS7869 is a motor-control front-end that includes three analog-to-digital converters (ADCs) with a total of seven sample-and-hold capacitors and 12 fully differential input channels. There are four sign comparators connected to four input channels. There are also three additional fully differential inputs; each input is connected to a window comparator and a sign comparator.

In addition, the ADS7869 also offers a very flexible digital interface with a parallel port that can be configured to different standards. Furthermore, a serial peripheral interface (SPI) and a specialized serial interface with three data lines (VECANA01 mode) are provided. This allows the ADS7869 to interface with most digital signal processors (DSPs) or microcontrollers. The chip is specialized for motor-control applications. For the position sensor analysis, two up-down counters are added on the silicon. This feature ensures that the analog input of the encoder is held at the same point of time as the counter value.
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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 Analog Motor Control Front-End with Simultaneous Sampling on Seven 数据表 (Rev. E) 2006-7-25
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 Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 2010-11-10
应用手册 Using the ADS7869 Reference Design Evaluation Module 2005-10-26

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

ADS7869 IBIS Model

SBAM119.ZIP (78 KB) - IBIS 模型
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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.
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光绘文件

ADS7869 Gerber files

SLAC113.ZIP (151 KB) - 光绘文件
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
TQFP (PZT) 100 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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