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ADS7861

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双通道 500kHz 12 位 2+2 通道同步采样模数转换器

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ADS7861

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产品详情

Resolution (Bits) 12 Sample rate (max) (ksps) 500 Number of input channels 4 Interface type SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 25 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 500 Number of input channels 4 Interface type SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 25 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 4.75 Digital supply (max) (V) 5.25
SSOP (DBQ) 24 51.9 mm² (8.65 mm × 6 mm) VQFN (RHB) 32 25 mm² (5 mm × 5 mm)
  • 4 INPUT CHANNELS
  • FULLY DIFFERENTIAL INPUTS
  • 2µs TOTAL THROUGHPUT PER CHANNEL
  • NO MISSING CODES
  • 1MHz EFFECTIVE SAMPLING RATE
  • LOW POWER: 40mW
  • SSI SERIAL INTERFACE
  • OPERATING TEMPERATURE RANGE: 40°C to +125°C
  • APPLICATIONS
    • MOTOR CONTROL
    • MULTI-AXIS POSITIONING SYSTEMS
    • 3-PHASE POWER CONTROL

All trademarks are the property of their respective owners.
  • 4 INPUT CHANNELS
  • FULLY DIFFERENTIAL INPUTS
  • 2µs TOTAL THROUGHPUT PER CHANNEL
  • NO MISSING CODES
  • 1MHz EFFECTIVE SAMPLING RATE
  • LOW POWER: 40mW
  • SSI SERIAL INTERFACE
  • OPERATING TEMPERATURE RANGE: 40°C to +125°C
  • APPLICATIONS
    • MOTOR CONTROL
    • MULTI-AXIS POSITIONING SYSTEMS
    • 3-PHASE POWER CONTROL

All trademarks are the property of their respective owners.

The ADS7861 is a dual, 12-bit, 500kHz, Analog-to-Digital (A/D) converter with four fully differential input channels grouped into two pairs for high speed, simultaneous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained differential to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz which is important in high noise environments.

The ADS7861 offers a high-speed, dual serial interface and control inputs to minimize software overhead. The output data for each channel is available as a 12-bit word. The ADS7861 is offered in both an SSOP-24 and a QFN-32 package and is fully specified over the -40°C to +125°C operating range.

The ADS7861 is a dual, 12-bit, 500kHz, Analog-to-Digital (A/D) converter with four fully differential input channels grouped into two pairs for high speed, simultaneous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained differential to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz which is important in high noise environments.

The ADS7861 offers a high-speed, dual serial interface and control inputs to minimize software overhead. The output data for each channel is available as a 12-bit word. The ADS7861 is offered in both an SSOP-24 and a QFN-32 package and is fully specified over the -40°C to +125°C operating 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 Dual, 500kSPS,12-Bit, 2+2 Channel Simultaneous Sampling Analog/Digital Converter 数据表 (Rev. D) 2007-8-14
电子书 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015-5-21
应用手册 Using a SAR A/D Converter for Current Measurement in Motor Control Applications (Rev. A) 2015-5-18
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
用户指南 5-6 K Interface Board User's Guide (Rev. C) 2009-3-20
应用手册 Interfacing the ADS786x to TMS470 Processors 2006-7-10
应用手册 Interfacing the ADS786x to the MSP430F2013 2006-6-15

设计与开发

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评估板

5-6KINTERFACE — 5-6K 接口式评估模块

接口板由两个信号调节站点、两个串行 EVM 站点和一个并行 EVM 站点组成。无论接口类型如何，与 5-6K 接口板兼容的所有 EVM 都具有标准模拟接口和标准电源连接器。三位螺丝端子 J1 和 J2 以及两位螺丝端子 J6、J8、J9 和 J11 可接入连接至所有站点的公共电源总线

5-6K 接口板旨在为数据转换器客户提供最大的灵活性、以便评估德州仪器 (TI) 的数据采集产品。根据 TMS320 跨平台子卡规范 (SPRA711) 中规定的指南，接口板保持与 TMS320 系列数字信号处理器 (DSP) 的兼容接口

该 EVM 是一款电路板，使设计者能够将该电路板与 TI 的 DSK (...)

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评估板

ADS8361EVM — ADS8361 评估模块

The ADS8361EVM uses a circuit board designated ADS78-8361EVM. This EVM board will accept either the ADS7861 (12bit) or the ADS8361 (16bit) ADC. The ADS7861 operates from 5 volts to supply AVdd & DVdd, while the ADS8361 operates from 2.7V to 3.6V to supply AVdd & DVdd. The evaluation board has a (...)

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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.
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SSOP (DBQ) 24 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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