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集成型和特殊功能数据转换器
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超声波 AFE

AFE5851

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具有模数转换器 (ADC) 的 16 通道 VGA

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AFE5851

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产品详情

Device type Receiver Number of input channels 16 Active supply current (typ) (mA) 4.7 Operating temperature range (°C) -40 to 85 Interface type Serial LVDS Features Analog Front End (AFE) Rating Catalog
Device type Receiver Number of input channels 16 Active supply current (typ) (mA) 4.7 Operating temperature range (°C) -40 to 85 Interface type Serial LVDS Features Analog Front End (AFE) Rating Catalog
VQFN (RGC) 64 81 mm² (9 mm × 9 mm)
  • 16 Variable Gain Amplifiers (VGA)
    • 16 Single-Ended Buffered Inputs With 1VPP Maximum Swing
    • 5.5nV/√Hz VCA Input Noise (31dB Gain).
    • Variable Gain –5dB to 31dB With 0.125dB Steps
    • Digital Gain Control
  • 3rd Order Anti-Aliasing Filter With Programmable Cut-Off Frequency (7.5, 10 and 14MHz).
  • Clamping
  • Analog-to-Digital Converter (ADC)
    • Octal channel 12-bit, 65 MSPS
    • 32.5 MSPS Maximum per Input Channel
    • 2 VGA Outputs Alternately Sampled by Each ADC
    • Internal and External Reference Support
    • No External Decoupling Required for References
    • Serial LVDS Outputs
  • 1.8V and 3.3V Supply
  • 39 mW Total Power per Channel at 32.5 MSPS
  • 64-QFN Package (9mm × 9mm)
  • APPLICATIONS
    • Imaging: Ultrasound, PET
  • RELATED DEVICES
    • AFE5801: Octal VGA+ADC, 65 MSPS/channel
  • 16 Variable Gain Amplifiers (VGA)
    • 16 Single-Ended Buffered Inputs With 1VPP Maximum Swing
    • 5.5nV/√Hz VCA Input Noise (31dB Gain).
    • Variable Gain –5dB to 31dB With 0.125dB Steps
    • Digital Gain Control
  • 3rd Order Anti-Aliasing Filter With Programmable Cut-Off Frequency (7.5, 10 and 14MHz).
  • Clamping
  • Analog-to-Digital Converter (ADC)
    • Octal channel 12-bit, 65 MSPS
    • 32.5 MSPS Maximum per Input Channel
    • 2 VGA Outputs Alternately Sampled by Each ADC
    • Internal and External Reference Support
    • No External Decoupling Required for References
    • Serial LVDS Outputs
  • 1.8V and 3.3V Supply
  • 39 mW Total Power per Channel at 32.5 MSPS
  • 64-QFN Package (9mm × 9mm)
  • APPLICATIONS
    • Imaging: Ultrasound, PET
  • RELATED DEVICES
    • AFE5801: Octal VGA+ADC, 65 MSPS/channel

The AFE5851 is an analog front-end targeting applications where the power and level of integration are critical. The device contains 16 variable gain amplifiers (VGA), followed by an octal high speed (up to 65 MSPS) analog to digital converter (ADC).

Each of the 16 single ended inputs is buffered, accepts up to 1VPP maximum input swing and it is followed by a VGA with a gain range from –5dB to 31dB. The VGA gain is digitally controlled and the gain curves versus time can be stored in memory, integrated within the device using the serial interface.

A selectable clamping and anti-alias low pass filter (with 3dB attenuation at 7.5, 10 or 14MHz) is also integrated between the VGA and ADC for every channel. The VGA/anti-alias filter outputs are differential (limited to 2 VPP) and drive the on-board 12-bit 65MSPS ADC that is shared between two VGAs to optimize the power dissipation. Each VGA output is sampled at alternate clock cycles, making the effective sampling frequency half the input clock rate. The ADC also scales down its power consumption should a lower sampling rate be selected.

The ADC outputs are serialized in LVDS streams further minimizing power and board area. The AFE5851 is available in a 64-pin QFN package (9x9mm2) and is specified over the full industrial temperature range (–40°C to 85°C).

The AFE5851 is an analog front-end targeting applications where the power and level of integration are critical. The device contains 16 variable gain amplifiers (VGA), followed by an octal high speed (up to 65 MSPS) analog to digital converter (ADC).

Each of the 16 single ended inputs is buffered, accepts up to 1VPP maximum input swing and it is followed by a VGA with a gain range from –5dB to 31dB. The VGA gain is digitally controlled and the gain curves versus time can be stored in memory, integrated within the device using the serial interface.

A selectable clamping and anti-alias low pass filter (with 3dB attenuation at 7.5, 10 or 14MHz) is also integrated between the VGA and ADC for every channel. The VGA/anti-alias filter outputs are differential (limited to 2 VPP) and drive the on-board 12-bit 65MSPS ADC that is shared between two VGAs to optimize the power dissipation. Each VGA output is sampled at alternate clock cycles, making the effective sampling frequency half the input clock rate. The ADC also scales down its power consumption should a lower sampling rate be selected.

The ADC outputs are serialized in LVDS streams further minimizing power and board area. The AFE5851 is available in a 64-pin QFN package (9x9mm2) and is specified over the full industrial temperature range (–40°C to 85°C).
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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 16 CHANNEL VARIABLE GAIN AMPLIFIER (VGA) WITH OCTAL HIGH SPEED ADC 数据表 (Rev. B) 2010-5-3
用户指南 AFE5851 16-Channel Variable Gain Ampl w/Octal High-Speed ADC (Rev. C) 2015-3-5
用户指南 TSW1250EVM: High-Speed LVDS Deserializer and Analysis System (Rev. F) 2012-1-20
更多文献资料 Ultrasound flyer (Rev. A) 2011-9-22

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）。

评估板

AFE5851EVM — AFE5851 评估模块

AFE5851 将 16 通道压控放大器 (VCA) 与数字控制及 8 通道 65MSPS 模数转换器 (ADC) 集成在一起。16 模拟输入信号由 AFE5851 的模拟前端电路处理；然后器件中的 ADC 会将模拟前端的输出数字化。AFE5851 中只有 8 个 ADC；因此奇数和偶数通道将复用为一个 LVDS 输出对。ADC 的输出以串行格式流出。我们推荐使用德州仪器 (TI) 的 TSW1250EVM 来处理采样数据。TSW1250 包括高速 LVDS 解串器、多路解复用器和分析系统，它提供了一整套硬件和用户界面软件来有效评估 AFE5851 的性能。

支持的产品和硬件
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评估模块 (EVM) 用 GUI

DATACONVERTERPRO-SW — 高速数据转换器专业 GUI 安装程序，v5.31

该高速数据转换器专业版 GUI 是一款 PC（与 Windows® XP/7/10 兼容）程序，旨在帮助评估大多数 TI 高速数据转换器 [模数转换器 (ADC) 和数模转换器 (DAC)] 和模拟前端 (AFE) 平台。DATACONVERTERPRO-SW 支持整个 TSW14xxx 系列的数据采集和图形生成卡，为分析时域和频域中的数据转换器提供了快速强大的解决方案以及单音、多音和调制信号支持。此 GUI 还兼容用于快速合成单音、多音和调制信号的 TI 图形生成 GUI。

用户可以向 DATACONVERTERPRO-SW 提供自定义图形以加载到 TI DAC。支持从 ADC 捕获导出 (...)

支持的产品和硬件
支持软件

SLOC231 — TSW1250EVM Software

支持的产品和硬件
计算工具

SLOC145 — AFE5801 and AFE5851 TGC Calculator

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RGC) 64 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

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