具有 CW 无源混频器的完全集成的 8 通道超声波模拟前端

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产品详细信息

参数

Number of input channels 8 Interface Serial LVDS Active supply current (Typ) (mA) 133 Supply voltage (Max) (V) 3.6 Operating temperature range (C) 0 to 85 Features Analog Front End (AFE) Approx. price (US$) 45.80 | 1ku open-in-new 查找其它 超声波 AFE

封装|引脚|尺寸

NFBGA (ZCF) 135 135 mm² 9 x 15 open-in-new 查找其它 超声波 AFE

特性

  • 8-Channel Complete Analog Front-End
    • LNA, VCAT, PGA, LPF, ADC, and CW Mixer
  • Programmable Gain Low-Noise Amplifier (LNA)
    • 24-, 18-, or 12-dB Gain
    • 0.25-, 0.5-, or 1-VPP Linear Input Range
    • 0.63-, 0.7-, or 0.9-nV/√Hz Input-Referred Noise
    • Programmable Active Termination
  • 40-dB, Low-Noise Voltage-Controlled Attenuator
    (VCAT)
  • 24-, or 30-dB Programmable Gain Amplifier (PGA)
  • 3rd-Order, Linear-Phase, Low-Pass Filter (LPF)
    • 10 MHz, 15 MHz, 20 MHz, or 30 MHz
  • 14-bit Analog-to-Digital Converter (ADC)
    • 77-dBFS SNR at 65 MSPS
    • LVDS Outputs
  • Noise and Power Optimizations (Full Chain)
    • 158 mW/CH at 0.75 nV/√Hz, 65 MSPS
    • 101 mW/CH at 1.1 nV/√Hz, 40 MSPS
    • 80 mW/CH in CW Mode
  • Excellent Device-to-Device Gain Matching
    • ±0.5 dB (Typical) and ±0.9 dB (Maximum)
  • Low Harmonic Distortion
  • Fast and Consistent Overload Recovery
  • Passive Mixer for Continuous Wave Doppler
    (CWD)
    • Low Close-in Phase Noise: –156 dBc/Hz at 1
      KHz Off 2.5-MHz Carrier
    • Phase Resolution of 1/16λ
    • Support 16X, 8X, 4X and 1X CW Clocks
    • 12-dB Suppression on 3rd and 5th Harmonics
    • Flexible Input Clocks
  • Small Package: 15-mm × 9-mm, 135-Pin NFBGA
open-in-new 查找其它 超声波 AFE

描述

The AFE5808A is a highly-integrated, analog front-end (AFE) solution specifically designed for ultrasound systems in which high performance and small size are required. The AFE5808A integrates a complete time-gain-control (TGC) imaging path and a continuous wave Doppler (CWD) path. This device also enables users to select one of various power and noise combinations to optimize system performance. Therefore, the AFE5808A is an outstanding ultrasound analog front-end solution not only for high-end systems, but also for portable ones.

The AFE5808A device contains eight voltage controlled amplifiers (VCA), 14- and 12-bit analog-to-digital converters (ADC), and CW mixers. The VCA includes a low-noise amplifier (LNA), voltage-controlled attenuator (VCAT), programmable gain amplifier (PGA), and low-pass filter (LPF). The LNA gain is programmable to support 250 mVPP to 1 VPP input signals. Programmable active termination is also supported by the LNA. The ultralow noise VCAT provides an attenuation control range of 40 dB, and improves overall low gain SNR that benefits harmonic imaging and near field imaging. The PGA provides gain options of 24 dB and 30 dB. In front of the ADC, a LPF can be configured as 10 MHz, 15 MHz, 20 MHz, or 30 MHz to support ultrasound applications with different frequencies. The high-performance 14-bit, 65-MSPS ADC in the AFE5808A device achieves 77-dBFS SNR, and ensures excellent SNR at low-chain gain. The ADC LVDS outputs enable flexible system integration desired for miniaturized systems.

The AFE5808A device also incorporates a low-power passive mixer and a low-noise summing amplifier to accomplish on-chip CWD beamforming. Sixteen selectable phase-delays can be applied to each analog input signal. A unique 3rd- and 5th-order harmonic-suppression filter is implemented to enhance CW sensitivity.

The AFE5808A is available in a 15-mm × 9-mm, 135-pin BGA package and it is specified for operation from 0°C to 85°C. This device is also pin-to-pin compatible with the AFE5803, AFE5807, and AFE5808.

NOTE: The AFE5808A is an enhanced version of AFE5808 and is recommended for new designs. Compared to the AFE5808, the AFE5808A expands the cutoff frequency range of the digital high-pass filter; increases the handling capability of extreme overload signals; and lowers the correlated noise significantly when high-impedance source appears.

open-in-new 查找其它 超声波 AFE
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技术文档

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类型 标题 下载最新的英文版本 发布
用户指南 AFE5808/08A (Rev E) Evaluation Module.. 2015年 3月 5日
应用手册 Understanding Serial LVDS Capture in High Speed ADCs 2013年 7月 10日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
AFE5808A 评估模块
AFE5808AEVM
document-generic 用户指南
$299.00
说明

AFE5808AEVM 提供了方便快捷的平台来评估 AFE5808A。AFE5808A 是 AFE5808 的增强版,推荐在新设计中采用此产品。相较于 AFE5808,它扩展了数字高通滤波器的截止频率范围;当出现高源阻抗时减少了相关噪音;增强了对极度过载信号的处理功能。

AFE5808A 是 8 通道完全集成的模拟前端 (AFE),其连续波 (CW) 多普勒混频器适用于频谱多普勒超声波设备。EVM 套件中包含用户指南、软件、USB 电缆和经过完整组装的电路板。用户需要提供输入信号以进行信号发生器测量。用户需要获得一种方法,用于添加和分析来自 AFE5808 LVDS 数据流的数据。如果用户没有找到合适的方法,解串器板将非常有用。此板(即 TSW1250EVM)直接与 AFE5808EVM 相连,并以并行方式同时为所有 8 个通道提供数据。TSW1250EVM 必须单独购买。

特性
  • 定义 AFE5808A 的特性
  • 支持 CW 测试
  • 提供来自 ADC 的 8 通道低电压差动信号 (LVDS) 输出
  • 与标准 TI LVDS 解串器 TSW1250EVM 兼容
  • 可通过 USB 接口与个人计算机 (PC) 进行通信
用于评估模块 (EVM) 的 GUI 下载
SLOC230F.ZIP (127994 KB)

设计工具和仿真

仿真模型 下载
SLOC232.ZIP (110 KB) - IBIS Model
仿真模型 下载
SLOM257A.ZIP (80 KB) - PSpice Model
仿真模型 下载
SLOM277.ZIP (35 KB) - TINA-TI Spice Model
仿真模型 下载
SLOM278.TSC (63 KB) - TINA-TI Reference Design
仿真模型 下载
SLOM279.ZIP (45 KB) - PSpice Model
仿真模型 下载
SLOM280.ZIP (63 KB) - TINA-TI Spice Model
仿真模型 下载
SLOM281.TSC (106 KB) - TINA-TI Reference Design

CAD/CAE 符号

封装 引脚 下载
NFBGA (ZCF) 135 视图选项

订购与质量

支持与培训

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