ADA4356

推荐用于新设计

可编程跨阻、电流到比特接收器微模块

产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

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概述

  • 高性能、电流输入、数据采集微模块,包含
    • 可编程增益跨阻放大器(PGTIA)
    • 全差分放大器(FDA)
    • 可编程模拟低通滤波器(LPF)
    • 14 位 125MSPS ADC
    • 三种可选增益
    • 用于 ADC 的集成 1.8V LDO
  • 小巧外形:12.00mm × 6.00mm BGA
  • 由单个 3.3V 电源供电
  • PGTIA 可选增益,灵敏度为单个 20ns 脉冲
    • TZ = 133kΩ,250nA 至 10μA
    • TZ = 11kΩ,1μA 至 100μA
    • TZ = 4.54kΩ,10μA 至 300μA
  • 可选的外部分流电路可实现高达 60mA 的电流检测
  • 快速输入过载恢复
  • 用于降噪和抗混叠滤波的模拟滤波器
    • 可选的 1.0MHz 和 100MHz 低通滤波器带宽
  • 低输入参考电流噪声:3.5nA RMS
    • TZ = 133kΩ,1MHz 模拟滤波器
  • 14 位 ADC,采样率最高可达 125MSPS
    • 串行 LVDS 数据输出
    • 串行外设接口 (SPI) 控制
  • 静止功率:546mW,启用 LDO
  • 温度范围:−40°C 至 +85°C

ADA4356 是一款低噪声、宽动态范围、电流输入模数转换器 (ADC) 微模块。为了在对尺寸有要求的应用中节省空间,ADA4356 包含了实现完整的电流到比特数据采集解决方案所需的所有有源和无源元件,并具有可编程的增益和滤波特性。

ADA4356 中的高速跨阻放大器 (TIA) 前端放大器支持 20ns 脉冲宽度,这使得 ToF 测量具有高空间分辨率,并且能够从大的输入信号中快速恢复过驱动状态。ADA4356 包含三个可选的 TIA 反馈电阻值,用于可编程 TIA 增益。

内部模拟低通滤波器提供 100MHz 或 1MHz 截止频率,以降低宽带噪声,并作为 ADC 输入的抗混叠滤波器。对于低带宽信号,1MHz 滤波器配置可提供额外的噪声抑制。

在 TIA 和滤波器模块之后,一个 14 位流水线 ADC 以 125MSPS 的速度转换模拟信号,并通过两条串行低电压差分信号 (LVDS) 数据通道输出数字化信号,每条通道的运行速率高达 1GBPS。数据时钟输出 (DCO) 的工作频率高达 500MHz,并支持双倍数据速率 (DDR) 操作。

应用

  • 飞行时间(ToF)
  • 电流到比特的转换
  • 测距仪
  • 光纤传感
  • 光时域反射测量(OTDR)

ADA4356
可编程跨阻、电流到比特接收器微模块
ADA4356 Simplified Block Diagram ADA4356 Pin Configuration ADA4356 Chip Illustration
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硬件生态系统

部分模型 产品周期 描述
线性稳压器 1
LT3045 推荐用于新设计 20V、500mA、超低噪声、超高 PSRR 线性稳压器
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评估套件

eval board
EVAL-ADA4356EBZ

Evaluating the ADA4356, Programmable Transimpedance, Current to Bits Receiver μModule

特性和优点

  • Fully-featured evaluation board for the ADA4356, a single-channel, current input, analog-to-digital converter (ADC) μModule in a 12mm × 6mm, 84-ball ball grid array (BGA) package
  • Analysis | Control | Evaluation (ACE) Software plug-in available for device configuration, data capture, and performance evaluation
  • On-board power solution and input current source
  • On-board input signal current divider for current range extension
  • Provision for TIA gain logic control through 3-pin headers
  • Self-debug circuitry for quick diagnostic of the board’s supplies
  • FMC compatible, configured for ZedBoard but can also be controlled using other FMC-based FPGAs

产品详情

The EVAL-ADA4356EBZ evaluation board is designed to evaluate the performance of the ADA4356, a single-channel, low-noise, wide dynamic-range, current input, analog-to-digital converter (ADC) μModule with three programmable gains and two selectable internal analog low-pass filters, offered in a 12mm × 6mm BGA package. It provides access to the ADA4356’s features through ADI’s Analysis | Control | Evaluation (ACE) software.

The EVAL-ADA4356EBZ evaluation board is designed for use with the Digilent ZedBoard via the field programmable gate array (FPGA) mezzanine card (FMC) connector.

The notable features which the EVAL-ADA4356EBZ evaluation board supports are as follows:

  • Low voltage digital signaling (LVDS) data output interface.
  • Programmable gain transimpedance amplifier (PGTIA), low-pass filter (LPF), and ADC configuration via serial peripheral interface (SPI) and secure shell (SSH).
  • On-board generation of 3.3V regulated supplies that power the board’s main circuitry, as well as other regulated supplies: 2.5V, 1.8V.
  • Multiple on-board input options for ease of evaluation.
  • Level shifters for flexibility on choice of FPGAs.

The EVAL-ADA4356EBZ evaluation board is a 6-layer printed circuit board (PCB) with dimensions of 3.957in × 2.717in. Figure 1 shows the board’s front and back view. The EVAL-ADA4356EBZ evaluation board comes populated with key circuits and components that allow for a straight-forward bench setup, which minimizes the need for additional bench top equipment.

Full specifications on the ADA4356 are available in the ADA4356 data sheet available from Analog Devices, Inc., and must be consulted with this user guide when using the EVAL-ADA4356EBZ evaluation board.

EVAL-ADA4356EBZ
Evaluating the ADA4356, Programmable Transimpedance, Current to Bits Receiver μModule
EVAL-ADA4356EBZ Evaluation Board Photo Angle View EVAL-ADA4356EBZ Evaluation Board Photo Top View EVAL-ADA4356EBZ Evaluation Board Photo Bottom View

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