AD8321-EVAL开发板套件编程器的评估演示板及套件规格书PDF中文资料

AD8321-EVAL属于开发板套件编程器的评估演示板及套件。由亚德诺半导体技术有限公司制造生产的AD8321-EVAL评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。

DESCRIPTION

The AD8321 is a low cost digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are designed to the DOCSIS* (upstream) standard. An 8-bit serial word determines the desired output gain over a 53.4 dB range, resulting in gain changes of 0.75 dB/LSB.

FEATURES

Linear in dB Gain Response Over >53 dB Range

Drives Low Distortion >11 dBm Signal into 75 Ω Load:

–53 dBc SFDR at 42 MHz

Very Low Output Noise Level

Maintains Constant 75 Ω Output Impedance

Power-Up and Power-Down Condition

No Line Transformer Required

Upper Bandwidth: 235 MHz (Min Gain)

9 V Single Supply Operation

Power-Down Functionality

Supports SPI Interface

Low Cost

APPLICATIONS

Gain Programmable Line Driver

HFC High Speed Data Modems

Interactive CATV Set-Top Boxes

CATV Plant Test Equipment

General Purpose IF Variable Gain Block