器件名称TI

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产品LMH2832TI
描述

LMH2832 是一款高线性度双通道数字可变增益放大器 (DVGA),适用于高速信号链和数据采集系统。LMH2832 已经过优化,可实现高带宽、低失真和低噪声等特性,因此非常适合用作双路 14 位模数转换器 (ADC) 的驱动器。此器件包含一个固定增益模块和一个可变衰减器,总增益为 30dB,最大衰减为 39dB。增益范围为 –9dB 到 30dB,增益步长为 1dB,增益精度为 ±0.2dB。输入阻抗可分别使用 1:3Ω 或 1:2Ω 比率平衡-非平衡转换器来轻松匹配 50Ω 或 75Ω 系统。LMH2832 设计用于驱动通用 ADC,而且满足电缆数据服务接口规范 (DOCSIS) 3.0 32 正交振幅调制 (QAM) 载波和 DOCSIS 3.1 宽带正交频分多路复用 (OFDM) 系统的要求。凭借优异的 NF (6.5dB) 和线性度,LMH2832 可遵循 DOCSIS 规范执行。掉电状态下的静态电流低于每通道 5mA,而运行期间的典型流耗为每通道 105mA。

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