凌特公司日前推出一种针对通道抗混淆或重建应用的超低噪声(92dB SNR)、高频滤波器模块LT1568。LT1568在单芯片上集成了一对匹配的二阶滤波器。匹配的滤波器响应、增益以及相位在信道至信道间的可重复性对I/Q应用来说是十分关键。内部有源及无源电路经过精确的调整,以确保可预测和可重复的性能,若采用传统的分立式解决方案则很难达到。LT1568专 Linear Technology has introduced a low noise (92dB SNR), high frequency filter module LT1568 for channel anti-aliasing or reconstruction applications. The LT1568 integrates a matched pair of second-order filters on a single chip. Matched filter response, gain, and phase-to-channel repeatability are critical to I / Q applications. The internal active and passive circuits are precisely tuned to ensure predictable and repeatable performance, which is difficult to achieve with traditional discrete solutions. LT1568 specifically