The LT5516 is an 800MHZ to 1.5GHZ direct conversion quadrature demodulator optimized high linearity receiver applications.It is uitable for communications receivers where an RF or IF sighnal is directly converted into I and Q baseband signals with bandwidth up to 260MHZ. The LT5516 incorporates balanced I and Q mixers,Lo buffer amplifiers and a precision,high frequency quadrature generator.
In an RF receiver,the high linearity of the LT5516 provides excellent spur-free dynamic range,even with fixed gainfront end amplification.This direct conversion receiver can eliminate the need for intermediate frequency (IF) signal processing,as well as the corresponding requirements for image filtering and IF filtering.Channel filtering can be performed directly at the outputs of the I and Q channels. These outputs can interface directly to channel select filters (LPFS) or to a baseband amplifier.
关键词:
直接转换正交解调器 I和Q混频器 LO缓冲放大器
正交发生器 LO缓冲放大器 无寄生动态范围