厂商：Freescale
类别：16位单片机
厂商：Linear
类别：D/A 数据转换器
厂商：Richwave
类别：LNB
类别：电源管理与用户接口IC
厂商：RFMD
类别：光接收器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
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特点RF Input Frequency Range: 40MHz to 900MHzHigh IIP3: 21dBm at 800MHzHigh IIP2: 58dBm at 800MHzI/Q Gain Mismatch: 0.3dB MaxI/Q Phase Mismatch: 0.7°Noise Figure: 12.4dB at 800MHzConversion Gain: 3.3dB at 800MHzBaseband Bandwidth: 130MHzSingle Ended, 50 Ohm Matched 2XLO InputShutdown Mode16-Lead QFN (4mm x 4mm) Package with Exposed Pad典型应用典型应用描述The LT?5517 is a 40MHz to 900MHz quadrature demodulator optimized for high linearity receiver applications where high dynamic range is important. It is suitable for communications receivers where an RF or IF signal is directly converted into I and Q baseband signals with a bandwidth up to 130MHz. The LT5517 incorporates balanced I and Q mixers, LO buffer amplifiers and a precision, broadband quadrature generator derived from an on-chip divide-by-two circuit.The superior linearity and low noise performance of the LT5517 is achieved across its full frequency range. A well-balanced divide-by-two circuit generates precision quadrature LO carriers to drive the I mixer and the Q mixer. Consequently, the outputs of the I-channel and the Q-channel are well matched in amplitude, and their phases are 90° apart. The LT5517 also provides excellent 50 Ohm impedance matching at the 2XLO port across its entire frequency range.