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功能 : | 解调器 |
LO 频率 : | 80MHz ~ 1GHz |
RF 频率 : | 40MHz ~ 500MHz |
噪音数据 : | 7.8dB |
电流 - 电源 : | 24mA |
电源电压 : | 1.8 V ~ 5.25 V |
封装/外壳 : | 16-WQFN 裸露焊盘 |
包装 : | 带卷 (TR) |
The LT®5546 is a 40MHz to 500MHz monolithic integrated quadrature demodulator with variable gain amplifier (VGA) and 17MHz I/Q baseband bandwidth designed for low voltage operation. It supports standards that use a linear modulation format. The chip consists of a VGA, quadrature downconverting mixers and 17MHz lowpass noise filters (LPF). The LO port consists of a divide-by-two stage and LO buffers. The IC provides all building blocks for IF down-conversion to I and Q baseband signals with a single supply voltage of 1.8V to 5.25V. The VGA gain has a linear-in-dB relationship to the control input voltage. Hard-clipping amplifiers at the mixer outputs reduce the recovery time from a signal overload condition. The lowpass filters reduce the out-of-band noise and spurious frequency components. The -3dB corner frequency of the noise filters is approximately 17MHz and has a first order rolloff. The standby mode provides reduced supply current and fast transient response into the normal operating mode when the I/Q outputs are AC-coupled to a baseband chip
LT5546EUF#TR,LT5546EUF,5546
LT