LT5546 - 40MHz To 500MHz VGA And I/Q Demodulator With 17MHz Baseband Bandwidth

The LT5546 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.
By Linear Technology Corporation
LT5546 's PackagesLT5546 's pdf datasheet

LT5546 pdf datasheet download

LT5546 Pinout, Pinouts
LT5546 pinout,Pin out
This is one package pinout of LT5546,If you need more pinouts please download LT5546's pdf datasheet.

LT5546 Application circuits
LT5546 circuits
This is one application circuit of LT5546,If you need more circuits,please download LT5546's pdf datasheet.

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