LTC5599 PDF Datasheet


Please enter the part number you wish to PDF download in the search bar.


scroll

Description

This is 30MHz to 1300MHz Low Power Direct Quadrature Modulator. Features n n n n n n LTC5599 30MH- to 1300MH- Low Power Direct Quadrature Modulator Description The LTC®5599 is a direct conversion I, Q modulator designed for low power wireless applications that enable direct modulation of differential baseband I and Q signals on an RF carrier. Single side-band modulation or side-band suppressed upconversion can be achieved by applying 90° phase-shifted signals to the I and Q inputs. The I, Q baseband input ports can be either AC or DC coupled to a source with a common mode voltage level of about 1.4V. The SPI interface controls the supply current, modulator gain, and allows optimization of the LO carrier feedthrough and side-band suppression, with sine wave or square wave LO drive. A fixed LC network on the LO and RF ports covers a continuous 90MH- to 1300MH- operation. An on-chip thermometer can be activated to compensate for gain-temperature variations. More accurate temperature measurements can be made using an on-chip diode. In addition,.