LTC5599IUF#PBF

LTC5599 - 30MHz～1300MHz、低消費電力の直接直交変調器

The is a 30 to 1300MHz low power direct Quadrature Modulator designed for 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 up-conversion 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 feed through 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 90 to 1300MHz 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, a continuous analogue gain control VCTRL pin can be used for fast power control.

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-51.5dBm at 500MHz Low LO carrier leakage

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-52.6dBc at 500MHz Side-band suppression

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20.8dBm at 500MHz Output IP3

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-156dBm/Hz at 6MHz Offset, PRF = 3dBm low RF output noise floor

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Sine wave or square wave LO drive

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SPI control

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28mA Low power