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LT5571 - 620MHz - 1100MHz High Linearity Direct Quadrature Modulator

General Description

The LT®5571 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure.

It allows direct modulation of an RF signal using differential baseband I and Q signals.

It supports RFID, GSM, EDGE, CDMA, CDMA2000, and other systems.

Key Features

  • LT5571 620MHz.
  • 1100MHz High Linearity Direct Quadrature Modulator.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com FEATURES ■ ■ ■ ■ LT5571 620MHz – 1100MHz High Linearity Direct Quadrature Modulator DESCRIPTION The LT®5571 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure. It allows direct modulation of an RF signal using differential baseband I and Q signals. It supports RFID, GSM, EDGE, CDMA, CDMA2000, and other systems. It may also be configured as an image reject upconverting mixer by applying 90° phase-shifted signals to the I and Q inputs. The high impedance I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. The outputs of these mixers are summed and applied to an on-chip RF transformer, which converts the differential mixer signals to a 50Ω singleended output.