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U2891B - 2.5 GHz Quadrature Up-Converter

General Description

The U2891B is a silicon monolithic IC made with TELEFUNKEN’s advanced UHF process.

The IC consists of a 500 MHz I/Q quadrature modulator and a 2.5 GHz mixer.

Both parts can be connected via an external filter in order to suppress harmonics and spurious products.

Key Features

  • 3 V operation, a low current consumption and furthermore two separate power-down functions for modulator and mixer. The RF ports are single ended and the device can be operated adjustment free, but for optimization also two pins for phase adjustment are provided. These features and the double conversion concept of U2891B make this device perfectly suited for all digital radio.

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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 TELEFUNKEN Semiconductors U2891B 2.5 GHz Quadrature Up-Converter Description The U2891B is a silicon monolithic IC made with TELEFUNKEN’s advanced UHF process. The IC consists of a 500 MHz I/Q quadrature modulator and a 2.5 GHz mixer. Both parts can be connected via an external filter in order to suppress harmonics and spurious products. The device features 3 V operation, a low current consumption and furthermore two separate power-down functions for modulator and mixer. The RF ports are single ended and the device can be operated adjustment free, but for optimization also two pins for phase adjustment are provided. These features and the double conversion concept of U2891B make this device perfectly suited for all digital radio applications from 900 MHz up to 2.