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MAX9981 - 825MHz to 915MHz / Dual SiGe High-Linearity Active Mixer

General Description

The MAX9981 dual high-linearity mixer integrates a local oscillator (LO) switch, LO buffer, LO splitter, and two active mixers.

On-chip baluns allow for single-ended RF and LO inputs.

Key Features

  • o +27.3dBm Input IP3 o +13.6dBm Input 1dB Compression Point o 825MHz to 915MHz RF Frequency Range o o o o o o o o 70MHz to 170MHz IF Frequency Range 725MHz to 1085MHz LO Frequency Range 2.1dB Conversion Gain 10.8dB Noise Figure 42dB Channel-to-Channel Isolation -5dBm to +5dBm LO Drive +5V Single-Supply Operation Built-In LO Switch with 52dB LO1 to LO2 Isolation MAX9981 o ESD Protection o Integrated RF and LO Baluns for Single-Ended Inputs.

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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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19-2588; Rev 0; 9/02 825MHz to 915MHz, Dual SiGe High-Linearity Active Mixer General Description The MAX9981 dual high-linearity mixer integrates a local oscillator (LO) switch, LO buffer, LO splitter, and two active mixers. On-chip baluns allow for single-ended RF and LO inputs. The active mixers eliminate the need for an additional IF amplifier because the mixer provides a typical overall conversion gain of 2.1dB. The MAX9981 active mixers are optimized to meet the demanding requirements of GSM850, GSM900, and CDMA850 base-station receivers. These mixers provide exceptional linearity with an input IP3 of greater than +27dBm. The integrated LO driver allows for a wide range of LO drive levels from -5dBm to +5dBm.