MAXIM MAX9989/MAX9990 handbook

Update: 30 September, 2023

The MAX9989/MAX9990 are MAXIM’s high output LO buffers that provide +14dBm to +20dBm of output power to drive the LO inputs of high-linearity passive mixers while offering 40dB reverse isolation to prevent LO pulling. The MAX9989 is internally matched for the cellular/GSM bands, and the MAX9990 is matched for the DCS/PCS/UMTS bands. The typical application circuit provides a nominal +17dBm output power with ±1dB variation over supply, temperature, and input power. With two optional resistors, the output power can be precision set from +14dBm to +20dBm. The devices offer more than 35dB main driver output to PLL amp output isolation. Each device is offered in a 5mm x 5mm 20-pin thin QFN package with exposed paddle. Applications include cellular/GSM/DCS/PCS/UMTS base station Tx/Rx LO drives, coherent receivers, ISM wireless LAN, wireless local loop, local multipoint distribution service, and point-to-point systems.

Brand: MAXIM

File format: PDF

Size: 348 KB

MD5 Checksum: 1844104F3BEE9988CF1A92455AC825D0

Publication date: 07 May, 2012

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PDF Link: MAXIM MAX9989/MAX9990 handbook PDF

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