AD8345 Datasheet

• Output frequency range 140 MHz to 1000 MHz
• I/Q baseband frequency range dc – 80 MHz output power +2.5 dBm P1 dB
• Noise floor –155 dBm/Hz
• Quadrature phase accuracy 0.5 deg rms
• Amplitude balance 0.2 dB
• Single 2.7 V – 5.5 V supply
• Pin compatible with AD8346 / AD8349

• Cellular communication systems
• W-CDMA/CDMA/GSM/PCS/ISM transceivers
• Fixed broadband access systems LMDS/MMDS
• Wireless LAN
• Wireless local loop
• Digital TV/CATV modulators
• Single sideband upconverter

The AD8345 is a silicon RFIC quadrature modulator, designed for use from 140 MHz to 1000 MHz. The part provides a very low noise floor and high output power supporting a significant improvement in output dynamic range. The AD8345 needs a low LO drive level and provides a fully specified 50 Ω buffered output.

The part provides excellent amplitude and phase balance and sideband suppression specifications to enable higher order/capacity QAM modulated radios.

Additionally the AD8345 has been tested and supports the requirements as an IF modulator within CDMA/GSM/W-CDMA cellular infrastructure equipment and as a direct conversion modulator for the 800 – 900 MHz cellular bands.

The AD8345 is supplied in 16-lead Thin Shrunk Small Outline (TSSOP) package with exposed paddle, and fully specified over –40°C to +85°C temperature range.