AD8347ARUZ

The AD8347ARUZ from Analog Devices is a broadband direct quadrature demodulator designed for communications receivers. It operates across a wide frequency range of 0.8 GHz to 2.7 GHz, making it suitable for various applications including cellular base stations, radio links, and RF instrumentation.

This device integrates both RF and baseband automatic gain control (AGC) amplifiers, providing a significant AGC range of 69.5 dB. Key electrical specifications include a typical gain of 39.5 dB, a noise figure of 11 dB at maximum gain, and a P1dB of -30 dBm. The quadrature phase accuracy is typically 1°, with an I/Q amplitude balance of 0.3 dB.

The AD8347ARUZ operates on a single supply voltage ranging from 2.7 V to 5.5 V and consumes approximately 80 mA of current. It is housed in a 28-lead TSSOP package, designed for surface mount applications. The demodulator's outputs are ADC-compatible, facilitating direct connection to analog-to-digital converters.

Applications for the AD8347ARUZ include wireless local loop systems, IF broadband demodulators, and satellite modems. Its design minimizes DC offsets internally and allows for external control of offset nulling pins.