SA639 Datasheet - Philips

SA639 Low voltage mixer FM IF system with filter amplifier and data switch

The SA639 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), fast RSSI op amps, voltage regulator, wideba.

SA639 Features

* XTAL oscillator effective to 150MHz (L.C. oscillator to 1GHz local oscillator can be injected)

* VCC = 2.7 to 5.5V

* Low power consumption: 8.6mA typ at 3V

* Wideband data output (1MHz min.)

* Fast RSSI rise and fall times

* Mixer input to >500MHz

SA639_PhilipsSemiconductors.pdf