SA639 - Low voltage mixer FM IF system
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
* VCC = 2.7 V to 5.5 V
* Low power consumption: 8.6 mA (typical) at 3 V
* Wideband data output (1 MHz minimum)
* Fast RSSI rise and fall times
* Mixer input to >500 MHz
* Mixer conversion power gain of 9.2 dB and noise figure of 11 dB at 110 MHz
* XTAL oscillator effectiv
