SA639 switch equivalent, low voltage mixer fm if system with filter amplifier and data switch.
* 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 3.
and will function down to 2.7V. The RF section is similar to the famous NE605. The data output provides a minimum bandwi.
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 (R.
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