SA639
Low
voltage mixer FM IF system with filter amplifier and data switch
Rev.
4 — 10 July 2014
Product data sheet
1.
General description
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, wideband data output, post detection filter amplifier and data switch.
The SA639 is available in 24-lead TSSOP (Thin Shrink Small Outline Package).
The SA639 was designed for high-bandwidth portable communication applications and functions down to 2.
7 V.
The RF s...