The SA639DH is one member of the SA639 family, SA639DH is designed as the low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two wideband limiting intermediate frequency amplifiers, quadrature detector...
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), fa...
The SA638 is an IF receiver chip which serves the dual mode functionality required by the IS54 standards for North American cellular telephones. SA638 provides for both the analog FM (AMPS mode) and DQPSK (TDMA digital mode) IF receive functions in a monolit...