DESCRIPTION
The SA647 is a low-voltage high performance monolithic digital system with high-speed RSSI incorporating a mixer, oscillator with buffered output, two limiting intermediate frequency amplifiers, fast logarithmic received signal strength indicator (RSSI), voltage regulator, RSSI op amp and power down pin. The SA647 is available in TSSOP (thin shrink small outline package).

FEATURES
• VCC = 2.7 to 5.5V
• Low power receiver (5.3mA @ 3V)
• Power down mode (ICC = 110µA)
• Fast RSSI rise and fall times
• Extended RSSI range with temperature compensation
• RSSI op amp
• 2MHz limiter small signal bandwidth
• Filter matching (1.5kΩ)
• Differential limiter output
• Oscillator buffer
• TSSOP-20 package

APPLICATIONS
• NADC (North American Digital Cellular)
• Digital receiver systems
• Cellular radio