SA626

INTEGRATED CIRCUITS SA626 Low voltage high performance mixer FM IF system with high-speed RSSI Product specification IC17 Data Handbook 1997 Sept 25 Philips Semiconductors Philips Semiconductors Product specification Low voltage high performance mixer FM IF system with high-speed RSSI SA626 DESCRIPTION The SA626 is a low-voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, high speed logarithmic received signal strength indicator (RSSI), voltage regulator and audio and fast RSSI op amps. The SA626 is available in 20-lead SOL (surface-mounted small outline large package) and 20-lead SSOP (shrink small outline package). The SA626 was designed for high bandwidth portable communication applications and will function down to 2.7V. The RF section is similar to the famous NE605. The audio and RSSI outputs have amplifiers. The RSSI output has access to the feedback pin. This enables the designer to level adjust the outputs or add filtering. SA626 incorporates a power down mode which powers down the device when Pin 8 is low. Power down logic levels are CMOS and TTL compatible with high input impedance. PIN CONFIGURATION D and DK Packages RFIN 1 20 MIXER OUT 19 IF AMP DECOUPLING 18 IF AMP IN 17 IF AMP DECOUPLING RF BYPASS 2 XTAL OSC EMITTER XTAL OSC (BASE) VCC 3 4 5 16 IF AMP OUT 15 GND 14 LIMITER IN 13 12 11 LIMITER DECOUPLING LIMITER DECOUPLING LIMITER OUT RSSI FEEDBACK 6 RSS...