SA676 Datasheet | Philips Semiconductors

Philips Semiconductors Product specification Low-voltage mixer FM IF system DESCRIPTION The SA676 is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage regulator and audio and RSSI op amps. The SA676 is available in a 20-pin SSOP (shrink small outline package). The SA676 was designed for cordless telephone applications in which efficient and economic integrated solutions are required and yet high performance is desirable. Although the product is not targeted to meet the stringent specifications of high performance cellular equipment, it will exceed the needs for analog cordless phones. The minimal amount of external ponents and absence of any external adjustments makes for a very economical solution. PIN CONFIGURATION DK Package RF IN+ 1 RF IN- DECOUPLING 2 OSCOUT 3 OSCIN 4 RSSI OUT 5 VCC 6 AUDIO FEEDBACK 7 AUDIO OUT 8 RSSI FEEDBACK 9 QUADRATURE IN 10 20 MIXER OUT 19 IF AMP DECOUPLING 18 IF AMP IN 17 IF AMP DECOUPLING 16 IF AMP OUT 15 GND 14 LIMITER IN 13 LIMITER DECOUPLING 12 LIMITER DECOUPLING 11 LIMITER OUT Features - Low power consumption: 3.5m A typical at 3V - Mixer input to >100MHz - Mixer conversion power gain of 17d B at 45MHz - XTAL oscillator effective to 100MHz (L.C. oscillator or external oscillator can be used at higher frequencies) SR00514 Figure 1. Pin Configuration - 102d B of IF Amp/Limiter gain - 2MHz IF amp/limiter small signal bandwidth - Temperature pensated logarithmic Received Signal Strength Indicator (RSSI) with a 70d B dynamic range - Audio output internal op amp - RSSI output internal op amp - Internal op amps with rail-to-rail outputs - ESD protection: Human Body Model 2k V Robot Model 200V - Low external ponent count; suitable for crystal/ceramic/LC filters APPLICATION - Cordless phones ORDERING INFORMATION DESCRIPTION 20-Pin Plastic Shrink Small Outline...