DESCRIPTION

The SA616 is a low-voltage high performance 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 SA616 is available in 20-lead SSOP (shrink small outline package).

FEATURES

• Low power consumption: 3.5mA typical at 3V

• Mixer input to >150MHz

• Mixer conversion power gain of 17dB at 45MHz

• XTAL oscillator effective to 150MHz (L.C. oscillator or external oscillator can be used at higher frequencies)

• 102dB of IF Amp/Limiter gain

• 2MHz IF amp/limiter small signal bandwidth

• Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with a 80dB dynamic range

• Low external component count; suitable for crystal/ceramic/LC filters

• Excellent sensitivity: 0.31µV into 50Ω matching network for 12dB SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF at 45MHz and IF at 455kHz

• SA616 meets cellular radio specifications

• Audio output internal op amp

• RSSI output internal op amp

• Internal op amps with rail-to-rail outputs

• ESD protection: Human Body Model 2kV

Robot Model 200V

APPLICATIONS

• Portable cellular radio FM IF

• Cordless phones

• Wireless systems

• RF level meter

• Spectrum analyzer

• Instrumentation

• FSK and ASK data receivers

• Log amps

• Portable high performance communication receiver

• Single conversion VHF receivers