SA606

General description

The SA606 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 SA606 is available in 20-lead SOL (surface-mounted small outline large package) and 20-lead SSOP (shrink small outline package).

The SA606 was designed for portable communication applications and will function down to 2.7V. The RF section is similar to the famous SA605. The audio and RSSI outputs have amplifiers with access to the feedback path. This enables the designer to level adjust the outputs or add filtering.

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 limiter small signal bandwidth
• Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with a 90dB dynamic range
• Low external component count; suitable for crystal/ceramic/LC filters
• Excellent sensitivity: 0.31µV into 50W matching network for 12dB SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF at 45MHz and IF at 455kHz
• SA606 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

Products/packages

Pricing/ordering/availability

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

Block diagrams/pinning

Design support

Support Documents

75015145; Specialty Analog Audio Amplifiers (2005-07-01)

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