The SA636DK/01 is a low-voltage high performance monolithic FM/IF System with high-speed RSSI incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage regulator, wideband data output and fast RSSI op amps. The SA636 was designed for high bandwidth portable communication applications and will function down to 2.7V. The data output has a minimum bandwidth of 600kHz. This is designed to demodulate wideband data. The RSSI output is amplified. The RSSI output has access to the feedback pin. This enables the designer to adjust the level of the outputs or add filtering. SA636 incorporates a power-down mode which powers down the device when POWER_DOWN_CTRL pin is LOW. Power-down logic levels are CMOS and TTL compatible with high input impedance.
● Wideband data output (600kHz minimum)
● Fast RSSI rise and fall times
● 6.5mA typical at 3V Low power consumption
● Mixer input to >500MHz
● Mixer conversion power gain of 11dB at 240MHz
● Mixer noise figure of 12dB at 240MHz
● XTAL oscillator effective to 150MHz (LC oscillator to 1GHz local oscillator can be injected)
● 92dB of IF amp/limiter gain
● 25MHz limiter small signal bandwidth
● RSSI output internal op amp
● Internal op amps with rail-to-rail outputs
● Low external component count, suitable for crystal/ceramic/LC filters
● 10.7MHz filter matching (330R)
● Power-down mode (ICC = 200µA)
● Latch-up testing is done to JEDEC standard JESD78 class II, level B
