S1T8527C - Samsung semiconductor

S1T8527C 1 CHIP CLP SUBSYSTEM IC

Pin No 1 Symbol PDT3 Description Phase detector output terminal of the transmitter at PLL. If fTX > fREF or fTX is leading → the output is negative pulse If fTX < fREF or fTX is lagging → the output is positive Pulse if fTX = fREF and the same phase → the output is High Impedance Compressor output terminal of compander; connected to the splatter filter amp i.

Features

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• Operating voltage range: 2.0V — 5.5V Typical supply current: 13.5mA at 3.6V Built−in low battery detection function ( selectable 3.45V, 3.3V, 3.0V, 2.2V, 2.1V ) Built−in speaker amplifier Built−in splatter filter Built−in dual conversion receiver, compander and universal PLL FM Receiver — Complete dual conversion circuit — Excellent input sensitivity (0.7µVrms at 12dB SINAD)
• Compader — Easy gain control to use external component — Included ALC (Automatic Level Control) circuit — Included Mute logic
• Universal PLL — RX (TX) divided counter range: 1/16 — 1/16383 — Reference freq.