S1T8528 - Samsung semiconductor

S1T8528 ENHANCED-1 CHIP CT0 RF IC

Pin No 1 Symbol PDT 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 in.

Features

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• Operating voltage range: 2.0V ~ 5.5V Typical supply current: 8.9mA at 3.6V Built-in low battery detection function ( selectable 3.45V, 3.3V, 3.0V, 2.2V, 2.1V ) Built-in speaker volume control and speaker amplifier Built-in splatter filter Support mode selection ( Active, Rx, Standby and Inactive mode ) FM Receiver — Excellent Receiver characteristics < 10.7MHz crystal filter used > Input sensitivity 0.7µ Vrms at 12dB SINAD
• Adjacent channel rejection > 55dB Spurious rejection (image of the second IF) > 60dB Intermodulation rejection > 50dB
• — RSSI ( Linear ) and Carrier detec.