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S1T8825 Datasheet 1.1ghz Dual Pll

Manufacturer: Samsung Semiconductor

Overview: PRELIMINARY ( VER.2.1 ) 1.1GHZ DUAL PLL S1T8825 INTRODUCTION The S1T8825 is a high performance dual frequency synthesizer with two integrated high frequency pre-scalers for RF operation up to 1.1 GHz. The S1T8825 is posed of modulus pre-scalers providing 64 and 66, no dead-zone PFD, selectable charge pump current, selectable power down mode circuits, lock detector output, and loop filter’s time constant switch. It is fabricated using the ASP5HB Bi-CMOS process and is available 16-TSSOP with surface mount plastic packaging. Serial data is transferred into the S1T8825 via three-wire interface (CK, DATA, EN).

Key Features

  • Two systems for receiver and transmitter Very low operating current consumption: Icc = Typ. 5.5mA @ 3.0V Low operating power supply voltage : 2.2 ~ 5.5V ( 200MHz ~ 550MHz Operating ) 2.7 ~ 3.6V ( 550MHz ~ 1.1GHz Operating ).
  • Modulus pre-scaler: 64 / 66 No dead-zone PFD Colpitts type local oscillation Selectable charge pump current Selectable power down mode TSSOP 16-pin package (0.65 mm pitch).

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