S1T8825B

www.DataSheet.co.kr 1.3GHZ DUAL PLL S1T8825B INTRODUCTION The S1T8825B is a high performance dual frequency synthesizer with two integrated high frequency pre-scalers for RF operation up to 1.3 GHz. The S1T8825B is composed 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 S1T8825B via three-wire interface (CK, DATA, EN). 16−TSSOP−0044 FEATURES Two systems for receiver and transmitter Very low operating current consumption: Icc = Typ. 7.0mA @ 3.0V Low operating power supply voltage : 2.2 to 5.5V ( 200MHz to 550MHz Operating ) 2.7 to 3.6V ( 550MHz to 1.3GHz 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) ORDERING INFORMATION Device +S1T8825B01-R0B0 +: New Product Package 16−TSSOP−0044 Operating Temperature −30 °C to + 85 °C APPLICATIONS Cordless telephone systems Portable wireless communications (PCS) Wireless Local Area Networks (WLANs) Other wireless communication systems 1 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr S1T8825B 1.3GHZ DUAL PLL BLOCK DIAGRAM Fin1 1 Pre_Amp 1/2 Prescaler 1 32,...