|Category||Communication => Telephony|
|Description||Description = KB8825 1.1GHz Dual PLL ;; Function = 1.1GHz Dual PLL ;; Features = High Performance Dual Frequency Synthesizer With Two Integrated High Frequency Pre-scalers For RF Operation up to 1.1 Ghz,two Systems For Receiver And Transmitter ;; Package = 16TSSOP ;; Production Status = Eol|
|Company||Samsung Semiconductor, Inc.|
|Datasheet||Download KB8825 datasheet
The is a high performance dual frequency synthesizer with two integrated high frequency pre-scalers for RF operation to 1.1 GHz. The KB8825 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 KB8825 via three-wire interface (CK, DATA, EN).FEATURES
Two systems for receiver and transmitter Very low operating current consumption: Icc = Typ. @ 3.0V Low operating power supply voltage ~ 550MHz Operating ~ 1.1GHz Operating Modulus pre-scaler: 66 No dead-zone PFD Colpitt type local oscillation Selectable charge pump current Selectable power down mode TSSOP 16-pin package (0.65 mm pitch)APPLICATIONS
Cordless telephone systems Portable wireless communications (PCS) Wireless Local Area Networks (WLANs) Other wireless communication systems2 Charge Pump Phase Detector Lock Detector 6 2
Pin No. Symbol Fin1 Vcc CP1 GND LD CK DATA EN BO OSCO OSCI CP2 Fin2 I/O Description Input terminal of channel 1 RF signal. Power supply voltage input. PIN2 and PIN15 are connected together. Output terminal of channel 1 charge pump. Charge pump is constant current output circuit, and output current is selected by input serial data. Terminal of GND. PIN4 and PIN13 are connected in common. Output terminal of lock detection. It is the open drain output. Input terminal of clock. Input terminal of data. Input terminal of enable signal. Output terminal of buffer amplifier. The signal of local oscillation is output through the buffer amplifier. Output terminal of local oscillation signal. Input terminal of local oscillation signal. In case of external input, connecting it to this terminal. Switchover terminal for the time constant of loop filter. is an open drain output. If you don't switch the time constant of loop filter, general output is available. Output terminal of channel 2 charge pump. Charge pump is a constant current output circuit, and the output current is selected by input serial data. Input terminal of channel 2 RF signal.
Characteristic Power Supply Voltage Power Dissipation Operating temperature Storage temperature Take care ! ESD sensitive device Symbol Vcc PD TOPR TSTG Value Unit mW °C
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