CF5072BA

CF5072BA 155MHz VCXO Module IC www.datasheet4u.com OVERVIEW The CF5072BA is 155MHz VCXO IC. It incorporates a 155.52MHz fundamental frequency oscillator circuit and a differential LVPECL output circuit on a single chip. The oscillator circuit features characteristics optimized for VCXO operation, and includes a varicap connection pin. The CF5072BA can be configured with few external components, making them ideal as miniature VCXO modules. FEATURES I I I I 3.0 to 3.6V operating supply voltage range 70MHz to 200MHz oscillator frequency range Differential LVPECL output 50 ± 5% output duty (measured at the output crossing point) I I I Output enable function High impedance output when OE = LOW (oscillator continues running) −40 to 85°C operating temperature range Chip form (CF5072BA) BLOCK DIAGRAM VDD2 VDD1 RP LS X'tal XIN XC 100pF Differential Converter C2 RS VC C1 Pre-buffer ECL OUTN CVC XR RVC OUT Oscillator block equivalent circuit VSS1 OE VSS2 ESD sensitive device: The XR pin is not equipped with a protection circuit. Accordingly, its electrostatic withstand voltage is significantly lower than that of the other pins. ESD breakdown prevention handling precautions are strongly recommended. ORDERING INFORMATION Device CF5072BA−1 Package Chip form SEIKO NPC CORPORATION —1 CF5072BA FUNCTIONAL DESCRIPTION Oscillator Equivalent Circuit www.datasheet4u.com The oscillator can be represented by the equivalent circuit shown below. The crystal unit is connected to XI...