5072

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The 5072 series is 155.52 MHz VCXO IC. It incorporates a 155.52 MHz 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 varactor connection pin. The 5072 series can be configured with few external components, making them ideal as miniature VCXO modules.

Block Diagram

Datasheets

5072.pdf

Key Features

3.0 to 3.6V operating supply voltage range
70 MHz to 200 MHz oscillator frequency range
-40 to 85°C operating temperature range
Differential LVPECL output with bipolar construction provide effective 0 (zero) output impedance
Well matched output achieves 50 ± 5% output duty(measured at the output crossing point)
Flexible design to optimize phase noise and pullability
LVPECL differential output 50Ω termination
Bipolar output design
Low Phase Noise
Standby function
When output is disabled, oscillator stops and Hi-Z output
2 Output enable options
- CF5072BA is logic enable high
- CF5072CA is logic enable low
-40 to 85°C operating temperature range

Applications

Ethernet (Gb)
SONET
Internet infrastructure
Fiber Communications
Routers
Switches
System Clock

Benefits

Achieve wide pullability for special needs
Wide pullability options to match various ΔF/V needs
Good Phase noise typical -145 dB floor
Output drives single or multiple inputs
High tolerance to PCB impedance mismatch compared with CMOS output designs / instantiations
Stable power-on startup
Clean Start when enabled
Low PSRR