CF5034 Datasheet, PDF (1/6 Pages) Nippon Precision Circuits Inc – 350MHz PECL-output Oscillator ICs

CF5034 series
350MHz PECL-output Oscillator ICs
OVERVIEW
The CF5034 series are differential LVPECL output oscillator ICs. They are made using a BiCMOS process
which allows high-frequency oscillator circuits and differential LVPECL output circuits to be fabricated on a
single chip. Two oscillator modes are supported—350MHz maximum fundamental oscillation mode, and
80MHz to 160MHz 3rd overtone oscillation mode.
The CF5034 series devices require only the connection of a crystal to realize a differential LVPECL output
oscillator circuit.
FEATURES
I 3.3 ± 0.3V operating supply voltage
I Oscillator frequency range
• 80MHz to 350MHz fundamental oscillation
mode
• 80MHz to 160MHz 3rd overtone oscillation
mode
I 40MHz to 350MHz output frequency range
I Differential LVPECL output
I f_O (oscillator frequency) or f_O/2 output frequency,
determined by internal connection
I 50 ± 5% output duty (measured at output crossing
point)
I Standby function: outputs are high impedance
when OE is LOW.
I Power-saving pull-up resistor built-in (pin OE)
I Chip form (CF5034××)
SERIES LINEUP
Version
Oscillation mode
Recommended oscillator
frequency [MHz]¹
Output frequency
CF5034AA
CF5034AB
CF5034BA
CF5034BB
CF5034DA
CF5034DB
CF5034LA
CF5034LB
CF5034MA
CF5034MB
f_O
250 to 350
f _O /2
Fundamental
160 to 250
f_O
f _O /2
–
80 to 350
f_O
(external capacitors required)
f _O /2
f_O
125 to 160
Fundamental or
f _O /2
3rd overtone
f_O
80 to 125
f _O /2
1. The recommended oscillator frequency criteria is based on the negative resistance characteristics and cutoff frequency. Note that this may change
depending on the crystal characteristics, thus sufficient allowance should be made.
ORDERING INFORMATION
Device
CF5034××−1
Package
Chip form
NIPPON PRECISION CIRCUITS INC.—1