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
I
I
I
3.3 ± 0.3V operating supply voltage
Oscillator frequency range
• 80MHz to 350MHz fundamental oscillation
mode
• 80MHz to 160MHz 3rd overtone oscillation
mode
40MHz to 350MHz output frequency range
Differential LVPECL output
I
I
I
I
I
f
O
(oscillator frequency) or f
O
/2 output frequency,
determined by internal connection
50 ± 5% output duty (measured at output crossing
point)
Standby function: outputs are high impedance
when OE is LOW.
Power-saving pull-up resistor built-in (pin OE)
Chip form (CF5034
××
)
SERIES LINEUP
Version
CF5034AA
250 to 350
CF5034AB
Fundamental
CF5034BA
160 to 250
CF5034BB
CF5034DA
–
CF5034DB
CF5034LA
125 to 160
CF5034LB
CF5034MA
CF5034MB
Fundamental or
3rd overtone
80 to 125
80 to 350
(external capacitors required)
Oscillation mode
Recommended oscillator
frequency [MHz]
1
Output frequency
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
f
O
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
NPC [ NIPPON PRECISION CIRCUITS INC ]
