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Nippon Precision Circuits - 2.5V 3rd Overtone Crystal Oscillator Module ICs

Numéro de référence CF5018
Description 2.5V 3rd Overtone Crystal Oscillator Module ICs
Fabricant Nippon Precision Circuits 
Logo Nippon Precision Circuits 





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CF5018 fiche technique
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CF5018 series
2.5V 3rd Overtone Crystal Oscillator Module ICs
OVERVIEW
The CF5018 series are crystal oscillator ICs that operate from 2.5V. Devices are available that provide 3rd
overtone oscillation in the range 30MHz to 80MHz. They are optimized for 2.5V operation, resulting in stable
oscillator startup characteristics and output duty stability. They feature a large reduction in chip surface area
compared to existing devices, making possible the construction of small-sized crystal oscillator.
FEATURES
I 2.25 to 2.75V operating supply voltage range
I 30MHz to 80MHz oscillation frequency range
(varies with version)
I – 40 to 85°C operating temperature range
I Oscillation capacitors CG, CD built-in
I Inverter amplifier feedback resistor built-in
I Standby function
• High impedance in standby mode, oscillator stops
I Low standby current
• Power-saving pull-up resistor built-in
I fO output frequency (oscillation frequency)
I 8mA output drive capability (VDD = 2.25V)
I CMOS output duty level (1/2VDD)
I 50 ± 5% output duty (at 1/2VDD)
I 30pF output load
I Molybdenum-gate CMOS process
I Chip form (CF5018AL×)
SERIES CONFIGURATION
Version
CF5018ALA
Operating
supply voltage
range [V]
Recommended operating
frequency range1 [MHz]
30 to 36
gm ratio
0.25
Built-in capacitance [pF]
CG CD
Rf
[k]
4.7
CF5018ALB
CF5018ALC
2.25 to 2.75
36 to 40
40 to 50
0.50
0.75 8
3.5
15
3.5
CF5018ALD
50 to 60
1.00
3.0
CF5018ALE
60 to 80
1.50
10 3.5
1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the
oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting condi-
tions, so the oscillation characteristics of components must be carefully evaluated.
ORDERING INFORMATION
Device
CF5018AL×–2
Package
Chip form
SEIKO NPC CORPORATION —1

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