WF5025 series
Crystal Oscillator Module ICs
OVERVIEW
The WF5025 series are miniature crystal oscillator module ICs. They feature a damping resistor R
D
matched to
the crystal's characteristics to reduce crystal current. The pad layout is arranged for flip chip mounting, which
gives the pattern design more flexibility, even for mounting ultra-miniature crystal oscillators that provide
almost no space for wiring patterns. They support fundamental oscillation and 3rd overtone oscillation modes.
The WF5025 series can be used to correspond to wide range of applications.
FEATURES
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Pad layout optimized for flip chip mounting
Miniature-crystal matched oscillator characteristics
Operating supply voltage range
• 2.5V operation: 2.25 to 2.75V
• 3.0V operation: 2.7 to 3.6V
Recommended operating frequency range
• For fundamental oscillator
- WF5025AL
×
: 20MHz to 50MHz
- WF5025BL1: 20MHz to 100MHz
• For 3rd overtone oscillator
- WF5025ML
×
: 70MHz to 133MHz
−
40 to 85
°
C operating temperature range
Oscillator capacitor with excellent frequency char-
acteristics built-in
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Oscillator circuit with damping resistor R
D
built-
in for reduced crystal current
Standby function
• High impedance in standby mode, oscillator
stops
Low standby current
• Power-saving pull-up resistor built-in
Oscillation detector function
Frequency divider built-in (WF5025AL
×
)
• varies with version: f
O
, f
O
/2, f
O
/4, f
O
/8, f
O
/16,
f
O
/32
CMOS output duty level (1/2VDD)
50 ± 5% output duty @ 1/2VDD
30pF output load
Molybdenum-gate CMOS process
SERIES CONFIGURATION
Version
Operating
supply voltage
[V]
Oscillation
mode
Recommended
Output
operating frequency
current
range (fundamental (V
DD
= 2.5V)
[mA]
oscillation)
*1
[MHz]
Standby mode
Output
frequency
f
O
f
O
/2
2.25 to 3.6
Fundamental
20 to 50
4
f
O
/4
f
O
/8
f
O
/16
f
O
/32
2.25 to 3.6
Fundamental
20 to 100
70 to 80
2.25 to 3.6
3rd overtone
80 to 100
90 to 133
8
f
O
CMOS
Yes
Hi-Z
8
f
O
CMOS
Yes
Hi-Z
CMOS
Yes
Hi-Z
Output duty
level
Oscillator
stop
function
Output state
WF5025AL1
WF5025AL2
WF5025AL3
WF5025AL4
WF5025AL5
WF5025AL6
WF5025BL1
*2
WF5025MLA
(WF5025MLB)
WF5025MLC
*1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscil-
lator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting conditions, so the
oscillation characteristics of components must be carefully evaluated.
*2. The WF5025BL1 has a higher maximum operating frequency, hence the negative resistance is also larger than in the WF5025AL
×
devices.
Note. These versions in parentheses ( ) are under development. Please ask our Sales & Marketing section for further detail.
ORDERING INFORMATION
Device
WF5025
×××
–3
Package
Wafer form
NIPPON PRECISION CIRCUITS INC.—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
