WF5025 series
Crystal Oscillator Module ICs
OVERVIEW
The WF5025 series are miniature crystal oscillator module ICs. They feature a damping resistor R matched to
D
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
ꢀ Pad layout optimized for flip chip mounting
ꢀ Miniature-crystal matched oscillator characteristics
ꢀ Operating supply voltage range
ꢀ Oscillator circuit with damping resistor R built-
in for reduced crystal current
ꢀ Standby function
D
• 2.5V operation: 2.25 to 2.75V
• 3.0V operation: 2.7 to 3.6V
• High impedance in standby mode, oscillator
stops
ꢀ Recommended operating frequency range
• For fundamental oscillator
ꢀ Low standby current
• Power-saving pull-up resistor built-in
ꢀ Oscillation detector function
ꢀ Frequency divider built-in (WF5025AL×)
- WF5025AL×: 20MHz to 50MHz
- WF5025BL1: 20MHz to 100MHz
• For 3rd overtone oscillator
• varies with version: f , f /2, f /4, f /8, f /16,
O
O
O
O
O
- WF5025ML×: 70MHz to 133MHz
ꢀ −40 to 85°C operating temperature range
ꢀ Oscillator capacitor with excellent frequency char-
acteristics built-in
f /32
O
ꢀ CMOS output duty level (1/2VDD)
ꢀ 50 5ꢀ output duty ꢁ 1/2VDD
ꢀ 30pF output load
ꢀ Molybdenum-gate CMOS process
SERIES CONFIGURATION
Standby mode
Recommended
Operating
Output
current
range (fundamental (V = 2.5V) frequency
Oscillation
mode
operating frequency
Output
Output duty
level
Oscillator
stop
function
Version
supply voltage
[V]
DD
Output state
*1
oscillation) [MHz]
[mA]
WF5025AL1
WF5025AL2
WF5025AL3
WF5025AL4
WF5025AL5
WF5025AL6
f
O
f /2
O
f /4
O
2.25 to 3.6
Fundamental
20 to 50
4
CMOS
Yes
Hi-Z
f /8
O
f /16
O
f /32
O
*2
WF5025BL1
WF5025MLA
(WF5025MLB)
WF5025MLC
2.25 to 3.6
2.25 to 3.6
Fundamental
3rd overtone
20 to 100
70 to 80
8
8
f
CMOS
CMOS
Yes
Yes
Hi-Z
Hi-Z
O
80 to 100
90 to 133
f
O
*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
Package
WF5025×××–3
Wafer form
NIPPON PRECISION CIRCUITS INC.—1