
WF5027 series
SEIKO NPC CORPORATION —1
Crystal Oscillator Module ICs
OVERVIEW
The WF5027 series are miniature crystal oscillator module ICs. The oscillator circuit stage has voltage regula-
tor drive, significantly reducing current consumption and crystal current, compared with existing devices, and
significantly reducing the oscillator characteristics supply voltage dependency. There are 3 pad layout package
options available for optimized mounting, making these devices ideal for miniature crystal oscillators.
FEATURES
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Wide range of operating supply voltage: 1.60 to 3.63V
Regulated voltage drive oscillator circuit for reduced
power consumption and crystal drive current
Optimized low crystal drive current oscillation for
miniature crystal units
3 pad layout options for mounting
5027A
×
, M
×
, Q
×
series: for Flip Chip Bonding
5027B
×
, N
×
, R
×
series: for Wire Bonding (type I)
5027C
×
, P
×
, S
×
series: for Wire Bonding (type II)
Recommended oscillation frequency range
For fundamental oscillator
Low frequency version: 20MHz to 60MHz
High frequency version: 60MHz to 100MHz
For 3rd overtone oscillator
Low frequency version: 40MHz to 110MHz
High frequency version
*1: under development
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I
I
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*1
: 110MHz to 180MHz
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Multi-stage frequency divider for low-frequency
output support: 0.9MHz (min)
Frequency divider built-in (for fundamental oscil-
lator)
Selectable by version: f
f
O
/32, f
O
/64
40 to 85
°
C operating temperature range
Standby function
High impedance in standby mode, oscillator
stops
CMOS output duty level (1/2VDD)
50 ± 5% output duty
15pF output drive capability
Wafer form (WF5027
××
)
Chip form (CF5027
××
)
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O
, f
O
/2, f
O
/4, f
O
/8, f
O
/16,
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I
I
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I
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APPLICATIONS
I
3.2
×
2.5, 2.5
×
2.0, 2.0
×
1.6 size miniature crystal oscillator modules
ORDERING INFORMATION
Device
Package
WF5027
××
××
–4
Wafer form
CF5027
–4
Chip form