5041 series
High-stability Crystal Oscillator IC with Frequency Adjustment Function
OVERVIEW
The 5041 series are high-stability clock oscillator ICs with built-in frequency adjustment functions. The
frequency adjustment functions can be optimized, by the addition of a minimal adjustment process, to improve
the frequency stability. The function is implemented using frequency adjustment data written to a built-in
EEPROM over a 1-wire serial interface. The ICs are ideal for compact crystal oscillators for use in applications
such as WiMAX (Worldwide Interoperability for Microwave Access) and PLC (Power Line Communication)
that require high frequency stability in the order of
±
30 to
±
10ppm. They use a pad layout suitable for flip chip
bonding mounting.
FEATURES
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Realizing frequency stability improvement with
minimal additional process
Temperature compensation range/ operating tem-
perature range:
−
40
°
C to +85
°
C
Frequency adjustment functions built-in
• Frequency-temperature characteristics compen-
sation function
AT-cut crystal, 3rd order harmonic frequency-
temperature characteristics compensation, with
independent low-temperature and high-temper-
ature range compensation settings
- Center frequency adjustment function
- Temperature rotation compensation function
- Low-temperature characteristics compensation
- High-temperature characteristics compensation
Rewritable EEPROM built-in
6 pads: same as general clock oscillator ICs
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Operating supply voltage range
• 5041A
××
: 2.25V to 3.63V
• 5041B
×
A: 1.60V to 2.25V
Recommended oscillation frequency range:
20MHz to 55MHz (for fundamental oscillation)
Frequency divider built-in:
• Selectable by version: f
O
, f
O
/2, f
O
/4, f
O
/8, f
O
/16,
f
O
/32
• Frequency divider output for 0.625MHz (min)
low frequency output
Standby function
High-impedance in standby mode, oscillator stops
CMOS output
15pF output load
Pad layout for flip chip bonding
Wafer form (WF5041
×××
)
FREQUENCY CHARACTERISTICS COMPENSATION BEFORE and AFTER ADJUSTMENT
50
40
30
20
∆f/f
[ppm]
10
0
−10
−20
−30
−40
−50
−40 −20
0
20
40
Ta [°C]
60
80
100
After compensation
±
10ppm
Before compensation
APPLICATIONS
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3.2mm
×
2.5mm, 2.5mm
×
2.0mm, 2.0mm
×
1.6mm size miniature crystal oscillator modules
WiMAX, WiBro, PLC and applications requiring high-stability clock oscillators
ORDERING INFORMATION
Device
WF5041
×××−
4
Package
Wafer form
SEIKO NPC CORPORATION—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
