5041 series

SEIKO NPC CORPORATION—1

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

I

Realizing frequency stability improvement with

minimal additional process

I

Temperature compensation range/ operating tem-

perature range:

−40°C to +85°C

I

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

I

Rewritable EEPROM built-in

I

6 pads: same as general clock oscillator ICs

I

Operating supply voltage range

• 5041A

××: 2.25V to 3.63V

• 5041B

×A: 1.60V to 2.25V

I

Recommended oscillation frequency range:

20MHz to 55MHz (for fundamental oscillation)

I

Frequency divider built-in:

• Frequency divider output for 0.625MHz (min)

low frequency output

I

Standby function

High-impedance in standby mode, oscillator stops

I

CMOS output

I

15pF output load

I

Pad layout for flip chip bonding

I

Wafer form (WF5041

×××)

FREQUENCY CHARACTERISTICS COMPENSATION BEFORE and AFTER ADJUSTMENT

APPLICATIONS

I

3.2mm

× 2.5mm, 2.5mm × 2.0mm, 2.0mm × 1.6mm size miniature crystal oscillator modules

I

WiMAX, WiBro, PLC and applications requiring high-stability clock oscillators

ORDERING INFORMATION

Device

Package

WF5041

×××−4

Wafer form

020

Ta [

°C]

40

60

80

100

−20

−40

−50

−40

−30

−20

−10

0

10

20

30

40

50

± 10ppm

Before compensation

After compensation