WF5028 datasheet(11/13 Pages) NPC

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WF5028 series

SEIKO NPC CORPORATION —11

TYPICAL PERFORMANCE

The following characteristics measured using the crystal below. Note that the characteristics will vary with the

crystal used.

Crystal used for measurement

Crystal parameters

Current Consumption

Negative Resistance

Frequency Deviation by Supply Voltage

Change

Drive Level

Parameter

fO = 48MHz

C0 [pF]

1.6

R1 [

Ω]12

5028

×1, fOSC = 48MHz, fOUT = 48MHz, Ta = 25°C

0.5

1.0

1.5

2.0

VDD [V]

CL = 15pF

No load

5028

×1, VDD = 0.9V, Ta = 25°C

Characteristics are measured with a capacitance C0, representing

the crystal equivalent circuit C0 capacitance, connected between

the XT and XTN pins. Measurements are performed with Agilent

4396B using the NPC test jig. Characteristics may vary with

measurement jig and measurement conditions.

−600

−400

−200

−800

−1000

204060

100

Frequency [MHz]

C0 = 0pF

C0 = 1pF

C0 = 2pF

5028

×1, CL = 15pF, 1.2V standard, Ta = 25°C

0.5

1.0

1.5

2.0

VDD [V]

f = 48MHz

−4

−8

−12

5028

×1, fOSC = 48MHz, Ta = 25°C

0.5

1.0

1.5

2.0

VDD [V]

f = 48MHz

100

200

150

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