WF5027 series

SEIKO NPC CORPORATION —15

TYPICAL PERFORMANCE (for fundamental oscillator)

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

crystal used.

I

Crystal used for measurement

I

Crystal parameters

Current Consumption

Negative Resistance

Parameter

C0 [pF]

1.6

2.1

R1 [

Ω]12

10

L1

C0

R1

C1

1.5

2

2.5

3

3.5

4

0

2

4

6

8

10

1.5

2

2.5

3

3.5

4

0

2

4

6

8

10

5027

30

20

10

40

50

60

Frequency [MHz]

0

–200

–400

–600

–800

–1000

C0 = 0pF

C0 = 1pF

C0 = 2pF

5027

70

60

50

80

90

100

Frequency [MHz]

0

–200

–400

–600

–800

–1000

C0 = 0pF

C0 = 1pF

C0 = 2pF

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.