WF5028 series

SEIKO NPC CORPORATION —10

MEASUREMENT CIRCUITS

Measurement cct 1

Note: The AC characteristics are observed using an oscilloscope on

pin Q.

Measurement cct 2

XTN input signal: 1Vp-p, sine wave

C1: 0.001

R1: 50

Ω

Measurement cct 3

XTN input signal: 1Vp-p, sine wave

VDD

VSS

XT

Q

X'tal

XTN

INHN

A

(Including probe

capacitance)

0.1

µF

VDD

VSS

Q

XTN

INHN

Signal

Generator

R1

C1

or

0.1

µF

VDD

VSS

Q

XTN

Signal

Generator

50

Ω

0.001

µF

V

50

Ω

0.1

∆V

∆V

0.1

µF

50

50

Measurement cct 4

INHN has an oscillation stop function.

Measurement cct 5

Measurement cct 6

VDD

VSS

XT

Q

X'tal

XTN

INHN

V

0.1

µF

VDD

VSS

Q

INHN

A

or

0.1

µF

VDD

VSS

INHN

V

0.1

µF