CF5015 series
MEASUREMENT CIRCUITS
Measurement cct 1
Measurement cct 4
When
measuring VOL
R3
R2
C1
VDD
XT
VDD
Signal
Generator
XT
VDD
Q
RUP1 =
RUP2 =
Q
IPR
XTN
INHN
R1
XTN
INHN
(VPR = VSS)
VSS
When
measuring VOH
VSS
VDD VPR
IPR
V
(VPR = 0.7VDD)
VPR
VDD
VOH
0V
Q output
IPR
A
VDD
VOL
0V
Q output
2Vp-p, 10MHz sine wave input signal
C1: 0.001µF
R1: 50Ω
R2: 41ꢀΩ (2.5V operation)
525Ω (ꢀV operation)
488Ω (5V operation)
Rꢀ: 462Ω (2.5V operation)
575Ω (ꢀV operation)
512Ω (5V operation)
Measurement cct 5
VDD
XT
VDD
Rf =
Measurement cct 2
Q
IRf
XTN
INHN
VSS
A
I
Z
VDD
XT
IRf
IZ
Q
A
XTN
V
OH
INHN
VSS
V
VOL
Measurement cct 6
C1
VDD
Signal
Generator
XT
Q
Measurement cct 3
XTN
INHN
R1
VSS
IDD
IST
A
VDD
XT
X'tal
2Vp-p, 10MHz sine wave input signal
C1: 0.001µF
R1: 50Ω
Q
XTN
INHN
VSS
Load cct 1
Q output
CL
(Including probe
capacitance)
SEIKO NPC CORPORATION —8
NPC [ NIPPON PRECISION CIRCUITS INC ]
