CF5034 series
FUNCTIONAL DESCRIPTION
Standby Function
When OE goes LOW, the oscillator stops and the
output pins (OUT, OUTN) become high impedance.
OE
HIGH (or open)
LOW
OUT, OUTN
Either f
O
or f
O
/2
High impedance
Oscillator
Normal operation
Stopped
Power-saving Pull-up Resistor
The OE pin pull-up resistance changes in value in
response to the input level (HIGH or LOW). When
OE is LOW (standby state), the pull-up resistance
increases, thereby decreasing the current consump-
tion.
MEASUREMENT CIRCUITS
Measurement Circuit 1
Measurement Circuit 3
A
I
EE1,
I
EE2
VCC
XIN
R1
V
T
OE
OUTN
R1
GND
V
OE
XOUT
OUTN
R1
GND
V
T
VCC2
R1
OUT
Signal
Generator
C1
VCC
XIN
VCC2
R1
OUT
XIN input signal 500mVp-p, sine wave
C1: 0.001µF
R1: 50Ω
V
T
: V
CC
−
2V
V
OE
: V
CC
, V
IH
, V
IL
R1: 50
Ω
, V
T
: V
CC
−
2V
Measurement Circuit 4
Measurement Circuit 2
VCC
XIN
VCC2
R1
OUT
V
T
XOUT
OUTN
R1
TEST
GND
VCC
VCC2
OUT
A
A
0.7V
CC
OE
OUTN
GND
A
R1: 50
Ω
, V
T
: V
CC
−
2V
XOUT = HIGH: OUT pin is fixed HIGH (V
OH
).
OUTN pin is fixed LOW (V
OL
).
XOUT = LOW: OUT pin is fixed LOW (V
OL
).
OUTN pin is fixed HIGH (V
OH
).
NIPPON PRECISION CIRCUITS INC.—5
NPC [ NIPPON PRECISION CIRCUITS INC ]
