CF5034 series
350MHz PECL-output Oscillator ICs
OVERVIEW
The CF5034 series are differential LVPECL output oscillator ICs. They are made using a BiCMOS process
which allows high-frequency oscillator circuits and differential LVPECL output circuits to be fabricated on a
single chip. Two oscillator modes are supported—350MHz maximum fundamental oscillation mode, and
80MHz to 160MHz 3rd overtone oscillation mode.
The CF5034 series devices require only the connection of a crystal to realize a differential LVPECL output
oscillator circuit.
FEATURES
I
I
I
I
3.3 ± 0.3V operating supply voltage
Oscillator frequency range
• 80MHz to 350MHz fundamental oscillation
mode
• 80MHz to 160MHz 3rd overtone oscillation
mode
40MHz to 350MHz output frequency range
Differential LVPECL output
I
I
I
I
I
f
O
(oscillator frequency) or f
O
/2 output frequency,
determined by internal connection
50 ± 5% output duty (measured at output crossing
point)
Standby function: outputs are high impedance
when OE is LOW.
Power-saving pull-up resistor built-in (pin OE)
Chip form (CF5034××)
SERIES LINEUP
Version
CF5034AA
250 to 350
CF5034AB
Fundamental
CF5034BA
160 to 250
CF5034BB
CF5034DA
–
CF5034DB
CF5034LA
125 to 160
CF5034LB
CF5034MA
CF5034MB
Fundamental or
3rd overtone
80 to 125
80 to 350
(external capacitors required)
Oscillation mode
Recommended oscillator
frequency [MHz]
1
Output frequency
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
1. The recommended oscillator frequency criteria is based on the negative resistance characteristics and cutoff frequency. Note that this may change
depending on the crystal characteristics, thus sufficient allowance should be made.
ORDERING INFORMATION
Device
CF5034××−1
Package
Chip form
NIPPON PRECISION CIRCUITS INC.—1
CF5034 series
PAD LAYOUT
(Unit: µm)
OUTN
8
OUT
9
TEST
VCC2 OE
(1160,1310)
DA5034
7
6
5
Y
1
2
3
4
(0,0)
VCC
XIN XOUT GND
X
Chip size: 1.16
×
1.31mm
Chip thickness: 300 ± 30µm
Chip base: GND potential
PAD DESCRIPTION AND DIMENSIONS
Pad dimensions [µm]
Pad No.
1
2
3
4
5
6
7
8
9
Name
VCC
XIN
XOUT
GND
OE
TEST
VCC2
OUTN
OUT
I/O
–
I
O
–
I
I
–
O
O
Supply pin
Oscillator input pin
Oscillator output pin
Ground pin
Output enable pin. Outputs are high impedance when LOW (oscillator
stopped). Power-saving pull-up resistor built-in.
IC test pin. Leave open circuit for normal operation.
Output buffer supply pin
Output pin (complementary)
Output pin (true)
Function
X
146
536
809
1015
979
839
690
449
216
Y
145
145
145
145
1165
1165
1165
1165
1165
BLOCK DIAGRAM
OE
VCC2
VCC
R
f
1/2
ECL
OUT
OUTN
XIN
C
XIN
C
XOUT
GND
XOUT
NIPPON PRECISION CIRCUITS INC.—2
CF5034 series
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage range
Input voltage range
Output voltage range
Storage temperature range
Symbol
V
CC
V
IN
V
OUT
T
STG
Conditions
Rating
−0.5
to 7.0
GND
−
0.5 to V
CC
+ 0.5
GND
−
0.5 to V
CC
+ 0.5
−65
to 150
Unit
V
V
V
°C
RECOMMENDED OPERATING CONDITIONS
Rating
Parameter
Operating supply voltage
Input voltage
Operating temperature
Output load
Output frequency
Symbol
V
CC
V
IN
T
OPR
RL
f
OUT
Terminated to V
CC
−
2V
Conditions
Min
3.0
GND
−40
–
40
Typ
3.3
–
25
50
–
Max
3.6
V
CC
85
–
350
V
V
°C
Ω
MHz
Unit
ELECTRICAL CHARACTERISTICS
DC Characteristics
Recommended operating conditions unless otherwise noted.
Rating
Parameter
Current consumption 1
Current consumption 2
OUT/OUTN HIGH-level output voltage
Symbol
I
EE1
I
EE2
V
OH
Conditions
Min
Measurement cct. 1, OE = open
Measurement cct. 1, OE = LOW
Ta = 0 to 85°C
Measurement cct. 4,
V
CC
= 3.3V,
OE = open
Ta = – 40°C
Ta = 0 to 85°C
Ta = – 40°C
Measurement cct. 2, OE = LOW
Measurement cct. 1
Measurement cct. 1
Measurement cct. 2, V
IL
= 0V
Measurement cct. 2, V
IL
= 0.7V
CC
–
–
2.275
2.215
1.490
1.470
–
0.7V
CC
–
−2
−20
Typ
55
–
2.350
2.295
1.600
1.605
–
–
–
–
–
Max
88
30
2.420
2.420
1.680
1.745
10
–
0.3V
CC
−20
−200
mA
µA
V
V
V
V
µA
V
V
µA
µA
Unit
OUT/OUTN LOW-level output voltage
OUT/OUTN output leakage current
OE HIGH-level input voltage
OE LOW-level input voltage
OE LOW-level input current 1
OE LOW-level input current 2
V
OL
I
Z
V
IH
V
IL
I
IL1
I
IL2
NIPPON PRECISION CIRCUITS INC.—3
CF5034 series
AC Characteristics
Recommended operating conditions unless otherwise noted.
Rating
Parameter
Symbol
Conditions
Min
Output duty cycle 1
Duty 1
Measurement cct. 3,
measured at output crossing point,
Ta = 25°C, V
CC
= 3.3V
Measurement cct. 3,
measured at 50% output swing,
Ta = 25°C, V
CC
= 3.3V
Measurement cct. 1, Ta = T
OPR
, f = 350MHz,
Peak to peak of output waveform
Measurement cct. 3,
20 to 80% output swing
Measurement cct. 3,
80 to 20% output swing
Measurement cct. 1, Ta = 25°C
Measurement cct. 1, Ta = 25°C
45
Typ
–
Max
55
%
Unit
Output duty cycle 2
Duty 2
45
–
55
%
Output swing
1
Output rise time
Output fall time
Output enable time
2
Output disable time
2
V
Opp
t
r
t
f
t
OE
t
OD
0.4
–
–
–
–
–
0.5
0.5
–
–
–
1
1
200
200
V
ns
ns
ns
ns
1. The said values are measured by using the NPC standard jig.
2. The built-in oscillator stop function does not operate with normal output immediately when OE goes HIGH. Instead, normal output occurs after the
oscillator startup time has elapsed.
t
r
OUTN
OUT
t
f
80%
20%
V
Opp
V
DD
V
OH
V
OL
V
DD
– 2V
t
W
t
PER
DUTY =
t
W
/
t
PER
100
t
OD
OE
t
OE
V
IH
V
SS
V
DD
V
IL
V
SS
OE input waveform
t
r
=
t
f
10ns
Timing chart
NIPPON PRECISION CIRCUITS INC.—4
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: 50Ω, 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
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