preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--1
2.5V 3rd Overtone Crystal Oscillator Module ICs
OVERVIEW
The CF5018 series are crystal oscillator ICs that operate from 2.5V. Devices are available that provide 3rd
overtone oscillation in the range 30MHz to 80MHz. They are optimized for 2.5V operation, resulting in stable
oscillator startup characteristics and output duty stability. They feature a large reduction in chip surface area
compared to existing devices, making possible the construction of small-sized crystal oscillator.
FEATURES (design target)
I
2.25 to 2.75V operating supply voltage range
I
30MHz to 80MHz oscillation frequency range
(varies with version)
I
40 to 85
C operating temperature range
I
Oscillation capacitors C
G
, C
D
built-in
I
Inverter amplifier feedback resistor built-in
I
Standby function
High impedance in standby mode, oscillator stops
I
Low standby current
Power-save pull-up resistor built-in
I
f
O
output frequency (oscillation frequency)
I
8mA output drive capability (V
DD
= 2.25V)
I
CMOS output duty level (1/2VDD)
I
50
5% output duty (at 1/2VDD)
I
30pF output load
I
Molybdenum-gate CMOS process
I
Chip form (CF5018AL
)
SERIES CONFIGURATION
ORDERING INFORMATION
Version
Operating
supply voltage
[V]
Recommended operating
frequency range
1
[MHz]
1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the
oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting condi-
tions, so the oscillation characteristics of components must be carefully evaluated.
gm ratio
Built-in capacitance [pF]
Rf
[k
]
C
G
C
D
CF5018ALA
2.25 to 2.75
30 to 36
0.50
8
15
4.7
CF5018ALB
36 to 40
0.50
3.5
CF5018ALC
40 to 50
0.75
3.5
CF5018ALD
50 to 60
1.00
3.0
CF5018ALE
60 to 80
1.50
10
3.5
Device
Package
CF5018AL
2
Chip form
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--2
PAD LAYOUT
(Unit:
m)
PIN DESCRIPTION and PAD DIMENSIONS
BLOCK DIAGRAM
Chip size: 0.72
0.73mm
Chip thickness: 220 30m
PAD size: 90m
Chip base: V
DD
level
Name
I/O
Description
Pad dimensions [m]
X
Y
INHN
I
Output state control input. High impedance when LOW (oscillator stops).
Power-saving pull-up resistor built-in.
151
277
XT
I
Amplifier input
Crystal connection pins.
Crystal is connected between XT and XTN.
238
131
XTN
O
Amplifier output
503
131
VSS
Ground
588
345
Q
O
Output. Output frequency (f
O
). High impedance in standby mode
588
598
VDD
Supply voltage
131
598
INHN = LOW active
Q
VDD
XTN
VSS
(0,0)
(720,730)
X
Y
HA5018
INHN
XT
NPC
XT
VSS
VDD
Q
C
G
C
D
R
f2
XTN
INHN
R
f1
C
f
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--3
SPECIFICATIONS
Absolute Maximum Ratings
V
SS
= 0V
Recommended Operating Conditions
V
SS
= 0V
Parameter
Symbol
Condition
Rating
Unit
Supply voltage range
V
DD
-
0.5 to +7.0
V
Input voltage range
V
IN
-
0.5 to V
DD
+ 0.5
V
Output voltage range
V
OUT
-
0.5 to V
DD
+ 0.5
V
Operating temperature range
T
opr
-
40 to +85
C
Storage temperature range
T
STG
-
65 to +150
C
Output current
I
OUT
25
mA
Parameter
Symbol
Condition
Rating
Unit
Supply voltage
V
DD
2.25 to 2.75
V
Input voltage
V
IN
V
SS
to V
DD
V
Operating temperature
T
OPR
-
40 to +85
C
Operating frequency
f
OSC
C
L
30pF
30 to 80
MHz
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--4
Electrical Characteristics
V
DD
= 2.25 to 2.75V, V
SS
= 0V, Ta =
-
40 to +85
C unless otherwise noted.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
HIGH-level output voltage
V
OH
Q: Measurement cct 1, V
DD
= 2.25V, I
OH
= 8mA
1.65
1.95
V
LOW-level output voltage
V
OL
Q: Measurement cct 1, V
DD
= 2.25V, I
OL
= 8mA
0.3
0.4
V
HIGH-level input voltage
V
IH
INHN
0.7V
DD
V
LOW-level input voltage
V
IL
INHN
0.3V
DD
V
Output leakage current
I
Z
Q: Measurement cct 2, INHN = LOW
V
OH
= V
DD
10
A
V
OL
= V
SS
10
A
Current consumption
I
DD
Measurement cct 3, load cct 1,
INHN = open, f = 80MHz
C
L
= 15pF
12
mA
C
L
= 30pF
15
mA
Standby current
I
ST
Measurement cct 3, INHN = LOW
3
A
INHN pull-up resistance
R
UP1
Measurement cct 4
2
6
12
M
R
UP2
20
100
200
k
AC feedback resistance
R
f1
Design value. A monitor pattern on a
wafer is tested.
CF5018ALA
3.99
4.7
5.41
k
CF5018ALB
2.97
3.5
4.03
k
CF5018ALC
2.97
3.5
4.03
k
CF5018ALD
2.55
3.0
3.45
k
CF5018ALE
2.97
3.5
4.03
k
DC feedback resistance
R
f2
Measurement cct 5
50
150
k
AC feedback capacitance
C
f
Design value. A monitor pattern on a wafer is tested.
8.5
10
11.5
pF
Built-in capacitance
C
G
Design value. A monitor pattern on a wafer is tested.
6.8
8
9.2
pF
C
D
Design value. A monitor pattern on a
wafer is tested.
CF5018ALA
CF5018ALB
CF5018ALC
CF5018ALD
12.7
15
17.3
pF
CF5018ALE
8.5
10
11.5
pF
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--5
Switching Characteristics
V
DD
= 2.25 to 2.75V, V
SS
= 0V, Ta =
-
40 to +85
C unless otherwise noted.
Current consumption and Output waveform with NPC's standard crystal
FUNCTIONAL DESCRIPTION
Standby Function
When INHN goes LOW, the oscillator stops and the oscillator output on Q becomes high impedance.
Power-save Pull-up Resistor
The INHN pull-up resistance changes in response to the input level (HIGH or LOW). When INHN goes LOW
(standby state), the pull-up resistance becomes large to reduce the current consumption during standby.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
Output rise time
t
r1
Measurement cct 3, load cct 1,
0.1V
DD
to 0.9V
DD
C
L
= 15pF
1.5
ns
t
r2
C
L
= 30pF
3
ns
Output fall time
t
f1
Measurement cct 3, load cct 1,
0.9V
DD
to 0.1V
DD
C
L
= 15pF
1.5
ns
t
f2
C
L
= 30pF
3
ns
Output duty cycle
1
1. The duty cycle characteristic is checked the sample chips of each production lot.
Duty1
Measurement cct 3, load cct 1,
V
DD
= 2.5V, Ta = 25
C, f = 80MHz
C
L
= 15pF
50
%
Duty2
C
L
= 30pF
50
%
Output disable delay time
2
2. Oscillator stop function is built-in. When INHN goes LOW, normal output stops. When INHN goes HIGH, normal output is not resumed until after the
oscillator start-up time has elapsed.
t
PLZ
Measurement cct 6, load cct 1, V
DD
= 2.5V, Ta = 25
C,
C
L
= 15pF
100
ns
Output enable delay time
2
t
PZL
100
ns
INHN
Q
Oscillator
HIGH (or open)
f
O
output frequency
Normal operation
LOW
High impedance
Stopped
f [MHz]
R [
]
L [mH]
Ca [fF]
Cb [pF]
30
18.62
16.24
1.733
5.337
40
20.53
11.34
1.396
3.989
50
22.17
7.40
1.370
4.105
60
15.37
3.83
1.836
5.191
70
25.42
4.18
1.254
5.170
L
Ca
R
Cb
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--6
MEASUREMENT CIRCUITS
Measurement cct 1
2Vp-p, 10MHz sine wave input signal
C1: 0.001
F
R1: 50
R2: 206
R3: 231
Measurement cct 2
Measurement cct 3
Signal
Generator
VDD
VSS
XT
Q
R1
R2
R3
V
OH
0V
Q output
V
DD
V
DD
V
OL
Q output
0V
When
measuring V
OL
When
measuring V
OH
C1
XTN
INHN
I
Z
V
OH
V
OL
V
A
I
Z
VDD
VSS
XT
Q
XTN
INHN
X'tal
I
DD
I
ST
A
VDD
VSS
XT
Q
XTN
INHN
Measurement cct 4
Measurement cct 5
Measurement cct 6
2Vp-p, 10MHz sine wave input signal
C1: 0.001
F
R1: 50
Load cct 1
I
PR
A
V
V
PR
V
DD
I
PR
(V
PR
= V
SS
)
R
UP2
=
I
PR
(V
PR
=
0.7V
DD
)
V
DD
V
PR
R
UP1
=
VDD
VSS
XT
Q
XTN
INHN
I
Rf
R
f
=
V
DD
I
Rf
A
VDD
VSS
XT
Q
XTN
INHN
Signal
Generator
VDD
VSS
XT
Q
R1
C1
XTN
INHN
Q output
C
L
(Including probe
capacitance)
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--7
Switching Time Measurement Waveform
Output duty level
Output duty cycle
Output Enable/Disable Delay
when the device is in standby, the oscillator stops. When standby is released, the oscillator starts and stable
oscillator output occurs after a short delay.
0.9V
DD
0.1V
DD
0.9V
DD
0.1V
DD
t
r
t
f
Q output
DUTY measurement
voltage (0.5V
DD
)
T
W
DUTY measurement
voltage
(
0.5V
DD
)
Q output
T
W
T
DUTY= T
W
/ T 100 (%)
Q output
INHN
V
IH
V
IL
t
PLZ
t
PZL
INHN input waveform
t
r =
t
f 10ns
preliminary
CF5018 series
NIPPON PRECISION CIRCUITS INC.--8
NP0215AE
2003.03
Please pay your attention to the following points at time of using the products shown in this document.
The products shown in this document (hereinafter "Products") are not intended to be used for the apparatus that exerts harmful influence on
human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such
use from NIPPON PRECISION CIRCUITS INC. (hereinafter "NPC"). Customers shall be solely responsible for, and indemnify and hold NPC
free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves
the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or
warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third
parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this
document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the
Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing
or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in
compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested
appropriately take steps to obtain required permissions or approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome, Koto-ku,
Tokyo 135-8430, Japan
Telephone: +81-3-3642-6661
Facsimile: +81-3-3642-6698
http://www.npc.co.jp/
Email: sales
@
npc.co.jp
PDF 
ZIP