CF5036 series
2.5V LVPECL Output Oscillator ICs
OVERVIEW
The CF5036 series are 2.5V operation, differential PECL output oscillator ICs. They support 50MHz to
250MHz 3rd overtone oscillation and 50MHz to 700MHz fundamental oscillation. The devices are fabricated
using a proprietary BiCMOS process, enabling a high-frequency oscillator circuit and differential LVPECL
output buffer to be incorporated on a single chip. The CF5036 series can be used to construct high-frequency
PECL output oscillators.
FEATURES
I
I
I
I
I
2.375 to 3.6V operating supply voltage range
Operating frequency range (varies with version)
• 50MHz to 700MHz fundamental oscillation
• 50MHz to 250MHz 3rd overtone oscillation
– 40 to 85°C operating temperature range
Differential LVPECL output
50Ω output load (terminated to V
CC
– 2V)
I
I
I
I
Standby function
• Outputs are high impedance when OE is LOW.
(oscillator stops)
Power-saving pull-up resistor built-in (pin OE)
BiCMOS process
Chip form (CF5036××)
SERIES CONFIGURATION
Version
CF5036G1
CF5036G2
CF5036A1
CF5036A2
CF5036B1
CF5036B2
CF5036C1
CF5036C2
CF5036D1
CF5036D2
CF5036E1
(CF5036E2)
CF5036F1
(CF5036F2)
(CF5036V1)
(CF5036V2)
(CF5036W1)
(CF5036W2)
Oscillator constants determined
by external components
(R
f
, C
XIN
, C
XOUT
)
Fundamental
Fundamental
or
3rd overtone
Oscillation mode
Recommended operating
frequency range
*1
[MHz]
50 to 80
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
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
f
O
f
O
/2
80 to 120
100 to 180
150 to 250
250 to 400
400 to 600
600 to 700
80 to 400
400 to 700
*1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentica-
tion. However, the oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal
characteristics and mounting conditions, so the oscillation characteristics of components must be carefully evaluated.
Note. These versions in parentheses ( ) are under development. Please ask our Sales & Marketing section for further detail.
ORDERING INFORMATION
Device
CF5036××–1
Package
Chip form
SEIKO NPC CORPORATION —1
CF5036 series
PAD LAYOUT
(Unit:
µm)
OUT OUTN VCC2 OE
8
7
6
5
(1100,1300)
Y
TEST
9
DB5036
1
2
3
4
(0,0)
VCC
XIN XOUT GND
X
Chip size: 1.10
×
1.30mm
Chip thickness: 300 ± 30µm
PAD size: 150µm
×
100µm (VCC, OUT, OUTN pins)
100µm
×
100µm (excluding VCC, OUT, OUTN pins)
Chip base: GND potential
Note: The TEST pin is not used during normal operation.
PIN DESCRIPTION and PAD DIMENSIONS
Pad dimensions [µm]
Pad No.
1
2
3
4
5
6
7
8
9
Name
VCC
XIN
XOUT
GND
OE
VCC2
OUTN
OUT
TEST
I/O
–
I
O
–
I
–
O
O
I
(+) 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.
(+) output buffer supply pin
Output pin (complementary)
Output pin (true)
IC test pin. Leave open circuit for normal operation.
Function
X
160
511
740
965
896
756
523
244
136
Y
130
130
130
130
1170
1170
1170
1170
678
SEIKO NPC CORPORATION —2
CF5036 series
BLOCK DIAGRAM
VCC
XIN
Colpitts
OSC
1/2
PECL
VCC2
OUT
OUTN
XOUT
OE
GND
OSCILLATOR CIRCUIT CONSTANT
The CF5036 series oscillator setting varies with device version to optimize characteristics over the recom-
mended operating frequency range.
Version
CF5036G×
CF5036A×
CF5036B×
CF5036C×
CF5036D×
CF5036E×
CF5036F×
CF5036V×
CF5036W×
Setting by external components
(C0 cancel is not built-in.)
Fundamental
Fundamental
or
3rd overtone
Oscillation mode
Built-in capacitance
*1 *2
[pF]
C
XIN
16
12
8
6
5
5
4
(4)
(4)
C
XOUT
16
12
8
6
5
5
4
(4)
(4)
Recommended operating
frequency range
*3
[MHz]
50 to 80
80 to 120
100 to 180
150 to 250
250 to 400
400 to 600
600 to 700
80 to 400
400 to 700
*1. The oscillator internal capacitance values includes parasitic capacitance.
*2. Values in parentheses ( ) are provisional only.
*3. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. How-
ever, the oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics
and mounting conditions, so the oscillation characteristics of components must be carefully evaluated.
Oscillator Equivalent Circuit
C0 cancel
C
XIN
XIN
R
PD1
R
f
C
XOUT
XOUT
Oscillator block equivalent circuit
The CF5036 series oscillator circuit has a C0 cancel circuit built-in to improve the oscillator margin. If power is applied when there is an
open circuit between XIN and XOUT, self oscillation may occur, which is not abnormal. Users should confirm that the oscillator operates
normally when a crystal unit is connected.
SEIKO NPC CORPORATION —3
CF5036 series
SPECIFICATIONS
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
Chip form
Conditions
Rating
−0.5
to +5.0
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
R
L
f
OUT
Terminated to V
CC
−
2V
Conditions
Min
2.375
GND
−40
49.5
25
Typ
–
–
+25
50
–
Max
3.6
V
CC
+85
50.5
700
V
V
°C
Ω
MHz
Unit
SEIKO NPC CORPORATION —4
CF5036 series
Electrical Characteristics
3.3V operation
V
CC
= 3.0 to 3.6V, GND = 0V, Ta =
−40
to +85°C unless otherwise noted.
Rating
Parameter
Symbol
Conditions
Min
Current consumption 1
Current consumption 2
HIGH-level output voltage
I
EE1
I
EE2
V
OH
Measurement cct. 1,
OE = open
5036G×, A×, B×, C×, D×
5036E×, F×
–
–
–
2.275
2.215
1.490
1.470
–
0.7V
CC
–
−2
−20
12
Typ
55
64
–
2.350
2.295
1.600
1.605
–
–
–
–
–
24
Max
88
98
30
2.420
2.420
1.680
1.745
10
–
0.3V
CC
−20
−200
48
mA
mA
µA
V
V
V
V
µA
V
V
µA
µA
kΩ
Unit
Measurement cct. 1, OE = LOW
Ta = 0 to 85
°
C
Measurement cct. 2,
V
CC
= 3.3V,
OE = open,
OUT, OUTN pins
Ta = –40
°
C
Ta = 0 to 85°C
Ta = –40°C
Measurement cct. 3, OE = LOW, OUT, OUTN pins
Measurement cct. 1, OE pin
Measurement cct. 1, OE pin
Measurement cct. 1, V
IL
= 0V, OE pin
Measurement cct. 1, V
IL
= 0.7V
CC
, OE pin
Measurement cct. 3, XIN pin
LOW-level output voltage
Output leakage current
HIGH-level input voltage
LOW-level input voltage
LOW-level input current 1
LOW-level input current 2
Pull-down resistance 1
V
OL
I
Z
V
IH
V
IL
I
IL1
I
IL2
R
PD1
2.5V operation
V
CC
= 2.375 to 2.625V, GND = 0V, Ta =
−40
to +85°C unless otherwise noted.
Rating
Parameter
Symbol
Conditions
Min
Current consumption 1
Current consumption 2
HIGH-level output voltage
I
EE1
I
EE2
V
OH
Measurement cct. 1,
OE = open
5036G×, A×, B×, C×, D×
5036E×, F×
–
–
–
1.475
1.415
0.690
0.670
–
0.7V
CC
–
−2
−10
12
Typ
55
64
–
1.550
1.495
0.800
0.805
–
–
–
–
–
24
Max
88
98
30
1.760
1.620
1.095
1.195
10
–
0.3V
CC
−20
−150
48
mA
mA
µA
V
V
V
V
µA
V
V
µA
µA
kΩ
Unit
Measurement cct. 1, OE = LOW
Ta = 0 to 85
°
C
Measurement cct. 2,
V
CC
= 2.5V,
OE = open,
OUT, OUTN pins
Ta = –40
°
C
Ta = 0 to 85°C
Ta = –40°C
Measurement cct. 3, OE = LOW, OUT, OUTN pins
Measurement cct. 1, OE pin
Measurement cct. 1, OE pin
Measurement cct. 1, V
IL
= 0V, OE pin
Measurement cct. 1, V
IL
= 0.7V
CC
, OE pin
Measurement cct. 3, XIN pin
LOW-level output voltage
Output leakage current
HIGH-level input voltage
LOW-level input voltage
LOW-level input current 1
LOW-level input current 2
Pull-down resistance 1
V
OL
I
Z
V
IH
V
IL
I
IL1
I
IL2
R
PD1
SEIKO NPC CORPORATION —5
Analogue and Mixed Signal
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