NJM2555 IC Datasheet

NJM2555 Datasheet PDF, Equivalent


Part Number

NJM2555

Description

622MHz VCXO IC

Manufacture

New Japan Radio

Total Page 3 Pages
Datasheet
Download NJM2555 Datasheet


NJM2555
NJM2555
622MHz VCXO IC
sGENERAL DESCRIPTION
sPACKAGE OUTLINE
The NJM2555 is a 622.08MHz VCXO (Voltage Controlled Crystal
Oscillator) IC designed for optical fiber telecommunication systems, using
NewJRC superior Bipolar technology, which consists of an oscillation
amplifier, a variable capacitor diode, a quadruple (x4) frequency circuit, high
pass filter, and limiter amplifier. The NJM2555 generate x4 frequency to add
the only 155.52MHz crystal and LC filter, and the output is differential
LVPECL equivalent. The recommended input crystal frequency is from 120 NJM2555C-C NJM2555V
to 160 MHz. The jitter performance and phase noise is very low based on
excellent oscillation circuit. This can be applied to optical communication,
especially the WDM system.
sFEATURES
qOperating Voltage
qFrequency range of Crystal
qOutput Frequency Range
qOutput Level
qA Variable Capacitor on chip
qBipolar Technology
qPackage
+3.0V to +3.6V
155.52 MHz typ. (120 to 160 MHz)
622.08 MHz typ. (480 to 640 MHz)
differential LVPECL equivalent
Die and SSOP-10
sTERMINAL DESCRIPTION
No. Symbol
Function
1 VOSC OSC Supply Voltage
2 XT1 Quartz Crystal Connecting terminal 1
3 XT2 Quartz Crystal Connecting terminal 2
4 VVC Frequency Control
5 GND GND=0V
6 FOUT1 Frequency Output 1
7 FOUT2 Frequency Output 2
8 T1 Tunable Filter Terminal 1
9 T2 Tunable Filter Terminal 2
10 VCC VCC=3.3V
Starting Point :Die Center
Chip Size
:1.60x2.00[mm]
Chip Thickness :260 ±20[um]
Pad Size
:90x90[um]
X
550
140
-80
-435
-635
-635
-395
165
405
635
Y
835
835
835
835
835
-835
-835
-835
-835
-835
unit:[um]
sCOORDINATES
54
67
1
2
3
4
5
32
8 9 10
sBLOCK DIAGRAM
10
9
8
7
6
VOSC
VCC
XT1
XT2
OSC
BUFFER
AMP
HIGH
PASS
FILTER
LIMITER
AMP
T2
T1
VVC
GND
OUTPUT
BUFFER
FOUT2
FOUT1
Version 3.6 2003/08/22 ( 1 / 3 )

NJM2555
NJM2555
sABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
Symbols
VCC
PD
Topr
Tstg
Ratings
-0.3 to 5.0
250 (SSOP-10)
-40 to +85
-55 to +125
(Ta=25°C)
Unit
V
mW
°C
°C
sELECTRICAL CHARACTERISTICS
Parameter
Symbol
Supply Voltage
Operating Current
Power Consumption
Maximum VC Range
Minimum VC Range
VCC
ICC
PD
VCONTH
VCONTL
Conditions
-
FOUT=622MHz
FOUT=622MHz
-
-
MIN.
3.0
40
120
VCC-0.3
-0.3
TYP.
3.3
50
165
VCC
0
(Ta=25°C)
MAX.
Unit
3.6 V
60 mA
216 mW
VCC+0.3
0.3
V
V
sREFERENTIAL DATA
(VCC=VOSC=3.3V, Ta=25°C)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Min.: 120MHz crystal
Output Frequency
FOUT Typ.: 155.5MHz crystal
480
622
640 MHz
Max.: 160MHz crystal
Frequency Pull Range
Output Level
Lower & Higher
Harmonics D/U Ratio
FCONT
POUT
FDU
Note 1)
50 ohm load
50 ohm load Note 2)
±90
-1.5
-20
±100
1.5
-25
±120
4.5
-
ppm
dBm
dBc
Symmetry
SYM 50 ohm load
45 50 55 %
Jitter
JITTER 50 ohm load
5 9 16 ps rms
Note 1) Frequency Pull Range is determined by using 155.5MHz quartz crystal.
The parameters are as follows;
L1=0.135mH, R1=15.22, C1=7.72fF, Co=2.3pF
Note 2) Tunable Filters are connected at T1 & T2 terminals.
L1 R1
Co
C1
sTEST CIRCUIT & BLOCK DIAGRAM
VOSC 1
XT1
X'tal
180nH XT2
OSC
Buffer
AMP
High
Pass
Filter
LIMITER
AMP
VCC
1nF
VCC
T2
13.6p
12nH
T1 5pF
VVC
VVC 1nF
GND
1nF (Type: 033)
1000pF (Type: 1005)
Output
Buffer
FOUT2
1000pF
1000pF
FOUT1
FOUT
Version 3.6 2003/08/22 ( 2 / 3 )


Features NJM2555 622MHz VCXO IC sGENERAL DESCRI PTION sPACKAGE OUTLINE The NJM2555 is a 622.08MHz VCXO (Voltage Controlled C rystal Oscillator) IC designed for opt ical fiber telecommunication systems, u sing NewJRC superior Bipolar technolog y, which consists of an oscillation am plifier, a variable capacitor diode, a quadruple (x4) frequency circuit, high pass filter, and limiter amplifier. Th e NJM2555 generate x4 frequency to add the only 155.52MHz crystal and LC filt er, and the output is differential LVP ECL equivalent. The recommended input c rystal frequency is from 120 NJM2555C-C NJM2555V to 160 MHz. The jitter perfo rmance and phase noise is very low base d on excellent oscillation circuit. Th is can be applied to optical communicat ion, especially the WDM system. sFEAT URES qOperating Voltage qFrequency rang e of Crystal qOutput Frequency Range qO utput Level qA Variable Capacitor on ch ip qBipolar Technology qPackage +3.0V to +3.6V 155.52 MHz typ. (120 to 160 MHz) 622.08 MHz typ. (480 .
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