Model 356C
Features
Advanced PLL HCMOS VCXO
Ceramic Surface Mount Package
Low Phase Jitter Performance, 600fs Typical
Advanced PLL Design w/ Low Fundamental Crystal
Frequency Range 10 – 250MHz *
+2.5V or +3.3V Operation
Output Enable Standard
Tape and Reel Packaging, EIA-418
Broadcast Video Systems
Storage Area Networking
Broadband Access
Phase-Locked Loop
Networking Equipment
Ethernet/GbE/SyncE
Fiber Channel
Test and Measurement
Part Dimensions:
7.0 × 5.0 × 1.85mm
•
174.2mg
Applications
Standard Frequencies
- 25.00MHz
- 100.00MHz
- 50.00MHz
- 122.88MHz
- 74.25MHz
- 125.00MHz
- 77.76MHz
- 148.50MHz
- 155.52MHz
- 156.25MHz
- 200.00MHz
- 250.00MHz
* See Page 7 for additional developed frequencies.
Check with factory for availability of frequencies not listed.
Description
CTS Model 356C is a low cost, high performance PLL voltage controlled oscillator supporting HCMOS output.
Employing the latest IC technology, M356C has excellent stability and low phase jitter performance.
Ordering Information
Model
356
Output
Type
C
Frequency Code
[MHz]
XXX or XXXX
Absolute
Pull Range
B
Frequency
Stability
3
Temperature
Range
I
Supply
Voltage
3
Packaging
T
Code
C
Output
HCMOS
Code
B
APR
±50ppm
Code Temp. Range
-20°C to +70°C
C
-40°C to +85°C
I
Packing
Code
1k pcs./reel
T
Code
Frequency
Product Frequency Code
1
Code
5
4
3
Stability
±25ppm
2
±30ppm
±50ppm
Code
2
3
Voltage
+2.5Vdc
+3.3Vdc
Notes:
1] Refer to document 016-1454-0, Frequency Code Tables.
3-digits for frequencies <100MHz, 4-digits for frequencies 100MHz or greater.
2] Check factory availability when paired with "I" temperature code.
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
This product is specified for use only in standard commercial applications. Supplier disclaims all express and implied warranties and liability in connection with any use of this
product in any non-commercial applications or in any application that may expose the product to conditions that are outside of the tolerances provided in its specification.
DOC# 008-0345-1 Rev. A
Page 1 of 7
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Advanced PLL HCMOS VCXO
Model 356C
Electrical Specifications
Operating Conditions
P ARAMETER
Maximum Supply Voltage
Maximum Control Voltage
Supply Voltage
Supply Current
O perating Temperature
Storage Temperature
SYMBO L
V
CC
V
C
V
CC
I
CC
T
A
T
STG
CO NDITIO NS
-
V
CC
= +2.5V
V
CC
= +3.3V
±5%
Maximum Load
-
-
MIN
-0.5
-0.5
-0.5
2.375
3.135
-
-20
-40
-55
TYP
-
-
-
2.5
3.3
20
+25
-
MAX
4.0
3.0
3.8
2.625
3.465
65
+70
+85
+125
UNIT
V
V
V
mA
°C
°C
Frequency Stability
P ARAMETER
Frequenc y Range
Frequenc y Stability
[Note 1]
SYMBO L
f
O
Δf/f
O
APR
Δf/f
25
CO NDITIO NS
-
-
-
First Year @ +25°C, nominal V
CC
MIN
TYP
10 - 250
25, 30 or 50
MAX
UNIT
MHz
±ppm
Absolute P ull Range
[Note 2]
50
-3
-
-
-
3
±ppm
ppm
Aging
1.] Inclusive of initial tolerance at time of shipment, changes in supply voltage, load, temperature and 1st year aging.
2.] Minimum guaranteed frequency shift from f
O
over variations in temperature, aging, power supply and load.
Output Parameters
P ARAMETER
O utput Type
O utput Load
O utput Voltage Levels
O utput Duty Cyc le
Rise and Fall Time
Start Up Time
Enable Func tion [Tri-State]
Enable Input Voltage
Disable Input Voltage
Disable Current
Enable Time
P hase Jitter, RMS
P eriod Jitter, RMS
P eriod Jitter, pk-pk
V
IH
V
IL
I
IL
T
PLZ
tjrms
pjrms
pjpk-pk
Pin 2 Logic '1', Output Enabled
Pin 2 Logic '0', Output Disabled
Pin 2 Logic '0', Output Disabled
Pin 2 Logic '1', Output Enabled
Bandwidth 12 kHz - 20 MHz
-
-
0.7V
CC
-
-
-
-
-
-
-
-
16
-
600
3.0
30
-
0.3V
CC
22
200
<1000
-
-
V
V
mA
ns
fs
ps
ps
SYMBO L
-
C
L
V
OH
V
OL
SYM
T
R
, T
F
T
S
CO NDITIO NS
-
-
CMOS Load
@ 50% Level
@ 20%/80% Levels, C
L
= 15pF
Application of V
CC
-
0.9V
CC
-
45
-
-
MIN
TYP
HCMO S
-
-
-
-
5
3
15
-
0.1V
CC
55
10
5
MAX
UNIT
-
pF
V
%
ns
ms
DOC# 008-0345-1 Rev. A
Page 2 of 7
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Advanced PLL HCMOS VCXO
Model 356C
Electrical Specifications
Control Voltage
P ARAMETER
Control Voltage
SYMBO L
V
C
CO NDITIO NS
V
CC
= 2.5V
V
CC
= 3.3V
V
C
= 0.2V
Frequenc y Deviation
Δf/f
O
V
C
= 2.3V
V
C
= 0.3V
V
C
= 3.0V
Linearity
Gain Transfer
Input Impedanc e
Modulation Roll-off
Transfer Func tion
L
K
V
Z
Vc
-
-
Best Straight Line Fit
Pull Sensitivity; @ +1.25V, +25°C
Pull Sensitivity; @ +1.65V, +25°C
-
@ -3dB
-
-
-
1
10
MIN
0.2
0.3
TYP
1.25
1.65
-60 to -180
60 to 180
-60 to -180
60 to 180
-
80
-
-
Positive
±15
260
-
-
MAX
2.3
3.0
UNIT
V
ppm
ppm
%
ppm/V
MOhms
kHz
-
Enable Truth Table
Pin 2
Logic ‘1’
Open
Logic ‘0’
Pin 4
Output
Output
High Imp.
Test Circuit
HCMOS
Output Waveform
HCMOS
DOC# 008-0345-1 Rev. A
Page 3 of 7
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Advanced PLL HCMOS VCXO
Model 356C
Electrical Specifications
Performance Data
Phase Noise [typical]
125MHz, HCMOS, V
CC
= +3.3V, V
C
= +1.65V, T
A
= +25°C
Phase Noise Tabulated
125MHz, HCMOS, V
CC
= +3.3V, V
C
= +1.65V, T
A
= +25°C
P ARAMETER
HCMO S @ 1 2 5 .0 0 MHz
P hase Noise
Single Side Band
@ 10Hz
@ 100Hz
@ 1kHz
-
@ 10kHz
@ 100kHz
@ 1MHz
@ 10MHz
@ 20MHz
P hase Jitter, RMS
tjrms
-57.8277
-83.0438
-107.5582
-124.0745 dBc/Hz
-127.7532
-139.0681
-156.3500
-157.3626
fs
SYMBO L
CO NDITIO NS
TYP
UNIT
Integration Bandwidth 12kHz - 20MHz 530.5330
DOC# 008-0345-1 Rev. A
Page 4 of 7
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
Advanced PLL HCMOS VCXO
Model 356C
Mechanical Specifications
Package Drawing
Marking Information
1.
2.
3.
4.
** – Manufacturing Site Code.
YYWW – Date Code; YY = year, WW = week.
O – Output Type; C = HCMOS.
ST – Frequency Stability/Temperature Code.
[Refer to Ordering Information]
5. V – Voltage Code; 3 = 3.3V, 2 = 2.5V.
6. xxxx – Frequency Code.
3-digits, frequencies below 100MHz
4-digits, frequencies 100MHz or greater
[See document 016-1454-0, Frequency Code Tables.]
CTS**YYWW
356OSTV
● xxxx
Recommended Pad Layout
Notes
1. JEDEC termination code (e4). Barrier-plating is
nickel [Ni] with gold [Au] flash plate.
2. Reflow conditions per JEDEC J-STD-020; +260°C
maximum, 20 seconds.
3. MSL = 1.
Pin Assignments
Pin
1
2
3
4
5
6
Symbol
V
C
EOH
GND
Output
N.C.
V
CC
Function
Voltage Control
Enable [tri-state]
Circuit & Package Ground
RF Output
No Connect
Supply Voltage
Table I - Date Code
MO NTH
2001
2002
2003
2004
YEAR
2005 2009
2006 2010
2007 2011
2008 2012
2013
2014
2015
2016
2017
2018
2019
2020
JAN
A
N
a
n
FEB
B
P
b
p
MAR
C
Q
c
q
AP R
D
R
d
r
MAY
E
S
e
s
JUN
F
T
f
t
JUL
G
U
g
u
AUG
H
V
h
v
SEP
J
W
j
w
O CT
K
X
k
x
NO V
L
Y
l
y
DEC
M
Z
m
z
DOC# 008-0345-1 Rev. A
Page 5 of 7
©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test
equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.
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