Model 656C
Advanced PLL HCMOS Clock
Features
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
Part Dimensions:
7.0 × 5.0 × 2.0mm • 178.462mg
Applications
Broadcast Video Systems
Storage Area Networking
Broadband Access
PCI Express
Networking Equipment
Ethernet/GbE/SyncE
Fiber Channel
Test and Measurement
Standard Frequencies
‐ 77.76MHz
‐ 100.00MHz
‐ 106.25MHz
‐ 125.00MHz
* Check with factory for availability.
Description
CTS Model 656C is a low cost, high performance PLL clock oscillator supporting HCMOS output. Employing the
latest IC technology, M656C has excellent stability and low phase jitter performance.
Ordering Information
Model
656
Output
Type
C
Frequency Code
[MHz]
X XX
or XXX
X
Frequency
Stability
3
Temperature
Range
I
Supply
Voltage
3
Packaging
T
Code
Frequency
1
Product Frequency Code
Code Temp. Range
‐20°C to +70°C
C
‐40°C to +85°C
I
Packing
Code
1k pcs./reel
T
Code
C
Output
HCMOS
Code
6
5
3
Stability
±20ppm
±25ppm
±50ppm
2
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] Consult factory for availability of 6I Stability/Temperature combination.
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
DOC# 008‐0342‐1 Rev. B
Page 1 of 7
©2015 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.
Model 656C
Advanced PLL HCMOS Clock
Electrical Specifications
Operating Conditions
P
ARAMETER
Maximum Supp
ly Voltage
Sup
ply Voltage
Sup
ply Current
O
peratin g Temperature
Sto
rage Temperature
SYMBO L
V
CC
V
CC
I
CC
T
A
T
STG
CO NDITIO NS
‐
±5%
Maximum Load
‐
‐
MIN
‐0.5
2.375
3.135
‐
‐20
‐40
‐55
TYP
‐
2.5
3.3
20
+25
‐
MAX
5.0
2.625
3.465
‐
+70
+85
+125
UNIT
V
V
mA
°C
°C
Frequency Stability
P
ARAMETER
Frequenc
y Ran ge
Frequenc
y Stability
[Note 1]
SYMBO L
f
O
Δf/f
O
Δf/f
25
CO NDITIO NS
‐
‐
First Year @ +25°C, nominal V
CC
MIN
TYP
10 ‐ 250
20, 25 or 50
MAX
UNIT
MHz
±ppm
Aging
‐3
‐
3
ppm
1.] Inc lusive of initial tolerance at time of shipment, c hanges in supply voltage, load, temperature and 1st year aging.
Output Parameters
P
ARAMETER
O
utput Ty pe
O
utput Load
O
utput Voltage Levels
O
utput Duty
Cy
c le
Rise and Fall Time
Start Up Time
Enable Fu
nc tion
[Standby
]
En
able Input Voltage
Disable Inp
ut Voltage
Disable Current
En
able Time
P
hase Jitter, RMS
P
eriod
Jitter, p
k‐p k
P
eriod
Jitter, RMS
V
IH
V
IL
I
IL
T
PLZ
tjrms
pjpk‐pk
pjrms
Pin 1 Logic '1', Output Enabled
Pin 1 Logic '0', Output Disabled
Pin 1 Logic '0', Output Disabled
Pin 1 Logic '1', Output Enabled
Bandwidth 12 kHz ‐ 20 MHz
‐
‐
0.7V
CC
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
600
3.0
30
‐
0.3V
CC
20
5
<1000
‐
‐
V
V
uA
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
HCMOS
‐
‐
‐
‐
5
3
15
‐
0.1V
CC
55
10
5
MAX
UNIT
‐
pF
V
%
ns
ms
DOC# 008‐0342‐1 Rev. B
Page 2 of 7
©2015 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.
Model 656C
Advanced PLL HCMOS Clock
Electrical Specifications
Enable Truth Table
Pin 1
Logic ‘1’
Open
Logic ‘0’
Pin 4
Output
Output
High Imp.
Test Circuit
HCMOS
Output Waveform
HCMOS
DOC# 008‐0342‐1 Rev. B
Page 3 of 7
©2015 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.
Model 656C
Advanced PLL HCMOS Clock
Electrical Specifications
Performance Data
Phase Noise [typical]
62.50MHz, HCMOS, V
CC
= 3.3V, T
A
= +25°C
100.00MHz, HCMOS, V
CC
= 3.3V, T
A
= +25°C
125.00MHz, HCMOS, V
CC
= 3.3V, T
A
= +25°C
250.00MHz, HCMOS, V
CC
= 3.3V, T
A
= +25°C
DOC# 008‐0342‐1 Rev. B
Page 4 of 7
©2015 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.
Model 656C
Advanced PLL HCMOS Clock
Electrical Specifications
Performance Data
Phase Noise Tabulated
Typical, HCMOS, V
CC
= 3.3V, T
A
= +25°C
P
ARAMETER
HCMO S @
6
2 .5 MHz
P
h ase Noise
Single Side Band
@ 10Hz
@ 100Hz
@ 1kHz
‐
@ 10kHz
@ 100kHz
@ 1MHz
@ 10MHz
@ 40MHz
P
h ase Jitter, RMS
tjrms
‐80.50
‐105.40
‐121.40
‐130.50
dBc/Hz
‐134.50
‐150.10
‐154.30
‐154.40
fs
P
hase Jitter, RMS
tjrms
‐
SYMBO L
CO NDITIO NS
TYP
UNIT
P
ARAMETER
HCMO S @
1
0 0 .0 0 MHz
P
hase No ise
Single Side Band
@ 10Hz
@ 100Hz
@ 1kHz
@ 10kHz
@ 100kHz
@ 1MHz
@ 10MHz
@ 40MHz
‐82.60
‐101.40
‐111.50
‐125.10
dBc/Hz
‐130.10
‐143.40
‐154.20
‐156.60
fs
SYMBO L
CO NDITIO NS
TYP
UNIT
Integration Bandwidth 12kHz ‐ 20MHz
632.41
Integration Bandwidth 12kHz ‐ 20MHz
579.53
P
ARAMETER
HCMO S @
1
2 5 .0 0 MHz
P
h ase Noise
SYMBO L
CO NDITIO NS
TYP
UNIT
P
ARAMETER
HCMO S @
2
5 0 .0 0 MHz
SYMBO L
CO NDITIO NS
TYP
UNIT
Single Side Band
@ 10Hz
@ 100Hz
@ 1kHz
‐
@ 10kHz
@ 100kHz
@ 1MHz
@ 10MHz
@ 40MHz
‐69.00
‐89.80
‐115.30
‐123.10
dBc/Hz
‐128.50
‐144.20
‐152.60
‐153.00
fs
P
hase No ise
Single Side Band
@ 10Hz
@ 100Hz
@ 1kHz
‐
@ 10kHz
@ 100kHz
@ 1MHz
@ 10MHz
@ 40MHz
‐86.00
‐95.40
‐110.40
‐119.10
dBc/Hz
‐120.70
‐137.70
‐149.30
‐153.30
fs
P
h ase Jitter, RMS
tjrms
Integration Bandwidth 12kHz ‐ 20MHz
543.39
P
hase Jitter, RMS
tjrms
Integration Bandwidth 12kHz ‐ 20MHz
560.64
DOC# 008‐0342‐1 Rev. B
Page 5 of 7
©2015 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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