Programmable Quick Turn Clock

Programmable Quick Turn Clock T M
FEATURES
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PIN CONFIGURATION
Advanced programmable PLL design
Very low Jitter (30 to 70ps Pk-Pk typical)
Output frequency up to 200MHz CMOS
Input frequency:
o Fundamental crystal – 10MHz to 30MHz
o Reference clock – 1MHz to 200MHz
Accepts <1.0V reference signal input voltage
Two pre-programmed configurations selectable using
FSEL
Single 2.5V or 3.3V ± 10% power supply
Operating temperature range from -40C to 85C
Available in 8-Pin SOP GREEN/RoHS compliant
package
XIN/FIN
1
8
XOUT
VDD
2
7
FSEL
GND
3
6
DNC
CLK0
4
5
CLK1
DESCRIPTION
The PL611-12 is a low-cost general purpose frequency synthesizer and a member of PhaseLink’s Factory
Programmable ‘Quick Turn Clock (QTC)’ family. PhaseLink’s PL611 product family offers the versatility of using a
single crystal or reference clock input and producing up to three different system clocks. They can generate any
output frequency up to 200 MHz from a 10MHz to 30MHz fundamental crystal input between, or a Reference clock
input of up to 200 MHz. Cascading of the ICs to produce additional clock frequencies is also supported.
BLOCK DIAGRAM
XIN/FIN
Xtal
OSC
XOUT
Fref
R-counter
(8-bit)
Phase
Detector
Charge
Pump
Loop
Filter
M-counter
(10-bit)
Fvco= Fref * (2 * M / R)
P-counter
(5-bit)
FSEL
PDB
Programming
Logic
OE
VCO
Fout= Fvco / (2 * P)
Selectable
/1,/2,/4,/8
CLK1
CLK0
Selectable
/1,/2
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com
Rev 08/13/09 Page 1
Programmable Quick Turn Clock T M
KEY PROGRAMMING PARAMETERS
CLK0
Output Frequency
F OUT = F IN * M / (R * P)
where M=10 bit
R= 8 bit
P= 5 bit
1. CLK[0:2]= F OUT /[1,2,4,8]
2. CLK[0:2]= F IN or F IN /2
Output Drive Strength
Crystal Load
Std: 10mA (default)
± 200ppm
tuning.
High: 24mA
Programmable
Input/Output
Charge-Pump
Current
FSEL: Choose from
two pre-programmed
configurations
4 levels of
charge-pump
current settings
PIN DESCRIPTION
Name
Pin #
Type
Description
XIN
1
I
Crystal input pin
VDD
2
P
VDD connection (2.25~3.63V)
GND
3
P
GND connection
CLK0
4
O
Clock or REF output
CLK1
5
O
Clock output
DNC
6
-
Do not connect
FSEL
7
B
Frequency select input pin. Used to select between two preprogrammed configurations. This pin has an internal 60KΩ pull up
resistor.
XOUT
8
O
Crystal output pin
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com
Rev 08/13/09 Page 2
Programmable Quick Turn Clock T M
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
SYMBOL
MIN.
MAX.
UNITS
V DD
-0.5
4.6
V
Input Voltage Range
VI
-0.5
V DD +0.5
V
Output Voltage Range
VO
-0.5
V DD +0.5
V
260
C
-65
150
C
0
70
C
Supply Voltage Range
Soldering Temperature
Storage Temperature
TS
Ambient Operating Temperature*
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the device
and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other conditions above
the operational limits noted in this specification is not implied. *Operating temperature is guaranteed by design. Parts are tested to commercial grade only.
AC SPECIFICATIONS
PARAMETERS
Crystal (XIN) Frequency
Input (FIN) Frequency
Input (FIN) Signal Amplitude
Output Frequency
Settling Time
Output Rise Time
Output Fall Time
CONDITIONS
Fundamental Crystal
MIN.
TYP.
10
MAX.
UNITS
30
MHz
3.3V
200
2.5V
166
Internally AC coupled
0.9
V DD
3.3V
10
200
2.5V
At power-up (after V DD increases over
2.25V)
15pF Load, 10/90%V DD , Standard drive
10
166
MHz
Vpp
MHz
5
ms
2.5
3.5
ns
15pF Load, 10/90%V DD , High drive
1.0
1.5
ns
15pF Load, 90/10%V DD , Standard drive
2.5
3.5
ns
15pF Load, 90/10%V DD , High drive
1.0
1.5
ns
50
55
%
500
ps
Duty Cycle
At V DD /2
Max. output skew between
same frequency clocks
Equal loading (15 pF). Equal frequency &
drive strength
Period Jitter, peak-to-peak*
(10,000 samples measured)
With capacitive decoupling between V DD
and GND. Operating only one output.
45
70
ps
* Note: Jitter performance depends on the programming parameters.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com
Rev 08/13/09 Page 3
Programmable Quick Turn Clock T M
DC SPECIFICATIONS
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
10MHz, 15pF load (PDB=1)
15
mA
PDB=0
5
A
3.63
V
0.4
V
Supply Current, Dynamic,
with Loaded Outputs
I DD
Operating Voltage
V DD
Output Low Voltage
V OL
I OL = +4mA, Standard drive
Output High Voltage
V OH
I OH = -4mA, Standard drive
Output Current, Std drive
I OSD
V OL = 0.4V, V OH = 2.4V
10.7
mA
Output Current, High drive
I OHD
V OL = 0.4V, V OH = 2.4V
24
mA
Short-Circuit Current
2.25
V DD -0.4
IS
V
±50
mA
CRYSTAL SPECIFICATIONS
PARAMETERS
Fundamental Crystal Resonator Frequency
Crystal Loading Rating
(The IC can be programmed for any value in this range.)
Maximum Sustainable Drive Level
SYMBOL
MIN.
F XIN
C L (xtal)
Operating Drive Level
Crystal Shunt Capacitance
Effective Series Resistance, Fundamental, 10-30MHz
TYP.
MAX.
UNITS
10
30
MHz
5
20
pF
500
W
W
100
C0
6
pF
ESR
30
Ω
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com
Rev 08/13/09 Page 4
Programmable Quick Turn Clock T M
PACKAGE DRAWING (GREEN COMPLIANT PACKAGE)
SOP-8L
Symbol
A
A1
A2
B
C
D
E
H
L
e
Dimension in MM
Min.
Max.
1.35
1.75
0.10
0.25
1.25
1.50
0.33
0.53
0.19
0.27
4.80
5.00
3.80
4.00
5.80
6.20
0.40
0.89
1.27 BSC
E
H
D
A2 A
A1
C
e
L
b
ORDERING INFORMATION (GREEN COMPLIANT PACKAGE)
For part ordering, please contact our Sales Department:
47745 Fremont Blvd., Fremont, CA 94538, USA
Tel: (510) 492-0990 Fax: (510) 492-0991
PART NUMBER
The order number for this device is a combination of the following:
Part number, Package type and Operating temperature range
* PhaseLink will assign a unique 3-digit ID code for each approved programmed part number.
Part/Order Number
PL611-12-XXXSC
PL611-12-XXXSC -R
†
Marking†
C6XXX
SC
LLLLL
Package Option
8-Pin SOP (Tube)
8-Pin SOP (Tape and Reel)
Note: ‘XXX’ designates marking identifier that, at times, could be independent of the part number.
Please consult your PhaseLink sales representative for marking information.
PhaseLink Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information
furnished by Phaselink is believed to be accurate and reliable. However, PhaseLink makes no guarantee or warranty concerning the accuracy of said
information and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY: PhaseLink’s products are not authorized for use as critical components in life support devices or systems without the
express written approval of the President of PhaseLink Corporation.
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com
Rev 08/13/09 Page 5