PL102-10
Low Skew Output Buffer
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com R ev 2/5/09 Page 1
FEATURES
Frequency Range:
− 15 to 170MHz @ 3.3V
− 15 to 145MHz @ 2.5V
Internal Phase Locked Loop Allows Spread
Spectrum Modulation on Reference Clock to
Pass to Outputs.
Zero Input to Output Delay
Less Than 700ps Device to Device Skew
Less Than 200ps Skew Between Outputs
Less Than 100ps Cycle to Cycle Jitter
2.5V or 3.3V Power Supply
Available in 8-Pin SOP or 6-pin SOT GREEN/ RoHS
Compliant Packages
PIN CONFIGURATION
DESCRIPTION
The PL102-10 is a high performance, low skew, low jitter zero delay buffer designed to distribute high speed
clocks and is available in 8-pin SOP or 6-pin SOT23 package. It has two outputs that are synchronized with the
input. The synchronization is established via CLKOUT feed back to the input of the PLL. Since the skew between
the input and output is less than 350 ps, the device acts as a zero delay buffer.
BLOCK DIAGRAM
PLL
REFIN CLKOUT
CLK1
CLK2
1
2
3
4 5
6
7
8REFIN
CLK1
CLK2
CLKOUT
DNC
VDD
DNCGND
SOP-8L
1
2
3 4
5
6
CLK1
GND
REFIN
CLK2
CLKOUT
VDD
SOT23-6L
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 2
PIN DESCRIPTIONS
Pin
Name
Pin Number
Type
Description
SOP-8L
SOT23-6L
REFIN
1
3
I
Input reference frequency. Spread spectrum modulation on this
signal will be passed to the output (up to 100kHz SST modulation).
GND
2
2
P
Ground Connection.
CLK1
3
1
O
Buffered clock output.
CLK2*
4
6
O
Buffered clock output.
VDD
5
5
P
2.5V or 3.3V Power Supply connection.
DNC
6, 7
-
-
Do Not Connect
CLKOUT
8
4
O
Buffered clock output. Internal feed back on this pin.
*Note: If CLK2 is pulled high during startup the device will enter test mode.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
SYMBOL
MIN.
MAX.
UNITS
VDD
4.6
V
VI
-0.5
VDD+0.5
V
VO
-0.5
VDD+0.5
V
TS
-65
150
C
TA
-40
85
C
TJ
125
C
260
C
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 dev ice at these or any other co n-
ditions above the operational limits noted in this specification is no t i mplied. * Operating temperature is guaranteed by design. Parts are tested to
commercial grade only.
2. Electrical Characteristics
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Supply Voltage
VDD
2.25
3.63
V
Input Low Voltage
VIL
0.8
V
Input High Voltage
VIH
2.0
V
Output Low Voltage
VOL
IOL = 24mA
0.4
V
Output High Voltage
VOH
IOH = 24mA
2.4
V
Supply Current
IDD
Unloaded outputs at 100MHz,
VDD=3.3V.
22
30
mA
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 3
3. Switching Characteristics
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Input/Output Frequency
t1
2.5V/3.3V
15
145/170
MHz
Duty Cycle
DC
Measured at VDD/2, CL=15pF,
Fou t = 100MHz
45
50
55
%
Rise Time
Tr
Measured between 10% and
90%VDD, CL=15pF
1.2
1.5
ns
Fall Time
Tf
Measured between 90% and
10%, CL=15pF
1.2
1.5
ns
Output to Output Skew
Tske w
All outputs equally loaded,
CL=15pF
200
ps
Delay, REF Rising Edge
to CLKOUT Rising Edge
Tdela y
Measured at VDD/2
0
350
ps
Device to Device Skew
Tdsk-dsk
Measured at VDD/2 on the
CLKOUT pins of devices
0
700
ps
Cycle to Cycle Jitter
Tcyc-c yc
Measured at 100MHz
60
ps
PLL Lock Time
Tlo c k
Stable power supply, valid
clock presented on REF pin
1.0
ms
Jitter; Absolute Jitter
Tja bs
Measured 10,000 cycles,
low jitter input signal
20
50
ps
Jitter; 1-sigma
Tj1-s
Measured 10,000 cycles,
low jitter input signal
9
15
ps
SWITCHING WAVEFORMS
Duty Cycle Timing
t1
t2
VDD/2VDD/2 VDD/2
Output - Output Skew
VDD/2
VDD/2
TSKEW
Output
Output
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 4
SWITCHING WAVE FORMS
All Outputs Rise/Fall Time
0.8V
2.0V
Output trtf
2.0V
0.8V
3.3V
0V
Input to Output Propagation Delay
Input
Output
VDD/2
Tdelay
VDD/2
Device to Device Skew
Device1 CLKOUT
Device2 CLKOUT
VDD/2
Tdsk - dsk
VDD/2
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 5
Output-Output Skew
REF
CLKOUT
The skew between CLKOUT and the CLK(1-2) outputs is not dynamically adjusted by the
PLL. Since CLKOUT is one of the inputs to the PLL, zero phase difference is maintained
from REF to CLKOUT. If all outputs are equally loaded, zero phase difference will be
maintained from REF to all outputs.
If applications requiring zero output-output skew, all the outputs must be equally loaded.
If the CLK(1-2) outputs are less loaded than CLKOUT, CLK(1-2) outputs will lead it; if the
CLK(1-2) is more loaded than CLKOUT, CLK(1-2) will lag the CLKOUT.
Since the CLKOUT and the CLK(1-2) outputs are identical, they all start at the same time,
but difference loads cause them to have different rise times and different times crossing
the measurement thresholds.
CLK(1-2)
Zero Delay
REF
CLKOUT
CLK(1-2)
Advanced
REF
CLKOUT
CLK(1-2)
Delayed
REF input and all outputs are equally loaded REF input and CLK(1-2) outputs are equally loaded,
with CLK(1-2) less loaded than CLKOUT.
REF input and CLK(1-2) outputs loaded equally,
withCLK(1-2) more loaded then CLKOUT.
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 6
PACKAGE INFORMATION (GREEN PACKAGE COMPLIANT)
SOP-8L
SOT23-6L
Symbol
Dimension in MM
Min.
Max.
A
1.35
1.75
A1
0.10
0.25
A2
1.25
1.50
B
0.33
0.53
C
0.19
0.27
D
4.80
5.00
E
3.80
4.00
H
5.80
6.20
L
0.40
0.89
e
1.27 BSC
Symbol
Dimension in MM
Min.
Max.
A
1.05
1.35
A1
0.05
0.15
A2
1.00
1.20
B
0.30
0.50
C
0.08
0.20
D
2.80
3.00
E
1.50
1.70
H
2.60
3.0
L
0.35
0.55
e
0.95 BSC
C
L
A2
EH
D
A1
eb
A
C
L
A2
EH
D
A1
eb
A
PL102-10
Low Skew Output Buffer
Micrel Inc. • 2 180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 2/5/09 Page 7
ORDERING INFORMATION (GREEN PACKAGE COMPLIANT)
Micrel Inc., reserves the right to make changes in its products or specifications, or both at any time without notice. The information furnished by Micrel
is believed to be accurate and reliable. However, Micrel makes no guarantee or warranty concerning the accuracy of said info rmation and shall not be
responsible for any loss or damage of what ever nature resulting from the use of, or reliance upo n this product.
LIFE SUPPORT POLICY: Micrel’s products are not authorized for use as critical components in life support de vices or systems without the express
written approval of the President of Micre l Inc.
For part ordering, please contact our Sales Department:
2180 Fortune Drive, San Jose, CA 95131, USA
Tel: (408) 944-0800 Fax: (408) 474-1000
PART NUMBER
The order number for this device is a combination of the following:
Part number, Package type and Operating temperature range
PL102-10 X X - X
Part / Order Number
Marking*
Package Option
PL102-10SC
P102-10
SC
LLL
8-Pin SOP (Tube)
PL102-10SC-R
P102-10
SC
LLL
8-Pin SOP (Tape and Reel)
PL102-10SI
P102-10
SI
LLL
8-Pin SOP (Tube)
PL102-10SI-R
P102-10
SI
LLL
8-Pin SOP (Tape and Reel)
PL102-10TC-R
C10A0
LLL
6-Pin SOT (Tape and Reel)
PL102-10TI-R
C10A0
LLLI
6-Pin SOT (Tape and Reel)
*Note: LLL designates lot number
PART NUMBER
TEMPERATURE
C=COMMERCIAL (0°C to 70°C)
I=INDUSTRIAL (-40°C to 85°C)
PACKAGE TYPE
S= SOP-8L
T= SOT23-6L
NONE= TUBE
R=TAPE AND REEL