PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -08 00 • fax +1(408 ) 474-1000 • www.micrel.com Rev 02/14/1 Page 1
FEATURES
1:4 LVCMOS output fanout buffer for DC to150MHz
Low Additive Phase Jitter of 60fs RMS
8mA Output Drive Strength
Low power consumption for portable applications
Low input-output delay
Output-Output skew less than 250ps
2.5V to 3.3V, ±10% operation
Operating temperature range from -40°C to 85°C
Available in 8-Pin SOP GREEN/RoHS package
DESCRIPTION
The PL133-47 is an advanced fanout buffer design for
high performance, low-power, small form factor applica-
tions. The PL133-47 accepts a reference clock input from
DC to 150MHz and provides 4 outputs of the same fre-
quency.
The PL133-47 is offered in a SOP-8L package and it offers
the best phase noise, additive jitter performance, and low-
est power consumption of any comparable IC.
BLOCK DIAGRAM AND PACKAGE PINOUT
REF
CLK0
CLK1
CLK2
CLK3
VDD
VDD CLK3
CLK2
CLK1
CLK0
5
6
7
8
4
3
2
1
GND
REF
SOP-8L
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -08 00 • fax +1(408 ) 474-1000 • www.micrel.com Rev 1/27/11 Page 2
PIN DESCRIPTIONS
Name
SOP-8L
Type
Description
REF
3
I
Input reference frequency.
CLK0
5
O
Buffered clock output
CLK1
6
O
Buffered clock output
CLK2
7
O
Buffered clock output
CLK3
8
O
Buffered clock output
VDD
1, 2
P
VDD connection
GND
4
P
GND connection
LAYOUT RECOMMENDATIONS
The following guidelines are to assist you with a performance optimized PCB d esign:
Signal Integrity and Termination
Considerations
- Keep traces short!
- Trace = Inductor. With a capacitive load this equals
ringing!
- Long trace = Transmission Line. Without proper termi-
nation this will cause reflections ( looks like ringing ).
- Design long traces (> 1 inch) as “striplines” or
“microstrips” with defined impedance.
- Match trace at one side to avoid reflections bouncing
back and forth.
Decoupling and Power Supply
Considerations
- Place decoupling capacitors as close as possible
to the VDD pin(s) to limit noise from the power
supply
- Addition of a ferrite bead in series with VDD can
help prevent noise from other board sources
- Value of decoupling capacitor is frequency de-
pendant. Typical values to use are 0.1F for de-
signs using frequencies < 50MHz and 0.01F for
designs using frequencies > 50MHz.
Typical CMOS termination
Place Series Resistor as close as possible to CMOS output
CMOS Output Buffer
( Typical buffer impedance 20 ohm) To CMOS Input
Connect a 33 ohm series resistor at each of the output clocks to
enhance the stability of the output signal
50 ohm line
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.mi crel.com Rev 1/27/11 Page 3
ABSOLUTE MAXIMUM CONDITIONS
Supply Voltage to Ground Potential ...... –0.5V to 4.6V
DC Input Voltage ............................ VSS – 0.5V to 4.6V
Storage Temperature ..........................–65°C to 150°C
Junction Temperature………………………….. 150°C
Static Discharge Voltage
(per MIL-STD-883, Method 3015)…………..> 2000V
OPERATING CONDITIONS
Parameter
Description
Unit
VDD
Supply Voltage
V
TA
Commercial Operating Temperature (ambient temperature)
C
Industrial Operating Temperature (ambient temperature)
C
CL
Load Capacitance, below 100 MHz
pF
Load Capacitance between 100 MHz and 134 MHz
pF
Load Capacitance, above 134 MHz
pF
CIN
Input Capacitance
pF
REF, CLK[1:6]
Operating Frequency, Input=Output
MHz
tPU
Power-up time for all VDDs to reach minimum specified voltage
(power ramps must be monotonic)
ms
ELECTRICAL CHARACTERISTICS (Commercial and Industrial Temperature Devices)
Parameter
Description
Test Conditions
Max.
Unit
VIL
Input LOW Voltage [1]
0.8
V
VIH
Input HIGH Voltage [1]
–
V
IIL
Input LOW Current
VIN = 0V
50
µA
IIH
Input HIGH Current
VIN = VDD
100
µA
VOL
Output LOW Voltage [2]
IOL = 8 mA
0.4
V
VOH
Output HIGH Voltage [2]
IOH = –8 mA
–
V
IDD
Supply Current
66.67MHz with unloaded outputs
32
mA
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.mi crel.com Rev 1/27/11 Page 4
SWITCHING CHARACTERISTICS (Commercial and Industrial Temperature Devices) [3 ]
Parameter
Description
Test Conditions
Min.
Typ.
Max.
Unit
Duty Cycle [2] = t2 ÷ t1
Measured at 1.4V, Input is 50%
40
50
60
%
t3
Rise Time [2]
Measured between 0.8V and 2.0V
–
–
1.5
ns
t4
Fall Time [2]
Measured between 0.8V and 2.0V
–
–
1.5
ns
t5
Output to Output Skew [2]
All outputs equally loaded
–
–
250
ps
t6
Propagation Delay, REF Rising
Edge to CLKX Rising Edge [2]
Measured at VDD/2
1
5
9.2
ns
Notes:
1. REF input has a threshold voltage of VDD/2
2. Parameter is guaranteed by design and characterization. Not 100% tested in produ ction.
3. All parameters are specified with loaded outputs .
NOISE CHARACTERISTICS (Commercial and Industrial Temperature Devices)
Parameter
Description
Test Conditions
Min.
Typ.
Max.
Unit
Additive Phase Jitter
V DD=3.3V, Frequency=100MHz
Offset=12KHz ~ 20MHz
60
fs
PL133-47 Additive Phase Jitter:
VDD=3.3V, CLK=100MHz, Integration Range 12KHz to 20MHz: 0.059ps typical.
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
10 100 1000 10000 100000 1000000 10000000 100000000
Offset Frequency (Hz)
Phase Noise (dBc/Hz)
REF Input PL133-47 Output
When a buffer is used to pass a signal then the buffer will add a little bit of its own noise. The phase noise on the output of the
buffer will be a little bit more than the phase noise in the input signal. To quantify the noise addition in the buffer we compare the
Phase Jitter numbers from the input and the output. The difference is called "Additive Phase Jitter". The formula for the Additive
Phase Jitter is as follows:
Additive Phase Jitter = (Output Phase Jitter) - (Input Phase Jitter)22
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.mi crel.com Rev 1/27/11 Page 5
SWITCHING WAVEFORMS
TEST CIRCUIT
1.4V
1.4V
t2
t1
VDD/2
INPUT
t6
OUTPUT
VDD/2
1.4V
OUTPUT
t5
OUTPUT
1.4V
Duty Cycle Timing
All Outputs Rise/Fall Time
Output-Output Skew
Input-Output Propagation Delay
t3
t4
OUTPUT
0.8V
2.0V
0V
3.3V
V
0.8V
2.0V
VDD
VDD
GND
GND
OUTPUTS
CL O AD
CLK
0.1 F
0.1 F
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.mi crel.com Rev 1/27/11 Page 6
PACKAGE DRAWING (GREEN PACKAGE COMPLIANT)
SOP 8L
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
C
L
A2
EH
D
A1
eb
A
PL133-47
Low-Power 2.25V to 3.63V DC to 150MHz 1:4 Fanout Buffer IC
Mic rel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.mi crel.com Rev 1/27/11 Page 7
ORDERING INFORMATION
Mic rel 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 beli eved to be accurate and reliable. Howev er, Micrel makes no gua rant ee o r warranty concerning the accuracy of s aid info rmation and shall not be
res ponsible for any loss or damage of whatever nature resulting from the use of, or rel ianc e up on t his product.
LIF E SUPPO RT POLICY: Micrel’s pr oduc ts are not authorized for use as critical components i n life support devic es or systems withou t the express
wri tten approval of the President of Mic rel 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
PL133-47 X X - X
Part Number
Package Type
S=SOP
None=Tubes
R=Tape & Reel
Temperature Range
C=Commercial (0°C to 70°C)
I=Industrial (-40°C to 85°C)
Part/Order Number
Marking
Package Option
Green (Lead-Free) Package
PL133-47SC
P133-47
SC
LLLLL
8-Pin SOP Tube
PL133-47SC-R
8-Pin SOP (Tape and Reel)
PL133-47SI
P133-47
SI
LLLLL
8-Pin SOP Tube
PL133-47SI-R
8-Pin SOP (Tape and Reel)
*Note: LLLLL de sign ates lot number