PL502-03
Low Phase Noise VCXO (48MHz to 100MHz)
FEATURES
VCXO output for the 48MHz to 100MHz range
Low phase noise (-130 dBc @ 10kHz offset at
48MHz)
LVCMOS output
12 to 25MHz crystal input
Integrated variable capacitors
Selectable High Drive (30mA) or Standard Drive
(10mA) output
Wide pull range (± 250 ppm typ)
Low period jitter: 3.5ps RMS
3.3V operation
Available in 8-Pin SOP
XOUT
1
N/C
2
VCON
3
GND
4
PL502-03
PIN CONFIGURATION
8
XIN
7
OE^
6
VDD
5
CLK
SOP-8L
Note: ^ deno tes internal pull up
DESCRIPTION
The PL502-03 is a low cost, high performance and
low phase noise VCXO for the 48 to 100MHz range,
providing less than -130dBc at 10kHz offset at
48MHz. The very low jitter (3.5ps RMS period jitter)
makes this chip ideal for applications requiring vol tage controlled frequency sources. Input crystal can
range from 12 to 25MHz (fundamental resonant
mode).
OUTPUT RANGE
MULTIPLIER
FREQUENCY
RANGE
OUTPUT
BUFFER
X4
48 - 100MHz
LVCMOS
BLOCK DIAGRAM
VCO
Divider
Reference
Divider
XIN
XOUT
XTAL
OSC
Phase
Comparator
Charge
Pump
Loop
Filter
VCO
CLK
OE
VARICAP
VCON
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 1
PL502-03
Low Phase Noise VCXO (48MHz to 100MHz)
PIN DESCRIPTIONS
Name
Number
Type
Description
XOUT
1
I
Crystal output. See Crystal Specifications on page 4.
N/C
2
-
Not connected.
VCON
3
I
Voltage Control input.
GND
4
P
Ground.
CLK
5
O
Output clock.
VDD
6
P
+3.3V power supply.
OE
7
I
Output enable input. Disables (tri -state) output when low. Internal
pull-up enables output by default if pin is not connected to low.
XIN
8
I
Crystal input. See Crystal Specifications on page 4.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
SYMBOL
MIN.
V DD
MAX.
UNITS
4.6
V
Input Voltage, dc
VI
-0.5
V DD+0.5
V
Output Voltage, dc
VO
-0.5
V DD+0.5
V
Storage Temperature
TS
-65
150
C
Ambient Operating Temperature*
TA
-40
85
C
Junction Temperature
TJ
125
C
Lead Temperature (soldering, 10s)
260
C
ESD Protection, Human Body Model
2
kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods m ay 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
conditions above the operational limits noted in this specification is n ot implied. Note: Operating Temperature is guaranteed by design for all parts
(COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. AC Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
Input Crystal Frequency
MIN.
TYP.
12
Output Clock Rise/Fall Time
(Standard Drive)
0.3V ~ 3.0V, 15 pF load
Output Clock Rise/Fall Time
(High Drive)
0.3V ~ 3.0V, 15 pF load
Output Clock Duty Cycle
Measured @ 50% V DD
MAX.
UNITS
25
MHz
2.4
ns
1.2
45
50
55
%
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 2
PL502-03
Low Phase Noise VCXO (48MHz to 100MHz)
3. DC Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
MIN.
F XIN = 25MHz
Output load 10pF
TYP.
MAX.
UNITS
16
20
mA
3.63
V
Supply Current, Dynamic,
with Loaded Outputs
I DD
Operating Voltage
V DD
Output Drive Current
(High Drive)
I OH
V OH= V DD -0.4V, V DD =3.3V
30
mA
I OL
V OL = 0.4V, V DD = 3.3V
30
mA
Output Drive Current
(Standard Drive)
I OH
V OH= V DD -0.4V, V DD =3.3V
10
mA
I OL
V OL = 0.4V, V DD = 3.3V
10
mA
2.97
50
Short Circuit Current
VCXO Control Voltage
VCON
0
mA
3.3
V
MAX.
UNITS
10
ms
4. Voltage Control Crystal Oscillator
PARAMETERS
VCXO Stabilization Time *
SYMBOL
T VCXOSTB
CONDITIONS
MIN.
TYP.
From power valid
VCXO Tuning Range
F XIN = 12 – 25MHz;
XTAL C0 /C1 < 250
0V VCON 3.3V
CLK output pullability
VCON=1.65V, 1.65V
500
200
VCXO Tuning Characteristic
ppm
150
Pull range linearity
ppm/V
10
VCON pin input impedance
VCON modulation BW
ppm
%
2000
kΩ
10
kHz
0V VCON 3.3V, -3dB
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
5. Jitter and Phase Noise specification
PARAMETERS
CONDITIONS
MIN.
TYP.
MAX.
UNITS
RMS Period Jitter
(1 sigma – 1000 samples)
with capacitive decoupling
between VDD and GND.
3.5
ps
Phase Noise relative to carrier
48MHz @100Hz offset
-100
dBc/Hz
Phase Noise relative to carrier
48MHz @1kHz offset
-123
dBc/Hz
Phase Noise relative to carrier
48MHz @10kHz offset
-130
dBc/Hz
Phase Noise relative to carrier
48MHz @100kHz offset
-125
dBc/Hz
Phase Noise relative to carrier
48MHz @1MHz offset
-125
dBc/Hz
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 3
PL502-03
Low Phase Noise VCXO (48MHz to 100MHz)
6. Crystal Specifications
PARAMETERS
SYMBOL
MIN.
F XIN
12
Crystal Resonator Frequency
Crystal Loading Capacitance Rating
TYP.
CL (x ta l)
UNITS
25
MHz
9.5
pF
C0/C1
ESR
MAX.
RS
250
-
30
Ω
Note: Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the crystal will be at no minal frequency at this load. If the crystal requires more load to be at nominal frequency, the additional load must be added externally.
This however may reduce the pull range.
PACKAGE INFORMATION (GREEN PACKAGE COM PLIANT)
8 PIN SOP (in mm)
Symbol
A
A1
B
C
D
E
H
L
e
Min.
Max.
1.47
1.73
0.10
0.25
0.33
0.51
0.19
0.25
4.80
4.95
3.80
4.00
5.80
6.20
0.38
1.27
1.27 BSC
E
H
D
A
A1
C
e
B
L
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 4
PL502-03
Low Phase Noise VCXO (48MHz to 100MHz)
ORDERING INFORM ATION (GREEN PACKAGE COM PLIANT)
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
PL502-03 H X X X
Part Number
Shipping Option
Blank=Tube
R=Tape & Reel
Optional High
Drive
Package Type
S=SOP-8L
Part/Order Number
PL502-03SC
PL502-03SC-R
PL502-03HSC
PL502-03HSC-R
Temperature Range
C=Commercial (0°C to 70°C)
I=Industrial (-40°C to 85°C)
Marking
P502-03
SC
LLLLL
P502-03H
SC
LLLLL
Package Option
SOP - Tube
SOP - Tape and Reel
SOP - Tube
SOP - Tape and Reel
*Note: “LLL” or “LLLLL” are designates lot number
Micrel Inc., reserves the right to make changes in its products or specifications, or both at any time without notice. The in formation furnished by Micrel
is believed to be accurate and reliable. However, Micrel 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: Micrel’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 Micrel Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 5/16/11 Page 5
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