PL502-02SC-R Datasheet PL502-02SC, PL502-02SC-R | P1-P3

PL502-02

Low Phase Noise VCXO (24MHz to 50MHz)

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

FEATURES

 Low phase noise VCXO output for the 24MHz to

50MHz range (-130 dBc at 10kHz offset)

 LVCMOS output

 12 to 25MHz crystal input

 Integrated variable capacitors

 Available with High Drive (30mA) or Standard

Drive (10mA) output

 Wide pull range (± 250 ppm typical)

 Low period jitter: 3ps RMS

 3.3V operation

 Available in 8-Pin SOP.

DESCRIPTION

The PL502-02 is a low cost, high performance, low

phase noise VCXO, providing less than -130dBc at

10kHz offset in the 24MHz to 50MHz operating

range. The very low jitter (3 ps RMS period jitter)

makes this chip ideal for applications requiring volt-

age controlled frequency sources. Input crystal can

range from 12MHz to 25MHz (fundamental resonant

mode).

PIN CONFIGURATION

OUTPUT RANGE

MULTIPLIER

FREQUENCY

RANGE

OUTPUT

BUFFER

x2

24 to 50MHz

LVCMOS

BLOCK DIAGRAM

Reference

Divider

Phase

Comparator

Charge

Pump

Loop

Filter

VCO

Divider

XTAL

OSC

OE

XIN

XOUT

CLK

VCON

VARICAP

PL502-02

1

2

3

4 5

6

7

8

XOUT

N/C

VCON

GND

XIN

VDD

CLK

N/C

SOP-8L

PL502-02

Low Phase Noise VCXO (24MHz to 50MHz)

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • f ax +1(408) 474-1000 • www.micrel.com R ev 5 /16/11 Page 2

PIN DESCRIPTIONS

Name

Number

Type

Description

XOUT

1

I

Crystal output. See Crystal Specifications on page 4.

N/C

2,7

-

Not connected.

VCON

3

I

Voltage Control input.

GND

4

P

Ground.

CLK

5

O

Output clock.

VDD

6

P

+3.3V power supply.

XIN

8

I

Crystal input. See Crystal Specifications on page 4.

ELECTRICAL SPECIFICATIONS

1. Absolute Maximum Ratings

PARAMETERS

SYMBOL

MIN.

MAX.

UNITS

Supply Voltage

V

DD

4.6

V

Input Voltage, dc

V

I

-0.5

V

DD

+0.5

V

Output Voltage, dc

V

O

-0.5

V

DD

+0.5

V

Storage Temperature

T

S

-65

150

C

Ambient Operating Temperature*

T

A

-40

85

C

Junction Temperature

T

J

125

C

Lead Temperature (soldering, 10s)

260

C

ESD Protection, Human Body Model

2

kV

Exposure of the device unde r 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 con-

ditions above the operational limits noted in this specification is not implied. Note: Operating Temperature is guaranteed by design for all parts (CO M-

MERCIAL and INDUSTR IAL), but tested for COMMERC IAL grade only.

2. AC Electrical Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Input Crystal Frequency

12

25

MHz

Output Clock Rise/Fall Time

(Standard Drive)

t

r

/t

f

0.3V ~ 3.0V, 15 pF load

2.4

ns

Output Clock Rise/Fall Time

(High Drive)

t

r

/t

f

0.3V ~ 3.0V, 15 pF load

1.2

Output Clock Duty Cycle

Measured @ 50% V

DD

45

50

55

%

PL502-02

Low Phase Noise VCXO (24MHz to 50MHz)

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • t el +1(408) 944 -0800 • f ax +1(408) 474-1000 • www.micrel.com R ev 5 /16/11 Page 3

3. DC Specifications

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

Supply Current, Dynamic,

with Loaded Outputs

I

DD

F

XIN

= 25MHz

Output load 10pF

16

20

mA

Operating Voltage

V

DD

2.97

3.63

V

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

VCXO Control Voltage

VCON

0

3.3

V

4. Voltage Control Crystal Oscillator

PARAMETERS

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

VCXO Stabilization Time *

T

VCXO STB

From power valid

10

ms

VCXO Tuning Range

F

XIN

= 12 – 25MHz;

XTAL C

0

/C

1

< 250

0V  VCON  3.3V

500

ppm

CLK output pullability

VCON=1.65V, 1.65V

200

ppm

VCXO Tuning Characteristic

165

ppm/V

Pull range linearity

10

%

VCON pin input impedance

2000

kΩ

VCON modulation BW

0V  VCON  3.3V, -3dB

10

kHz

Note: Parameters denoted with an asterisk (*) represent no minal 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)

44MHz, with capacitive decoupling

between V

DD

and GND

3

ps