5P50901NBGI - IDT, Integrated Device Technology Inc

DATASHEET

SPREAD SPECTRUM CLOCK SYNTHESIZER IDT5P50901/2/3/4

IDT®

SPREAD SPECTRUM CLOCK SYN THESIZER 1

IDT5P50901/2/3/4 REV F 082112

Description

The IDT5P50901/2/3/4 is a family of 1.8V low power, spread

spectrum clock generators capable of reducing EMI

radiation from an input clock. Spread spectrum technique is

capable of reducing the harmonic frequency amplitude

peaks by several dB.

Ordering Information

Input Frequency

10 to 25 MHz - 5P50901NBGI/5P50901DVGI

20 to 50 MHz - 5P50902NBGI/5P50902DVGI

40 to 100 MHz - 5P50903NBGI/5P50903DVGI

80 to 170 MHz - 5P50904NBGI/5P50904DVGI

Features

•8-pin DFN package (2x2mm)

8-pin MSOP package (3x4.9mm)

•Provides a spread spectrum output clock

•Input frequency range of 10 to 170 MHz

•Output frequency range of 10 to 170 MHz

•Center and down spread

•Peak reduction by 8 dB to 16 dB typical on 3rd through

19th odd harmonics

•Low EMI feature can be disabled

•Operating voltage of 1.8 V, 2.5 or 3.3V

•RoHS 6 compliant package

Spread Modulation Frequency Table

Block Diagram

Part

Number

Input

(MHz) Modulation

(kHz) Input

(MHz) Modulation

(kHz) Modulation

Frequency (kHz)

5P50901 10 27 25 67.5 ICLK*27/10000

5P50902 20 27 50 67.5 ICLK*27/20000

5P50903 40 27 100 67.5 ICLK*27/40000

5P50904 80 27 170 57.4 ICLK*27/80000

VDD

GND

ICLK PLL C lock

Synthesizer with

Spread Spectrum

Circuitry

CLKOUT

S2:S0

IDT5P50901/2/3/4

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Pin Assignment

Spread Direction and Percentage Select Table

Pin Description

S2 S1 S0 Spread

Direction Spread

Percentage

000 OFF --

0 0 1 Center ±0.25

010 Center ±0.5

011 Center ±1.0

100 Center ±1.5

101 Center ±2.0

110 Down -0.5

111 Down -1.0

Number

Name

Pin Type Pin Description

1 ICLK Input Input clock.

2 VDD Power Voltage supply. Connect to 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%,

3 S0 Input Function select 0 input. Selects spread amount and direction per table above.

Internal pull-down resistor.

4 S1 Input Function select 1 input. Selects spread amount and direction per table above.

Internal pull-down resistor.

5 S2 Input Function select 2 input. Selects spread amount and direction per table above.

Internal pull-down resistor.

6 GND Power Connect to ground.

7 CLKOUT Output Clock output.

8 VDD Power Voltage supply. Connect to 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%

VDD

GND

CLKOUT

ICLK

VDD

8-pin DFN

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

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IDT5P50901/2/3/4 REV F 082112

External Components

Decoupling Capacitor

As with any high-performance mixed-signal IC, the

IDT5P50901/2/3/4 must be isolated from system power

supply noise to perform optimally.

A decoupling capacitor of 0.01µF must be connected

between each VDD and the PCB ground plane.

Series Termination Resistor

Clock output traces over one inch should use series

termination. To series terminate a 50Ω trace (a commonly

used trace impedance), place a 33Ω resistor in series with

the clock line, as close to the clock output pin as possible.

The nominal impedance of the clock output is 20Ω.

External Clock Input

This device operates from an external clock input and as

such does not have a on chip oscillator circuit.

PCB Layout Recommendations

For optimum device performance and lowest output phase

noise, the following guidelines should be observed.

1) The 0.01µF decoupling capacitors should be mounted on

the component side of the board as close to the VDD pin as

possible. No vias should be used between the decoupling

capacitors and VDD pins. The PCB trace to VDD pins

should be kept as short as possible, as should the PCB

trace to the ground via.

2) To minimize EMI, the 33Ω series termination resistor (if

needed) should be placed close to the clock output.

3) An optimum layout is one with all components on the

same side of the board, minimizing vias through other signal

layers. Other signal traces should be routed away from the

IDT5P50901/2/3/4. This includes signal traces just

underneath the device, or on layers adjacent to the ground

plane layer used by the device.

Spread Spectrum Profile

The IDT5P50901/2/3/4 is a low EMI clock generator using

an optimized frequency slew rate algorithm to facilitate down

stream tracking of zero delay buffers and other PLL devices.

The modulation rate is directly relate to the input clock

frequency.

For input frequency ICLK, then use the modulation

frequency indicated for the part below.

Time

Frequency

Modulation Rate

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

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IDT5P50901/2/3/4 REV F 082112

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the IDT5P50901/2/3/4. These ratings,

which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the

device at these or any other conditions above those indicated in the operational sections of the specifications is not

implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability.

Electrical parameters are guaranteed only over the recommended operating temperature range.

Recommended Operation Conditions

Item Rating

Supply Voltage, VDD -0.5 V to 5.0 V

All Inputs -0.5 V to VDD +0.5 V

Ambient Operating Temperature -40 to +85°C

Storage Temperature -50 to +150°C

Junction Temperature 125°C

Soldering Temperature 260°C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature -40 +85 °C

Power Supply Voltage VDD (measured in respect to GND) +1.7 +1.8 +1.9 V

+2.25 +2.5 +2.75 V

+2.97 +3.3 +3.63 V

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

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IDT5P50901/2/3/4 REV F 082112

DC Electrical Characteristics

Unless stated otherwise, VDD = 1.8 V ±0.1 V. Ambient Temperature -40 to +85°C

Unless stated otherwise, VDD = 2.5 V ±10%. Ambient Temperature -40 to +85°C

Unless stated otherwise, VDD = 3.3 V ±10%. Ambient Temperature -40 to +85°C

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 1.7 1.8 1.9 V

Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V

Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V

Output High Voltage VOH IOH = -12 mA VDD x 0.75 VDD V

Output Low Voltage VOL IOL = 12 mA GND VDD x 0.25 V

IDD No load See table page 6

Input Capacitance 5 pF

Load Capacitance 5 pF

Internal Pull-down

Resistor

RPD S1:S0 200 260 kΩ

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 2.25 2.5 2.75 V

Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V

Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V

Output High Voltage VOH IOH = -25 mA VDD x 0.9 VDD V

Output Low Voltage VOL IOL = 25 mA GND VDD x 0.1 V

IDD No load See table page 6

Input Capacitance 5 pF

Load Capacitance 5 pF

Internal Pull-down

Resistor

RPD S1:S0 200 260 kΩ

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 2.97 3.3 3.63 V

Input High Voltage VIH ICLK, S2:S0 VDD x 0.8 VDD + 0.3 V

Input Low Voltage VIL ICLK, S2:S0 GND VDD x 0.2 V

Output High Voltage VOH IOH = -33 mA VDD x 0.9 VDD V

Output Low Voltage VOL IOL = 33 mA GND VDD x 0.1 V

IDD No load See table page 6

Input Capacitance 5 pF

Load Capacitance 5 pF

Internal Pull-down

Resistor

RPD S1:S0 200 260 kΩ

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

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IDT5P50901/2/3/4 REV F 082112

Operational IDD

AC Electrical Characteristics

Unless stated otherwise, VDD = 1.8 V ±0.1 V, 2.5 V ±10% or 3.3 V ±10%. Ambient Temperature -40 to +85°C

Note 1: Measured with 5 pF load

Note 2: Time between VDD rising above minimum operating voltage and stable frequency output

Parameter Symbol Conditions Min. Typ. Max. Units

Output Clock Duty Cycle 45 50 55 %

1.8V ±0.1V, >130MHz 40 50 60

Output Rise Time tOR 20% to 80%, Note 1 1.2 ns

Output Fall Time tOF 80% to 20%, Note 1 1.2 ns

Spread Spectrum Modulation

Rate

10 to 25 MHz input (IDT5P50901) 27 67.5 kHz

20 to 50 MHz input (IDT5P50902) 27 67.5 kHz

40 to 100 MHz input (IDT5P50903) 27 67.5 kHz

80 to 170 MHz input (IDT5P50904) 27 57.3 kHz

Jitter Cycle to Cycle Cycle to cycle jitter 150 ps

Output Settling Time Note 2 3.0 ms

IDT5P50901

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

10 15 20 25

Fin

Idd (mA)

3.3V

2.5V

1.8V

IDT5P50902

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

20 25 30 35 40 45 50

Fin (MHz)

Idd (mA)

3.3V

2.5V

1.8V

IDT5P50903

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

40 50 60 70 80 90 100

Fin (MHz)

Idd (mA)

3.3V

2.5V

1.8V

IDT5P50904

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

80 100 120 140 160

Fin (MHz)

Idd (mA)

3.3V

2.5V

1.8V

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

SPREAD SPECTRUM CLOCK SYN THESIZER 7

IDT5P50901/2/3/4 REV F 082112

Package Outline and Package Dimensions (8-pin DFN 2x2mm, 0.5mm pitch)

Package dimensions are kept current with JEDEC Publication No. 95,

Marking Diagram (8DFN)

Notes:

1. #### is the last four numbers of the lot number.

2. Dot indicates pin 1.

3. “G” designates Pb (lead) free package.

Millimeters

Symbol Min Max

A 0.80 1.00

A1 0 0.05

A3 0.20 Reference

b 0.20 0.30

ND4

NE0

D 2.00 BASIC

E 2.00 BASIC

e 0.50 BASIC

D2 1.05 1.25

E2 0.45 0.65

L 0.20 0.40

aaa 0.15

bbb 0.10

ccc 0.10

####

9xGI

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

SPREAD SPECTRUM CLOCK SYN THESIZER 8

IDT5P50901/2/3/4 REV F 082112

Package Outline and Package Dimensions (8-pin MSOP, 3.00 mm Body)

Package dimensions are kept current with JEDEC Publication No. 95

Marking Diagram (8 MSOP)

Notes:

1.YYWW is the assembly date code.

2. Dot indicates pin 1.

3. “G” designates Pb (lead) free package.

4. “I” designates industrial temperature range.

INDEX

AREA

1 2

E1 E

SEATING

PLANE

- C -

aaa C

*For reference only. Controlling dimensions in mm.

Millimeters Inches*

Symbol Min Max Min Max

A--1.10--0.043

A1 0 0.15 0 0.006

A2 0.79 0.97 0.031 0.038

b 0.22 0.38 0.008 0.015

C 0.08 0.23 0.003 0.009

D 3.00 BASIC 0.118 BASIC

E 4.90 BASIC 0.193 BASIC

E1 3.00 BASIC 0.118 BASIC

e 0.65 Basic 0.0256 Basic

L 0.40 0.80 0.016 0.032

α0°8°0°8°

aaa - 0.10 - 0.004

YYWW

90xGI

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

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IDT5P50901/2/3/4 REV F 082112

Ordering Information

"G" after the two-letter package code denotes Pb-Free configuration, RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes

no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No

other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications

such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not

recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT

does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

Part / Order Number Marking Shipping Packaging Package Temperature

5P50901NBGI8

see pages 7,8

Tape and Reel 8-pin DFN -40°C to +85°C

5P50901DVGI Tube 8-pin MSOP -40°C to +85°C

5P50901DVGI8 Tape and Reel 8-pin MSOP -40°C to +85°C

5P50902NBGI8 Tape and Reel 8-pin DFN -40°C to +85°C

5P50902DVGI Tube 8-pin MSOP -40°C to +85°C

5P50902DVGI8 Tape and Reel 8-pin MSOP -40°C to +85°C

5P50903NBGI8 Tape and Reel 8-pin DFN -40°C to +85°C

5P50903DVGI Tube 8-pin MSOP -40°C to +85°C

5P50903DVGI8 Tape and Reel 8-pin MSOP -40°C to +85°C

5P50904NBGI8 Tape and Reel 8-pin DFN -40°C to +85°C

5P50904DVGI Tube 8-pin MSOP -40°C to +85°C

5P50904DVGI8 Tape and Reel 8-pin MSOP -40°C to +85°C

IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER

IDT®

SPREAD SPECTRUM CLOCK SYN THESIZER 10

IDT5P50901/2/3/4 REV F 082112

Revision History

Rev. Date Originator Description of Change

A 6/28/11 R. WIllner Initial release.

B 6/30/11 R. Willner Correct modulation rate on 5P50904, rise/fall time definition.

C 07/29/11 R. Willner Added “Internal Pull-down Resistor” spec to DC char tables

D 10/07/11 R. Willner Correct typographical errors.

E 05/14/12 R. Willner Changed max Supply Voltage VDD rating from 7.0V to 5.0V

F 08/21/12 R. Willner 1. Changed "Output High/Low Voltage" specs; conditions and min/max values for 1.8V DC

electrical characteristics

2. Added an additional line for "Output Clock Duty Cycle" in AC char table to include

conditions and values for 1.8V

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trademarks used to identify products or services of their respective owners.

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800-345-7015

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Fax: 408-284-2775

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www.idt.com/go/clockhelp

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IDT5P50901/2/3/4

SPREAD SPECTRUM CLOCK SYNTHESIZER CLOCK SYNTHESIZER