DSC511-03DM5-R0001T [MICREL]

Crystal-less Two Output Clock Generator;


型号：	DSC511-03DM5-R0001T
厂家：	MICREL SEMICONDUCTOR
描述：	Crystal-less Two Output Clock Generator 时钟光电二极管外围集成电路
文件：	总5页 (文件大小：528K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DSC511-03

Crystal-less Two Output Clock Generator

General Description

Features

The DSC511-03 is a crystal-less, two output

clock generator. The clock generator uses

proven silicon MEMS technology to provide

excellent jitter and stability over a wide

range of supply voltages and temperatures.

By eliminating the external quartz crystal,

 Low RMS Phase Jitter: <1 ps (typ)

 High Stability: ±10, ±25, ±50 ppm

 Wide Temperature Range

o Automotive: -55° to 125° C

o Ext. Industrial: -40° to 105° C

o Industrial: -40° to 85° C

MEMS

clock

generators

significantly

enhance reliability and accelerate product

development, while meeting stringent clock

performance criteria for a variety of

communications, storage, and networking

applications.

o Ext. commercial: -20° to 70° C

 High Supply Noise Rejection: -50 dBc

 Two Independent CMOS Outputs

 Short Lead Times: 2 Weeks

DSC511-03 has a Output Enable / Disable

feature allowing it to disable the outputs

when OE is low. The device is available in a

space saving 6 pin 2.5 x 2.0 mm QFN

package.

 Wide Freq. Range:

o CMOS Output: 2.3 to 170 MHz

 Miniature Footprint of 2.5 x 2.0 mm

 Excellent Shock & Vibration Immunity

o Qualified to MIL-STD-883

 High Reliability

o 20x better MTF than quartz oscillators

 Supply Range of 2.25 to 3.6 V

 Lead Free & RoHS Compliant

Block Diagram

Control Circuitry

Applications

CLK0

Output

Control

and

MEMS

PLL

 Consumer Electronics

 Solid State Storage

Divider

CLK1

 Storage Area Networks

 Passive Optical Networks

o EPON, 10G-EPON, GPON, 10G-PON

 Ethernet

o 1G, 10GBASE-T/KR/LR/SR, and FCoE

 HD/SD/SDI Video & Surveillance

 Industrial and Medical

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DSC511-03 Page 1 MK-QB-P-D-130103-01-1

Crystal-less Two Output PCIe Clock Generator

DSC511-03

Specifications (Unless specified otherwise: T=25° C, VDD =3.3V)

Parameter

Supply Voltage¹

Supply Current

Supply Current²

Condition

Min.

2.25

Typ.

Max.

3.6

Unit

V_DD

I_DD

EN pin low – outputs are disabled

EN pin high – outputs are enabled

C_L=15pF, F_O1=F_O2=125 MHz

Includes frequency variations due

to initial tolerance, temp. and

power supply voltage

I_DD

±10

±25

±50

±5

Frequency Stability

Aging

Startup Time³

Δf

ppm

Δf

t_SU

1 year @25°C

T=25°C

ppm

Input Logic Levels

Input logic high

Input logic low

V_IH

V_IL

0.75xV_DD

0.25xV_DD

Output Disable Time⁴

Output Enable Time

Pull-Up Resistor²

t_DA

t_EN

Pull-up exists on all digital IO

I=±6mA

kΩ

Output Logic Levels

Output logic high

Output logic low

Output Transition time⁴

Rise Time

V_OH

V_OL

0.9xV_DD

0.1xV_DD

20% to 80%

C_L=15pf

t_R

t_F

1.1

1.4

Fall Time

Commercial/Industrial temp range

Automotive temp range

2.3

170

100

Frequency

f₀

MHz

Output Duty Cycle

Period Jitter⁵

SYM

J_PER

ps_RMS

F_O1=F_O2=125 MHz

200kHz to 20MHz @ 125MHz

100kHz to 20MHz @ 125MHz

12kHz to 20MHz @ 125MHz

0.3

0.38

1.7

Integrated Phase Noise

J_CC

ps_RMS

Notes:

Pin 4 V_DDshould be filtered with 0.01uf capacitor.

Output is enabled if Enable pad is floated or not connected.

t_suis time to 100PPM stable output frequency after V_DDis applied and outputs are enabled.

Output Waveform and Test Circuit figures below define the parameters.

Period Jitter includes crosstalk from adjacent output.

Absolute Maximum Ratings

Item

Min

-0.3

Max

Unit

Condition

Supply Voltage

Input Voltage

Junction Temp

Storage Temp

Soldering Temp

+4.0

V_DD+0.3

+150

°C

-55

+150

+260

40sec max.

ESD

HBM

4000

400

CDM

1500

______________________________________________________________________________________________________________________________________________

DSC511-03 Page 2 MK-QB-P-D-130103-01-1

Crystal-less Two Output PCIe Clock Generator

DSC511-03

Solder Reflow Profile

20-40

Sec

260°C

217°C

200°C

60-150

Sec

Reflow

60-180

Sec

150°C

Cool

Pre heat

25°C

Time

8 min max

6 QFN

MSL 1 @ 260°C refer to JSTD-020C

Ramp-Up Rate (200°C to Peak Temp)

Preheat Time 150°C to 200°C

Time maintained above 217°C

Peak Temperature

Time within 5°C of actual Peak

Ramp-Down Rate

3°C/Sec Max.

60-180 Sec

60-150 Sec

255-260°C

20-40 Sec

6°C/Sec Max.

8 min Max.

Time 25°C to Peak Temperature

OE Function and Output Waveform: LVCMOS

t_R

t_F

V_OH

675 mV

Output

Enable

V_OL

t_EN

1/f_o

t_DA

V_IH

V_IL

______________________________________________________________________________________________________________________________________________

DSC511-03 Page 3 MK-QB-P-D-130103-01-1

Crystal-less Two Output PCIe Clock Generator

DSC511-03

Ordering Information

DSC511-03 D I 2 - R0001 T

Package

D: 2520 6pin

Packing

T: Tape & Reel

: Tube

Temp Range

E: -20 to 70

I: -40 to 85

L: -40 to 105

M: -55 to 125

Frequency

Rxxxx

Stability

1: ±50ppm

2: ±25ppm

5: ±10ppm

Output Clock Frequencies

Table 2 lists the standard default frequency configurations and the associated ordering information

to be used in conjunction with the ordering code. Customer defined combinations are available.

Table 2. Pre-programmed output frequency pairs

CLK 1

(MHz)

CLK 2

(MHz)

Ordering Info

R0001

25.0000

RXXXX

______________________________________________________________________________________________________________________________________________

DSC511-03 Page 4 MK-QB-P-D-130103-01-1

Crystal-less Two Output PCIe Clock Generator

DSC511-03

Package Dimensions

EXTERNAL DIMENSIONS

RECOMMENDED SOLDER PAD LAYOUT

Units: mm [ inches]

2.5±0.05 [0.098±0.002]

0.7±0.1 [0.079±0.002]

0.825 [0.032]

0.6 REF

Via to

Power Trace

0.375

Via to Ground

Plane

0.535 REF

0.765±0.1

0.7 REF

0.7±0.1 [0.079±0.002]

2.0±0.05 [0.079±0.002]

0.65±0.05 [0.026±0.002]

0.25±0.05 [0.099±0.002]

0.85

0.65±0.05 [0.026±0.002]

0.25±0.05 [0.099±0.002]

No.

Pin Terminal

Enable

N/C

0.85±0.05

Ground

CLK0

CLK1

VDD

Disclaimer:

Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information

is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and

descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted

by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims

any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose,

merchantability, or infringement of any patent, copyright or other intellectual property right.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can

reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the

body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or

sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any

damages resulting from such use or sale.

MICREL, Inc.

Phone: +1 (408) 944-0800

●

2180 Fortune Drive,

Fax: +1 (408) 474-1000

San Jose, California

95131

●

USA

●

Email: hbwhelp@micrel.com

www.micrel.com

______________________________________________________________________________________________________________________________________________

DSC511-03

Page 5

MK-QB-P-D-130103-01-1

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