DSC501-051144KE0T [MICROCHIP]

OTHER CLOCK GENERATOR;


型号：	DSC501-051144KE0T
厂家：	MICROCHIP
描述：	OTHER CLOCK GENERATOR 时钟外围集成电路
文件：	总7页 (文件大小：653K)
中文：	中文翻译
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DSC501-05

Crystal-less™ Four Output MFP Clock Generator

General Description

Features

The DSC501-05 is a Crystal-less™, four

 Three CMOS Outputs

output multifunction printer 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, MEMS clock

generators significantly enhance reliability

and accelerate product development, while

meeting stringent clock performance criteria

for a variety of applications.

o 60MHz

o 66.6667MHz

o 60MHz or 100MHz selectable

 One PCIe 100MHz HCSL Output

 Available Output Formats:

o CMOS, HCSL, LVPECL, or LVDS

o Mixed Outputs: CMOS/LVPECL/HCSL/LVDS

DSC501-05 has an Output Enable / Disable

feature allowing it to disable all outputs

when OE1 and OE2 are low. See the OE

 Wide Temperature Range

o Ext. Industrial: -40° to 105° C

function diagram for more detail.

The

o Industrial: -40° to 85° C

device is available in a 20 pin QFN.

Additional output formats are in any

combination of CMOS, LVPECL, LVDS, and

HCSL.

o Ext. commercial: -20° to 70° C

 Supply Range of 2.25 to 3.6 V

 Low Power Consumption

o 30% lower than competing devices

 Excellent Shock & Vibration Immunity

o Qualified to MIL-STD-883

Block Diagram

 Available Footprints:

o 20 QFN

 Lead Free & RoHS Compliant

 Short Lead Time: 2 Weeks

 AEC-Q100 Automotive Qualified

Applications

o Multifunction Printer

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DSC501-05 Page 1

Crystal-less Four Output MFP Clock Generator

DSC501-05

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

Parameter

Condition

Min.

Typ.

Max.

Unit

Supply Voltage¹

V_DD

I_DD

2.25

3.6

EN pin low – outputs are

disabled

EN pin high – outputs are

enabled

Supply Current

Supply Current²

(Four HCSL Outputs)

I_DD

120

R_L=50 Ω,

F_O1=F_O2=F_O3= F_O4=100 MHz

Includes frequency variations

due to initial tolerance, temp.

and power supply voltage

T=25°C

±100

Frequency Stability

Δf

ppm

±50

Startup Time³

Input Logic Levels

Input logic high

Input logic low

t_SU

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 on OE pin

kΩ

HCSL Outputs⁶

Condition

Parameter

Min.

Typ.

750

Max.

Unit

Output Logic Levels

Output logic high

Output logic low

V_OH

V_OL

R_L=50Ω

0.725

0.1

Pk to Pk Output Swing

Output Transition time⁴

Rise Time

Single-Ended

20% to 80%

R_L=50Ω, C_L= 2pF

t_R

t_F

200

400

Fall Time

Frequency

f₀

Single Frequency

Differential

2.3

100⁷

460

MHz

Output Duty Cycle

Period Jitter⁵

SYM

J_PER

F_O1=F_O2= F_O3= F_O4=100 MHz

2.5

ps_RMS

T_J

PCIe Gen 1.1

22.7

86.0⁸

ps_p-p

Jitter, Phase

(Common Clock

Architecture)

J_RMS-CCHF

J_RMS-CCLF

J_RMS-CC

PCIe Gen 2.1, 1.5MHz to Nyquist

PCIe Gen 2.1, 10 kHz to 1.5 MHz

PCIe Gen 3.0

2.20

0.08

0.37

3.1⁸

3.0⁸

1.0⁸

ps_RMS

J_RMS-DCHF

PCIe Gen 2.1, 1.5MHz to Nyquist

2.15

4.0⁸

7.5⁸

1.0⁸

ps_RMS

Integrated Phase Noise

(Data Clock

Architecture)

J_RMS-DCLF

J_RMS-DC

PCIe Gen 2.1, 10 kHz to 1.5 MHz

PCIe Gen 3.0

0.06

0.32

ps_RMS

Notes:

1. Each V_DDpin should be filtered with 0.01uf capacitor.

2. Output is enabled if OE pin is floated or not connected.

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

4. Output Waveform and Connection Diagram define the parameters.

5. Period Jitter includes crosstalk from adjacent output.

6. Contact Sales@Discera.com for alternate output options (LVPECL, LVDS, LVCMOS).

7. Contact Sales@Discera.com for alternative frequency options

8. Jitter limits established by Gen 1.1, Gen 2.1, and Gen 3.0 PCIe standards.

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DSC501-05 Page 2

Crystal-less Four Output MFP Clock Generator

DSC501-05

Absolute Maximum Ratings

Item

Min

-0.3

Max

+4.0

Unit

Condition

Supply Voltage

Input Voltage

Junction Temp

Storage Temp

Soldering Temp

V_DD+0.3

+150

°C

-55

+150

+260

40sec max.

ESD

HBM

4000

400

CDM

1500

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

20 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

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DSC501-05 Page 3

Crystal-less Four Output MFP Clock Generator

DSC501-05

Pin Description (20 QFN)

Pin No.

Pin Name

OE1

Pin Type

Description

Power

Output Enable; active high

Leave unconnected or grounded

Ground

VSS

CLK0-

CLK0+

CLK1-

Ground

Complement output of differential pair

True output of differential pair (60MHz LVCMOS Default)

Complement output of differential pair

True output of differential pair

(66.6667MHz LVCMOS Default)

Power Supply

CLK1+

VDD

OE2

Power

Leave unconnected or grounded

Output Enable; active high

Leave unconnected or grounded

Ground

VSS

Ground

CLK2-

CLK2+

CLK3-

CLK3+

VDD

Complement output of differential pair

True output of differential pair (100MHz HCSL Default)

Complement output of differential pair

True output of differential pair

Power

Power Supply

0, CLK3 = 60MHz; 1, CLK3 = 100MHz (LVCMOS Default)

Pin Diagram (20 QFN)

Connection Diagram

(20 QFN Four HCSL Outputs)

20 19 18 17 16 15

OE1

VSS

OE2

20 QFN 5.0 x 3.2mm

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DSC501-05 Page 4

Crystal-less Four Output MFP Clock Generator

DSC501-05

OE Function and Output Waveform: HCSL or CMOS (CLK+ ONLY)

t_R

t_F

CLK+

80%

50%

20%

675mV

CLK-

1/f₀

t_DA

t_EN

V_IH

V_IL

CLK1/CLK2 Synchronous

OE1

OE2

CLK0 CLK1 CLK2 CLK3

Hi-Z

CLK0/CLK3 Synchronous

Ordering Information

DSC501-05 1 3 1 1 K I 0 T

CLK 3 Output Format

1: LVCMOS

2: LVPECL

Packing

T: Tape & Reel

3: LVDS

4: HCSL

Stability

0: ±100ppm

1: ±50ppm

CLK 2 Output Format

1: LVCMOS

2: LVPECL

3: LVDS

4: HCSL

Temp Range

E: -20 to 70

I: -40 to 85

L: -40 to 105

CLK 1 Output Format

1: LVCMOS

2: LVPECL

Package

K: 20 QFN

3: LVDS

4: HCSL

CLK 0 Output Format

1: LVCMOS

2: LVPECL

3: LVDS

4: HCSL

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DSC501-05 Page 5

Crystal-less Four Output MFP Clock Generator

DSC501-05

Package Dimensions

20 QFN, 5.0 x 3.2 mm

Top View

units: mm[inches]

Bottom View

units: mm[inches]±

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DSC501-05 Page 6

Crystal-less Four Output MFP Clock Generator

DSC501-05

Side View

units: mm[inches]

Recommended Solder Pad Layout

units: mm[inches]

*Connect the center pad to VSS for best thermal performance

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

______________________________________________________________________________________________________________________________________________

DSC501-05 Page 7

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