MK1705S IDT, Integrated Device Technology Inc, MK1705S Datasheet

MK1705S

Manufacturer Part Number

MK1705S

Description

IC CLK GEN ATI LOW EMI 8-SOIC

Manufacturer

IDT, Integrated Device Technology Inc

Type

Clock Generatorr

Datasheet

1.MK1705.pdf (6 pages)

Specifications of MK1705S

Pll

Yes

Input

Clock

Output

CMOS

Number Of Circuits

Ratio - Input:output

1:1

Differential - Input:output

No/No

Frequency - Max

167MHz

Divider/multiplier

No/Yes

Voltage - Supply

3 V ~ 5.5 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

8-SOIC

Frequency-max

167MHz

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MK1705S

Manufacturer:

UCLUCK

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MK1705STR

Manufacturer:

ICS

Quantity:

16 105

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ATI LOW EMI CLOCK GENERATOR

Description

The MK1705A generates a low EMI output clock from a

clock or crystal input. The part is designed to dither the LCD

interface clock or other clocks for ATI’s flat panel graphics

controllers. The MK1705A uses IDT’s proprietary mixture of

analog and digital Phase Locked Loop (PLL) technology to

synthesize the frequency. It also uses IDT’s patented

technique to spread the frequency spectrum of the output,

thereby reducing the frequency amplitude peaks by several

dB.

The MK1705A is designed to have the output spread

centered around the input frequency. Refer to the MK1704A

for spreading down from the input frequency or the

MK1714-0x for a crystal input and the widest selection of

spread rates and multipliers.

IDT offers many other clocks for computers and computer

peripherals. Consult IDT when you need to remove crystals

and oscillators from your board.

Note: When changing input frequency, the LEE pin must be

set low for a minimum of 10µS to allow the PLL to lock to

the new frequency. Alternatively, the PD pin maybe be set

low while changing frequencies.

Block Diagram

IDT™ / ICS™ ATI LOW EMI CLOCK GENERATOR

Low EMI Enable

Power Down

Input Clock

S1:0

Buffer

Input

and Spread

PLL Clock

Synthesis

Spectrum

Circuitry

GND

VDD

Features

•

8-pin SOIC package

Provides a spread spectrum output clock

Supports ATI’s flat panel controllers

Accepts a clock input, provides same frequency dithered

output

Good for all VGA modes from 40 to 167 MHz

Peak reduction by 7 dB - 14 dB typical on 3rd - 19th odd

harmonics

Low EMI feature can be disabled

Operating voltage of 3.3 V or 5 V

Advanced, low power CMOS process

MK1705A

CLK

DATASHEET

MK1705A

REV D 110806

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