Datasheet > MK1418

MK1418

更新时间： 2024-11-26 22:30:07

品牌	Logo	应用领域
矽成 - ICSI		解码器编解码器时钟
页数	文件大小	规格书
4页	33K
描述
OPL3, OPL4 + Codec Clock Source

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中文翻译

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数据手册

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MK1418 数据手册

MK1418/MK1420

OPL3, OPL4 + Codec Clock Source

Description

Features

• Packaged in 8 pin SOIC

• Input crystal or clock frequency of 14.318 MHz

• MK1418 is clock input only

• MK1420 output clock frequencies of 16.934MHz,

24.576 MHz, 33.868 MHz, and 14.318 MHz

• Advanced, low power CMOS process

• Lowest jitter in industry for best audio

performance

• Insensitive to input clock duty cycle

• 50% (typ) 14.318 MHz duty cycle with crystal

The MK1418 and MK1420 are the ideal way to

generate clocks for new sound cards. The MK1420

provides clocks for Analog Devices’ AD1848,

Crystal Semiconductor’s CS4231, and Yamaha’s

OPL3L, OPL3LS, and OPL4. The MK1420 uses

either a 14.318 MHz crystal, or a 14.318 MHz bus

clock input to synthesize the clocks required to

drive the codec, and the 33.868 MHz required for

the FM or wavetable music synthesizer. The chips

are ideal for add-in sound cards and motherboards

with integrated sound. In an 8 pin SOIC, the

MK1420 can save component count, board space,

and cost over surface mount crystals, and increase

reliability by eliminating three or four mechanical

devices from the board.

AC Coupling/Portable Applications

For applications in portable computers, it is possible

to drive the input clock with a 3.3V, 14.318MHz

clock by a.c. coupling using a 0.01µF capacitor

connected in series to the CLKIN pin. But the

operating VDD on pin 2 must be 5V±10%. This

technique is also effective if the input clock doesn’t

meet the VIH and VIL specifications on page 3.

MicroClock offers many other parts with stereo

codec support. The MK1430 has 5 output clocks,

the MK1448 has 7, the MK1444 has eight

including DSP clocks, and the MK1450/1 offers

Pentium™ and SCSI support, plus the stereo

codec clocks.

Additional Clocks or Features

If more than these four output clocks or features

such as power down are needed, MicroClock has

many other products in development. Consult

MicroClock for your specific needs.

Block Diagram

VDD GND

Output

16.934 MHz

Buffer

Clock Synthesis

Circuitry

Output

Buffer

24.576 MHz

14.318 MHz

crystal or clock

Output

Buffer

33.868 MHz

(MK1420 only)

Crystal

Oscillator

Output

Buffer

14.318 MHz

(MK1420 only)

MDS 1418/20 A

Revision 013098

Printed 11/15/00

MicroClock Division of ICS•1271 Parkmoor Ave.•San Jose•CA•95126•(408)295-9800tel•(408)295-9818fax

12 3 4

中文翻译

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与MK1418相关器件

型号	品牌	获取价格	描述	数据表
MK1418S	ICSI	获取价格	OPL3, OPL4 + Codec Clock Source
MK1418STR	ICSI	获取价格	OPL3, OPL4 + Codec Clock Source
MK1418STRLF	IDT	获取价格	Clock Generator, 24.576MHz, CMOS, PDSO8, SOIC-8
MK14-1A66B-100W	MEDER	获取价格	MK Reed Sensors
MK14-1A66B-100W_DE	MEDER	获取价格	(deutsch) MK Reed Sensor
MK14-1A66B-1200W	MEDER	获取价格	MK Reed Sensors
MK14-1A66B-1200W_09	MEDER	获取价格	MK Reed Sensor
MK14-1A66B-1200W_DE	MEDER	获取价格	(deutsch) MK Reed Sensor
MK14-1A66B-1700W	MEDER	获取价格	MK Reed Sensors
MK14-1A66B-1700W_DE	MEDER	获取价格	(deutsch) MK Reed Sensor

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