Datasheet > MK1422

MK1422

更新时间： 2024-11-30 22:30:07

品牌	Logo	应用领域
矽成 - ICSI		解码器编解码器便携式时钟
页数	文件大小	规格书
4页	47K
描述
OPL3/4+Codec Portable Clock Source

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中文翻译

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MK1422 数据手册

MK1422

OPL3/4+Codec Portable Clock Source

Description

Features

• Packaged in 8 pin SOIC

The MK1422 is the ideal way to generate clocks

for sound in portable computers. It provides clocks

for Analog Devices’ or Crystal Semiconductor’s

stereo codecs, and Yamaha’s OPL3L, OPL3LS,

and OPL4. The MK1422 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. It includes a power

down pin to save power without using a FET. In an

8 pin SOIC, the MK1422 can save component

count, board space, and cost over surface mount

crystals, and increase reliability by eliminating

three mechanical devices from the board.

• Input crystal or clock frequency of 14.318 MHz

• Output clock frequencies of 16.934 MHz,

24.576 MHz, and 33.868 MHz

• 25mA drive capability at TTL levels

• Advanced, low power CMOS process

• Low jitter ensures full 16 bit S/N ratio

• Insensitive to input clock duty cycle

• Power down for portable computers

AC Coupling/Portable Applications

For applications in portable computers, see the

MK14223, which is specified to operate at 3.3V. It

is possible to drive the MK1422 with a 3.3V,

14.318MHz clock by a.c. coupling using a 0.01µF

capacitor connected in series to the X1 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. MicroClock invented sound clocks,

and has the widest product offering and greatest

production experience on these devices. The

MK1422 is pin compatible with MicroClock’s

popular MK1420 when the 14.318MHz clock

output is not used. See the MK14223 for 3.3V.

Additional Clocks or Features

If more than these three output clocks or features

such as output enable are needed, MicroClock can

provide a quick turn modification for your custom

requirements.

Block Diagram

VDD GND

All Chip

Power Down

Output

16.934 MHz

Buffer

14.318 MHz

crystal or clock

Clock Synthesis

Circuitry

Output

Buffer

24.576 MHz

33.868 MHz

X1/ICLK

Crystal

Oscillator

Output

Buffer

MDS 1422 B

Revision 080698

Printed 11/15/00

Integrated Circuit Systems•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com

12 3 4

中文翻译

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与MK1422相关器件

型号	品牌	获取价格	描述	数据表
MK14223	IDT	获取价格	Clock Generator, 33.868MHz, CMOS, PDSO8, SOIC-8
MK14223LF	IDT	获取价格	Clock Generator, 33.868MHz, CMOS, PDSO8, SOIC-8
MK14223TRLF	IDT	获取价格	Clock Generator, 33.868MHz, CMOS, PDSO8, SOIC-8
MK1422S	ICSI	获取价格	OPL3/4+Codec Portable Clock Source
MK1422STR	ICSI	获取价格	OPL3/4+Codec Portable Clock Source
MK1430FE	OHMITE	获取价格	Fixed Resistor, Metal Film, 0.25W, 143ohm, 250V, 1% +/-Tol, -50,50ppm/Cel,
MK1430FE-A52(26)	OHMITE	获取价格	Fixed Resistor, Metal Film, 0.25W, 143ohm, 250V, 1% +/-Tol, -50,50ppm/Cel,
MK1430FE-R52	OHMITE	获取价格	RES 143 OHM 1/4W 1% AXIAL
MK1430FER58	OHMITE	获取价格	RESISTOR, METAL FILM, 0.25 W, 1 %, 50 ppm, 143 ohm, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS
MK1431FE-R52	OHMITE	获取价格	RES 1.43K OHM 1/4W 1% AXIAL

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