MK2761A Datasheet, PDF (1/6 Pages) Integrated Circuit Systems – Package Outline and Package Dimensions (16-pin SOIC, 150 Mil. Narrow Body)

MK2761A
SET-TOP CLOCK SOURCE
Description
The MK2761A is a low-cost, low-jitter,
high-performance clock synthesizer for set-top box
applications. Using analog Phase-Locked Loop (PLL)
techniques, the device accepts a 27 MHz crystal or
clock input to produce multiple output clocks including
the processor clock, the UART clock, a selectable
audio clock, and four low skew copies of the 27 MHz.
The audio clocks are frequency-locked to the 27 MHz
using our patented zero ppm error techniques. This
allows audio and video to track exactly, thereby
eliminating the need for large buffer memory.
ICS manufactures a large variety of Set-top Box and
multimedia clock synthesizers for all applications.
Consult ICS to eliminate crystals and oscillators from
your board.
Features
• Packaged in a 16-pin narrow (150 mil) SOIC
• Available in Pb (lead) free package
• Selectable audio sampling frequencies support 32,
44.1, and 48 kHz in most DACs
• 27 MHz crystal or clock input
• Processor frequency of 16.67 MHz
• Fixed clocks of 27 and 3.6864 MHz
• Zero ppm in audio clocks exactly track video
frequency
• 25 mA output drive capability at TTL levels
• Advanced, low-power, sub-micron CMOS process
• Operating voltage of 5.0 V ±10%
Block Diagram
VDD
2
ACS1:0
27.000 MHz
crystal or clock
X1
X2
2
Crystal
Ocsillator
Clock
Synthesis and
Control
Circuitry
3
GND
Audio Clock
3.6864 MHz
16.667 MHz
4
27.000 MHz
MDS 2761A D
1
Revision 070705
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel [phone] ● www.icst.com