參數(shù)資料
型號(hào): MK2761ASLFTR
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 1/7頁
文件大?。?/td> 0K
描述: IC CLK SOURCE SET-TOP 16-SOIC
標(biāo)準(zhǔn)包裝: 2,500
類型: 時(shí)鐘/頻率合成器
PLL: 帶旁路
輸入: 時(shí)鐘,晶體
輸出: CMOS
電路數(shù): 1
比率 - 輸入:輸出: 2:7
差分 - 輸入:輸出: 無/無
頻率 - 最大: 27MHz
除法器/乘法器: 無/無
電源電壓: 4.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC
包裝: 帶卷 (TR)
DATASHEET
SET-TOP CLOCK SOURCE
MK2761A
IDT SET-TOP CLOCK SOURCE
1
MK2761A
REV F 051310
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.
IDT manufactures a large variety of Set-top Box and
multimedia clock synthesizers for all applications. Consult
IDT to eliminate crystals and oscillators from your board.
Features
Packaged in a 16-pin narrow (150 mil) SOIC
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
27.000 MHz
Crystal
Ocsillator
ACS1:0
3.6864 MHz
VDD
GND
Clock
Synthesis and
Control
Circuitry
2
3
16.667 MHz
Audio Clock
X1
X2
27.000 MHz
crystal or clock
2
4
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