参数资料
型号: MK1574-01STR
厂商: IDT, Integrated Device Technology Inc
文件页数: 6/10页
文件大小: 0K
描述: IC PLL FRAME RATE COMM 16-SOIC
产品变化通告: Product Discontinuation 13/May/2009
标准包装: 2,500
类型: 时钟/频率合成器
PLL:
输入: 时钟
输出: CMOS
电路数: 1
比率 - 输入:输出: 1:3
差分 - 输入:输出: 无/无
频率 - 最大: 8kHz
除法器/乘法器: 无/是
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
MK1574
3.3 VOLT FRAME RATE COMMUNICATIONS PLL
CLOCK SYNTHESIZER
IDT / ICS 3.3 VOLT FRAME RATE COMMUNICATIONS PLL
5
MK1574
REV F 111605
AC Electrical Characteristics
VDD = 3.3 V, Ambient Temperature 0 to +70
°C, unless stated otherwise
Note 1: All multipliers as shown in the table on page two are exact, and are stored in ROM on the chip.
Thermal Characteristics
Loop Bandwidth and Loop Filter Component Selection
The series-connected capacitor and resistor between CAP1 and CAP2 (pins 4 and 6) determine the dynamic
characteristics of the phase-locked loop. The capacitor must have very low leakage, therefore a high quality
ceramic capacitor is recommended. DO NOT use any type of polarized or electrolytic capacitor. The series
connected capacitor and resistor between CAP1 and CAP2 (pins 4 and 6) determine the dynamic characteristics of
the phase-locked loop. The capacitor must have very low leakage, therefore a high quality ceramic capacitor is
recommended. DO NOT use any type of polarized or electrolytic capacitor. Ceramic capacitors should have C0G or
NP0 dielectric. Avoid high-K dielectrics like Z5U and X7R; these and other ceramics which have piezoelectric
properties allow mechanical vibration in the system to increase the output jitter because the mechanical energy is
converted directly to voltage noise on the VCO input.
The values of the RC network determine the bandwidth of the PLL. The values of the loop filter components are
calculated using the constants K1 and K2 from the Loop Filter Constants table (page 7). The loop bandwidth is set
by the capacitor C and the constant K1 using the formula:
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Input Frequency
fIN
8.000
kHz
Output Clock Rise Time
tOR
0.8 to 2.0 V
1.5
ns
Output Clock Fall Time
tOF
2.0 to 0.8 V
1.5
ns
Output Clock Duty Cycle,
High time
tDC
At VDD/2
40
49 to 51
60
%
Absolute Clock Period
Jitter
1ns
Actual Mean Frequency
Error Versus Target (note
1)
Any clock selection
0
ppm
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Thermal Resistance Junction to
Ambient
θ
JA
Still air
120
°C/W
θ
JA
1 m/s air flow
115
°C/W
θ
JA
3 m/s air flow
105
°C/W
Thermal Resistance Junction to Case
θ
JC
58
°C/W
BW (Hz) =
C
K1
Equation 1
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