参数资料
型号: MC145151DW2
厂商: Freescale Semiconductor
文件页数: 9/24页
文件大小: 0K
描述: IC PAR-IN PLL FREQ SYNTH 28-SOIC
标准包装: 26
类型: PLL 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: 1:1
差分 - 输入:输出: 无/无
频率 - 最大: 25MHz
除法器/乘法器: 是/无
电源电压: 3 V ~ 9 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
MC145151-2 and MC145152-2 Electrical Characteristics
MC145151-2 and MC145152-2 Technical Data, Rev. 5
Freescale Semiconductor
17
Figure 11. Phase Detector/Lock Detector Output Waveforms
Table 6. Frequency Characteristics
(Voltages References to VSS, CL = 50 pF, Input tr = tf =10 ns unless otherwise indicated)
Symbol
Parameter
Test Condition
VDD
V
- 40
°C
25
°C
85
°C
Unit
Min
Max
Min
Max
Min
Max
fi
Input Frequency
(fin, OSCin)
R
≥ 8, A ≥ 0, N ≥ 8
Vin = 500 mV p-p ac coupled
sine wave
3
5
9
-
6
15
-
6
15
-
6
15
MHz
R
≥ 8, A ≥ 0, N ≥ 8
Vin = 1 V p-p ac coupled
sine wave
3
5
9
-
12
22
25
-
12
20
22
-
7
20
22
MHz
R
≥ 8, A ≥ 0, N ≥ 8
Vin = VDD to VSS dc coupled
square wave
3
5
9
-
13
25
-
12
22
25
-
8
22
25
MHz
Note: Usually, the PLL's propagation delay from fin to MC plus the setup time of the prescaler determines the upper frequency
limit of the system. The upper frequency limit is found with the following formula: f = P/(tP + tset) where f is the upper frequency
in Hz, P is the lower of the dual modulus prescaler ratios, tP is the fin to MC propagation delay in seconds, and tset is the prescaler
setup time in seconds. For example, with a 5 V supply, the fin to MC delay is 70 ns. If the MC12028A prescaler is used, the setup
time is 16 ns. Thus, if the 64/65 ratio is utilized, the upper frequency limit is f = P/(tP + tset) = 64/(70 + 16) = 744 MHz.
VH=High Voltage Level.
VL=Low Voltage Level.
* At this point, when both fR and fV are in phase, the output is forced to near mid-supply.
NOTE: The PDout generates error pulses during out-of-lock conditions. When locked in phase and frequency the output is high
and the voltage at this pin is determined by the low-pass filter capacitor.
fR
REFERENCE
OSC
÷ R
fV
FEEDBACK
(fin ÷ N)
PDout
φ
R
φ
V
LD
*
VH
VL
VH
VL
VH
HIGH IMPEDANCE
VH
VL
VH
VL
VH
VL
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