參數(shù)資料
型號: 74HCT7046ADB-T
廠商: NXP SEMICONDUCTORS
元件分類: PLL合成/DDS/VCOs
英文描述: PHASE LOCKED LOOP, PDSO16
封裝: PLASTIC, SSOP-16
文件頁數(shù): 31/38頁
文件大小: 468K
代理商: 74HCT7046ADB-T
December 1990
37
Philips Semiconductors
Product specication
Phase-locked-loop with lock detector
74HC/HCT7046A
Note
For an extensive description and application example please refer to application note ordering number
9398 649 90011.
Also available a computer design program for PLL’s ordering number 9398 961 10061.
Since the output frequency is proportional to the VCO control voltage, the PLL frequency response can be observed with
an oscilloscope by monitoring pin 9 of the VCO. The average frequency response, as calculated by the Laplace method,
is found experimentally by smoothing this voltage at pin 9 with a simple RC filter, whose time constant is long compared
to the phase detector sampling rate but short compared to the PLL response time.
Fig.34 Frequency synthesizer.
Fig.35 Type 1, second order frequency step response.
01
2
4
1.6
1.0
0.6
0
0.8
MGA959
3
1.4
1.2
0.4
0.2
56
7
8
ω nt
ω (t)
e
ωe n
Φ (t)
e
Φe n
0.6
0
0.4
1.0
0.2
0.4
0.2
0.6
0.8
= 5.0
ζ
0.5
0.707
1.0
= 0.3
ζ
= 2.0
ζ
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74HCT7046AD-T 功能描述:鎖相環(huán) - PLL PHASED-LOCKED LOOP W/LOCK DTCT RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
74HCT7046AM96 制造商:Rochester Electronics LLC 功能描述:- Bulk
74HCT7046AN 制造商:NXP Semiconductors 功能描述:
74HCT7046AN,112 功能描述:鎖相環(huán) - PLL PHASE LOCKED LOOP W/LOCK DETECT RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
74HCT7273(SMD) 制造商:MISCELLANEOUS 功能描述: