參數(shù)資料
型號(hào)： 74HC4046AD/T3
廠商： NXP SEMICONDUCTORS
元件分類： PLL合成/DDS/VCOs
英文描述： PLL FREQUENCY SYNTHESIZER, PDSO16
封裝： SOT-109, SOP-16
文件頁數(shù)： 19/34頁
文件大?。?/td> 442K
代理商： 74HC4046AD/T3
1997 Nov 25
26
Philips Semiconductors
Product specication
Phase-locked-loop with VCO
74HC/HCT4046A
VCO frequency characteristic
VCO frequency
with extra
offset
PC1, PC2 or PC3
With R1 and R2 within the ranges 3 k
< R1 < 300 k,
3k
< R2 < 300 k, the characteristics of the VCO operation will be as
shown in Fig.26.
Fig.26 Frequency characteristic of VCO operating with offset:
fo = centre frequency; 2fL = frequency lock range.
Selection of R1, R2 and C1
PC1, PC2 or PC3
Given fo and fL, determine the value of product R1C1 by using Fig.31.
Calculate foff from the equation foff =fo 1.6fL.
Obtain the values of C1 and R2 by using Fig.30.
Calculate the value of R1 from the value of C1 and the product R1C1.
PLL conditions
with no signal at
the SIGIN input
PC1
VCO adjusts to fo with φDEMOUT =90° and VVCOIN = 1/2 VCC (see Fig.6).
PC2
VCO adjusts to fo with φDEMOUT = 360° and VVCOIN = min. (see Fig.8).
PC3
VCO adjusts to fo with φDEMOUT = 360° and VVCOIN = min. (see Fig.10).
SUBJECT
PHASE
COMPARATOR
DESIGN CONSIDERATIONS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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74HC4046AN 功能描述:鎖相環(huán) - PLL PHASE LOCKED LOOP W/VCO 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
74HC4046AN,652 功能描述:鎖相環(huán) - PLL PHASE LOCKED LOOP 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
74HC4046AN652 制造商:NXP Semiconductors 功能描述:IC PHASE LOCKED LOOP (PLL) VCO 21MHZ
74HC4046APW 功能描述:鎖相環(huán) - PLL PHASE LOCKED LOOP W/VCO 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
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