參數(shù)資料
型號: 74HC7046APW
廠商: NXP SEMICONDUCTORS
元件分類: PLL合成/DDS/VCOs
英文描述: PHASE LOCKED LOOP, PDSO16
封裝: PLASTIC, TSSOP
文件頁數(shù): 20/38頁
文件大?。?/td> 468K
代理商: 74HC7046APW
December 1990
27
Philips Semiconductors
Product specication
Phase-locked-loop with lock detector
74HC/HCT7046A
APPLICATION INFORMATION
This information is a guide for the approximation of values of external components to be used with the 74HC/HCT7046
in a phase-lock-loop system.
References should be made to Figs 27, 28 and 29 as indicated in the table.
Values of the selected components should be within the following ranges:
R1
between 3 k
and 300 k;
R2
between 3 k
and 300 k;
R1
+ R2 parallel value > 2.7 k;
C1
greater than 40 pF.
SUBJECT
PHASE
COMPARATOR
DESIGN CONSIDERATIONS
VCO frequency characteristic
VCO frequency
without extra
offset
PC1, PC2
With R2 =
∞ and R1 within the range 3 k< R1 < 300 k, the characteristics
of the VCO operation will be as shown in Fig. 23.
(Due to R1, C1 time constant a small offset remains when R2 =
∞.)
Fig. 23 Frequency characteristic of VCO operating without offset:
fo = centre frequency; 2fL = frequency lock range.
Selection of R1 and C1
PC1
Given fo, determine the values of R1 and C1 using Fig.27.
PC2
Given fmax and fo, determine the values of R1 and C1 using Fig.27,
use Fig.29 to obtain 2fL and then use this to calculate fmin.
相關PDF資料
PDF描述
74HCT7046ADB-T PHASE LOCKED LOOP, PDSO16
74HC7046APW-T PHASE LOCKED LOOP, PDSO16
74HCT7046ADB PHASE LOCKED LOOP, PDSO16
74HCT7046APW-T PHASE LOCKED LOOP, PDSO16
74HCT9046AP PHASE LOCKED LOOP, PDIP16
相關代理商/技術參數(shù)
參數(shù)描述
74HC7266D 功能描述:邏輯門 QUAD 2-INPUT EXCLSVE NOR GATE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量(輸入/輸出):2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel
74HC7266D,652 功能描述:邏輯門 QUAD 2-INPUT EXCLSVE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量(輸入/輸出):2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel
74HC7266D,653 功能描述:邏輯門 QUAD 2-INPUT EXCLSVE NOR GATE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量(輸入/輸出):2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel
74HC7266DB 功能描述:邏輯門 QUAD 2IN EX-NOR GATE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量(輸入/輸出):2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel
74HC7266DB,112 功能描述:邏輯門 QUAD 2IN EX-NOR GATE RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線路數(shù)量(輸入/輸出):2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel