參數(shù)資料
型號(hào): 74HC4046A
廠商: NXP Semiconductors N.V.
英文描述: Phase-locked-loop with VCO
中文描述: 鎖相環(huán)與VCO的環(huán)
文件頁數(shù): 21/34頁
文件大小: 467K
代理商: 74HC4046A
1
2
P
P
P
7
Fig.18 Frequency stability of the VCO as a function of ambient temperature with supply voltage as a parameter.
without offset (R2 =
): (a) R1 = 3 k
; (b) R1 = 10 k
; (c) R1 = 300 k
.
with offset
(R1 =
): (a) R2 = 3 k
; (b) R2 = 10 k
; (c) R2 = 300 k
.
In (b), the frequency stability for R1 = R2 = 10 k
at 5 V is also given (curve A). This curve is set by the total VCO bias current, and is
not simply the addition of the two 10 k
stability curves. C1 = 100 pF; V
VCO IN
= 0.5 V
CC
.
To obtain optimum temperature stability, C1 must be as small as possible but larger than 100 pF.
book, halfpage
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MSB710
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VCC
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(a)
handbook, halfpage
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MSB711
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handbook, halfpage
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MSB712
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