參數(shù)資料
型號: 74HC4046
廠商: ON SEMICONDUCTOR
英文描述: Phase-Locked Loop
中文描述: 鎖相環(huán)
文件頁數(shù): 24/34頁
文件大小: 467K
代理商: 74HC4046
1997 Nov 25
24
Philips Semiconductors
Product specification
Phase-locked-loop with VCO
74HC/HCT4046A
Fig.20 Definition of VCO frequency linearity:
V = 0.5 V over the V
CC
range:
for VCO linearity
f‘
0
f
--------------
f
2
+
2
=
linearity
f‘
----------------
f
0
f‘
0
100%
×
=
Fig.21 Frequency linearity as a function of R1, C1
and V
CC
: R2 =
and
V = 0.5 V.
Fig.22 Power dissipation
versus the value of R1:
C
L
= 50 pF;
R2 =
;
V
VCOIN
= 1/2 V
CC
;
T
amb
= 25
°
C.
C1 = 40 pF
- - - -C1 = 1
μ
F
Fig.23 Power dissipation
versus the value of R2:
C
L
= 50 pF;
R1 =
;
V
VCOIN
= GND = 0 V;
T
amb
= 25
°
C.
C1 = 40 pF
- - - - C1 = 1
μ
F
Fig.24 Typical dc power
dissipation of
demodulator sections
as a function of R
S
:
R1 = R2 =
;
T
amb
= 25
°
C;
V
VCOIN
= 1/2 V
CC
.
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