CDP6872H 데이터 시트보기 (PDF) - Intersil
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CDP6872H Datasheet PDF : 15 Pages
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CDP6872
Simplified Block Diagram
VDD
1 (NOTE 1)
8
ENABLE
EXTERNAL CRYSTAL
OSC IN 2
3 OSC OUT
RF
VDD
VDD - 1.4V
VDD - 2.2V
VDD - 3.0V
VDD - 3.8V
IBIAS
VDD
S1a
S2
S3
S4
1 OF 4
DECODE
6
FREQ 1
VDD
7
FREQ 2
(NOTE 1)
(NOTE 1)
15pF
S1b
VRN
+
-
BUFFER AMP
15pF
VDD
S1c
VDD
VRN
VDD
LEVEL
SHIFTER
OUTPUT
5
BUFFER
4 VSS
VDD
P
IN
P
N
RF
VRN
OSCILLATOR
OUT
FREQUENCY SELECTION TRUTH TABLE
ENABLE
FREQ 1
FREQ 2
SWITCH
1
1
1
S1a, b, c
1
1
0
S2
1
0
1
S3
1
0
0
S4
0
X
X
X
NOTE:
1. Logic input pull-up resistors are constant current source of 0.4µA.
OUTPUT RANGE
10kHz - 100kHz
100kHz - 1MHz
1MHz - 5MHz
5MHz - 10MHz+
High Impedance
2
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