LTC1068-200CG 데이터 시트보기 (PDF) - Linear Technology
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LTC1068-200CG Datasheet PDF : 30 Pages
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LTC1068 Series
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1068-25
Maximum Q vs Center Frequency
(Modes 1, 1b, 2)
55
50
A: VS = 3.3V, fCLK(MAX) = 1.2MHz
B: VS = 5V, fCLK(MAX) = 3.4MHz
45
C: VS = ±5V, fCLK(MAX) = 6.1MHz
40
(FOR MODE 2, R4 ≥ 10R2)
35
30
25
20
15
10
5
A
B
C
0
0 32 64 96 128 160 192 224
CENTER FREQUENCY, fO (kHz)
1068 G07
LTC1068-200 Center Frequency
Variation vs Clock Frequency
0.20
0.15
0.10
0.05
MODE 3
0
–0.05
–0.10
MODE 1
–0.15 VS = ±5V
Q = 5, REFERENCE
–0.20 CENTER FREQUENCY
WITH fCLK = 0.75MHz
–0.25
0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25
CLOCK FREQUENCY (MHz)
1068 G10
LTC1068/LTC1068-200
Noise vs Q
300
250
200
150
5V ±5V
100
3.3V
50
0
0 5 10 15 20 25 30 35 40
Q
1068 G13
8
LTC1068-25
Maximum Q vs Center Frequency
(Modes 2, 3)
55
50
A: VS = 3.3V, fCLK(MAX) = 1MHz
B: VS = 5V, fCLK(MAX) = 3MHz
45
C: VS = ±5V, fCLK(MAX) = 5MHz
40
(FOR MODE 2, R4 < 10R2)
35
30
25
20
15
10
5
A
B
C
0
0 32 64 96 128 160 192 224
FREQUENCY, fO (kHz)
1068 G08
LTC1068-50 Center Frequency
Variation vs Clock Frequency
0.4
MODE 1
0.3
MODE 3
0.2
0.1
0
VS = ±5V
–0.1 Q = 5, REFERENCE
CENTER FREQUENCY
WITH fCLK = 0.5MHz
–0.2
0.5 0.75 1.0 1.25 1.5 1.75 2.0
CLOCK FREQUENCY (MHz)
1068 G11
LTC1068-50 Noise vs Q
300
250
200
±5V
5V
150
3.3V
100
50
0
0 5 10 15 20 25 30 35 40
Q
1068 G14
LTC1068 Center Frequency
Variation vs Clock Frequency
1.2
VS = ±5V
1.0 Q = 5, REFERENCE
CENTER FREQUENCY
0.8 WITH fCLK = 0.75MHz
0.6
MODE 3
0.4
MODE 1
0.2
0
–0.2
–0.4
–0.6
0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25
CLOCK FREQUENCY (MHz)
1068 G09
LTC1068-25 Center Frequency
Variation vs Clock Frequency
1.8
VS = ±5V
Q = 5, REFERENCE
CENTER FREQUENCY
1.3 WITH fCLK = 0.5MHz
0.8
MODE 1
0.3
MODE 3
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
CLOCK FREQUENCY (MHz)
1068 G12
LTC1068-25 Noise vs Q
300
250
5V ±5V
200
3.3V
150
100
50
0
0 5 10 15 20 25 30 35 40
Q
1068 G15
1068fc
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