參數(shù)資料
型號: CLC949ACQ
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: ADC
英文描述: Very Low-Power, 12-Bit, 20MSPS Monolithic A/D Convertter
中文描述: 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 3/12頁
文件大?。?/td> 737K
代理商: CLC949ACQ
3
http://www.national.com
CLC949 Typical Performance Characteristics
(+V
DD
= + 5V, Med Bias, F
s
= 20MSPS: unless specified)
Output Spectrum 1MHz
O
Frequency (MHz)
0
-40
0
2
4
-120
-80
10
6
8
-20
-60
-100
Output Spectrum 9MHz
O
Frequency (MHz)
0
-40
0
2
4
-120
-80
10
6
8
-20
-60
-100
Output Spectrum 15MHz
O
Frequency (MHz)
0
-40
0
2
4
-120
-80
10
6
8
-20
-60
-100
SNR & SFDR vs. Input Amplitude 1MHz
S
Input Amplitude (dBFS)
80
60
-50
-30
-10
20
0
40
SNR
SFDR
10
-40
-20
0
SNR & SFDR vs. Input Amplitude 5MHz
S
Input Amplitude (dBFS)
80
60
-50
-30
-10
20
0
40
SNR
SFDR
10
-40
-20
0
SNR & SFDR vs. Input Amplitude 9MHz
S
Input Amplitude (dBFS)
80
60
-50
-30
-10
20
0
40
SNR
SFDR
10
-40
-20
0
SNR & SFDR vs. Input Frequency
S
Input Frequency (MHz)
80
100k
10M
100M
50
0
60
70
1M
F
S
= 20MHz
SFDR (dBc)
SNR (dB)
SNR vs. Sample Rate vs. Bias
S
Sample Rate (MSPS)
70
60
0.1
1.0
10
40
30
50
100
Low Bias
High Bias
Medium Bias
F
in
= 5MHz
SFDR vs. Sample Rate vs. Bias
S
Sample Rate (MSPS)
80
70
0.1
1.0
10
50
40
60
100
Low Bias
Medium Bias
High Bias
F
in
= 5MHz
Two Tone Intermodulation Distortion
O
Frequency (MHz)
0
-40
0
2
4
-120
-80
10
6
8
-20
-60
-100
Integral Non-Linearity
I
Output Code
2.5
1.5
0
1000
2000
-2.5
0.5
3000
4000
2
1
0
-0.5
-1
-1.5
-2
Differential Non-Linearity
D
Output Code
1.5
0.5
0
1000
2000
-1.5
-0.5
3000
4000
1
0
-1
Pulse Settling Response
A
Time (ns)
4000
0
100
150
1000
0
2000
200
3000
50
SFDR vs. Input Frequency
40
°
C
80
°
C
60
°
C
0
°
C
20
°
C
-20
°
C
S
Input Frequency (MHz)
80
76
72
68
64
60
1
10
100
I/O Timing (Convert CLK & Bit Skew)
p
(
)
Time (ns)
400
300
0
4
16
100
0
200
20
8
12
Output Data
Convert
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