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参数资料
| 型号： | AD7609BSTZ-RL |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | ADC |
| 英文描述： | 8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP64 |
| 封装： | ROHS COMPLIANT, MS-026BCD, LQFP-64 |
| 文件页数： | 9/35页 |
| 文件大小： | 1737K |
| 代理商： | AD7609BSTZ-RL |
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Preliminary Technical Data
AD7609
Rev. PrD | Page 17 of 35
80
85
90
95
100
105
10
100
10k
100k
S
NR
(
d
B
s)
INPUT FREQUENCY (Hz)
NO OS
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
AVCC,VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±10V RANGE
09
76
0-
01
7
Figure 20. SNR vs. Input Frequency, ±10 V Range
80
85
90
95
100
105
10
100
10k
100k
S
NR
(
d
B
s)
INPUT FREQUENCY (Hz)
NO OS
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
AVCC,VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±5V RANGE
09
76
0-
01
8
Figure 21. SNR vs. Input Frequency, ±5 V Range
–120
–110
–100
–90
–80
–70
–60
110
TH
D
(
d
B
)
FREQUENCY (kHz)
100
±10V RANGE
AVCC,VDRIVE =5V
TA =25°C
fSAMPLE =200 kSPS
RSOURCE MATCHED
ON Vx + Vx– INPUTS
10k
5k
10
0
1.2k
500
09
76
0-
0
2
0
Figure 22. THD vs. Input Frequency for Various Source Impedances,
±10 V Range
–120
–110
–100
–90
–80
–70
–60
–50
–40
110
TH
D
(
d
B
)
FREQUENCY (kHz)
100
09
76
0-
0
1
9
±5V RANGE
AVCC,VDRIVE =5V
TA =25°C
fSAMPLE =200 kSPS
RSOURCE MATCHED
ON Vx + Vx– INPUTS
10k
5k
10
0
1.2k
500
Figure 23. THD vs. Input Frequency for Various Source Impedances,
±5 V Range
0
97
60
-0
23
80
85
90
95
100
105
110
NO OS OS × 2 OS × 4 OS × 8 OS × 16 OS × 32 OS × 64
DY
NAM
IC
RANG
E
(
d
B)
OVERSAMPLING RATIO
AVCC = VDRIVE = 5V
TA = 25°C
INTERNAL REFERENCE
fSAMPLE SCALES WITH OS RATIO
±10V RANGE
±5V RANGE
Figure 24. Bipolar Zero Code Error vs. Temperature
16
12
8
4
0
–4
–8
–12
–40
–25
–10
5
20
35
50
65
80
–16
BI
P
O
L
AR
Z
E
RO
C
O
D
E
RR
O
R
M
AT
CHI
NG
(
L
S
B)
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
5V RANGE
10V RANGE
09
76
0-
22
4
Figure 25. Bipolar Zero Code Error Matching Between Channels
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