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參數(shù)資料
| 型號： | LTC2435-1 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 20-Bit No Latency ADCs with Differential Input and Differential Reference |
| 中文描述： | 20位無與差分輸入和差分ADC的參考延遲 |
| 文件頁數(shù)： | 17/40頁 |
| 文件大?。?/td> | 463K |
| 代理商： | LTC2435-1 |
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LTC2435/LTC2435-1
17
24351fa
APPLICATIU
W
U
U
Table 3a. LTC2435 State Duration
State
Operating Mode
CONVERT
Internal Oscillator
Duration
67ms, Output Data Rate
≤
15 Readings/s
80ms, Output Data Rate
≤
12.4 Readings/s
F
O
= LOW, (60Hz Rejection)
F
O
= HIGH, (50Hz Rejection)
F
O
= External Oscillator with Frequency 10278/f
EOSC
s, Output Data Rate
≤
f
EOSC
/10278 Readings/s
f
EOSC
kHz (f
EOSC
/2560 Rejection)
As Long As CS = HIGH
Internal Serial Clock F
O
= LOW/HIGH, (Internal Oscillator)
F
O
= External Oscillator with
Frequency f
EOSC
kHz
External Serial Clock with Frequency f
SCK
kHz
External Oscillator
SLEEP
DATA OUTPUT
As Long As CS = LOW But Not Longer Than 1.25ms (24 SCK cycles)
As Long As CS = LOW But Not Longer Than 192/f
EOSC
ms (24 SCK cycles)
As Long As CS = LOW But Not Longer Than 24/f
SCK
ms (24 SCK cycles)
INPUT FREQUENCY DEVIATION FROM NOTCH FREQUENCY (%)
–12
–8
–4
0
4
8
12
R
2435 F07a
–60
–70
–80
–90
–100
–110
–120
–130
–140
Table 3b. LTC2435-1 State Duration
State
Operating Mode
CONVERT
Internal Oscillator
Duration
73ms, Output Data Rate
≤
14 Readings/s
F
O
= LOW
Simultaneous 50Hz/60Hz Rejection
F
O
= External Oscillator with Frequency 10278/f
EOSC
s, Output Data Rate
≤
f
EOSC
/10278 Readings/s
f
EOSC
kHz (f
EOSC
/2560 Rejection)
As Long As CS = HIGH
Internal Serial Clock F
O
= LOW (Internal Oscillator)
F
O
= External Oscillator with
Frequency f
EOSC
kHz
External Serial Clock with Frequency f
SCK
kHz
External Oscillator
SLEEP
DATA OUTPUT
As Long As CS = LOW But Not Longer Than 1.4ms (24 SCK cycles)
As Long As CS = LOW But Not Longer Than 192/f
EOSC
ms (24 SCK cycles)
As Long As CS = LOW But Not Longer Than 24/f
SCK
ms (24 SCK cycles)
Figure 7c. LTC2435/LTC2435-1
Normal Mode Rejection When Using
an External Oscillator of Frequency
f
EOSC
with Running Averages
Figure 7b. LTC2435-1 Normal Mode
Rejection When Using an Internal
Oscillator with Running Averages
48
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
50
52
54
56
58
60
62
N
2435 F07b
–80
–90
–100
–100
–120
–130
–140
DIFFERENTIAL INPUT SIGNAL FREQUENCY
DEVIATION FROM NOTCH FREQUENCY f
EOSC
/2560(%)
–12
–8
–4
0
4
8
12
N
2435 F07c
–80
–85
–90
–95
–100
–105
–110
–115
–120
–125
–130
–135
–140
Figure 7a. LTC2435/LTC2435-1 Normal Mode
Rejection When Using an External Oscillator
of Frequency f
EOSC
without Running Averages
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