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參數(shù)資料
| 型號： | LTC2413IGN#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 7/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC A/D CONV 24BIT MICRPWR 16SSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 6.8 |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 1mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個(gè)差分，雙極 |
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LTC2413
15
sn2413 2413fs
While operating with an external conversion clock of a
frequency fEOSC, the LTC2413 provides better than 110dB
normal mode rejection in a frequency range fEOSC/2560
±4%. The normal mode rejection as a function of the input
frequency deviation from fEOSC/2560 is shown in Figure 5.
Whenever an external clock is not present at the FO pin the
converter automatically activates its internal oscillator and
enters the Internal Conversion Clock mode. The LTC2413
operation will not be disturbed if the change of conversion
clock source occurs during the sleep state or during the
data output state while the converter uses an external
serial clock. If the change occurs during the conversion
state, the result of the conversion in progress may be
outside specifications but the following conversions will
not be affected. If the change occurs during the data output
state and the converter is in the Internal SCK mode, the
serial clock duty cycle may be affected but the serial data
stream will remain valid.
Table 3 summarizes the duration of each state and the
achievable output data rate as a function of FO.
SERIAL INTERFACE PINS
The LTC2413 transmits the conversion results and re-
ceives the start of conversion command through a syn-
chronous 3-wire interface. During the conversion and
sleep states, this interface can be used to assess the
converter status and during the data output state it is used
to read the conversion result.
Table 3. LTC2413 State Duration
State
Operating Mode
Duration
CONVERT
Internal Oscillator
FO = LOW
147ms, Output Data Rate
≤ 6.8 Readings/s
Simultaneous 50Hz/60Hz Rejection
External Oscillator
FO = External Oscillator
20510/fEOSCs, Output Data Rate ≤ fEOSC/20510 Readings/s
with Frequency fEOSC kHz
(fEOSC/2560 Rejection)
SLEEP
As Long As CS = HIGH Until CS = LOW and SCK
DATA OUTPUT
Internal Serial Clock
FO = LOW
As Long As CS = LOW But Not Longer Than 1.83ms
(Internal Oscillator)
(32 SCK cycles)
FO = External Oscillator with
As Long As CS = LOW But Not Longer Than 256/fEOSCms
Frequency fEOSC kHz
(32 SCK cycles)
External Serial Clock with
As Long As CS = LOW But Not Longer Than 32/fSCKms
Frequency fSCK kHz
(32 SCK cycles)
Figure 5. LTC2413 Normal Mode Rejection When
Using an External Oscillator of Frequency fEOSC
APPLICATIO S I FOR ATIO
WU
U
DIFFERENTIAL INPUT SIGNAL FREQUENCY
DEVIATION FROM NOTCH FREQUENCY fEOSC/2560(%)
–12
–8
–4
048
12
NORMAL
MODE
REJECTION
(dB)
2413 F05
–80
–85
–90
–95
–100
–105
–110
–115
–120
–125
–130
–135
–140
48
50
52
54
56
58
60
62
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
NORMAL
MODE
REECTION
RATIO
(dB)
2413 F04
–80
–90
–100
–120
–130
–140
Figure 4. LTC2413 Normal Mode Rejection
When Using an Internal Oscillator
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