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參數(shù)資料
| 型號： | DDC118IRTCR |
| 英文描述： | Octal Current Input 20-Bit Analog-To-Digital Converter |
| 中文描述： | 八路電流輸入20位模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 23/30頁 |
| 文件大?。?/td> | 384K |
| 代理商： | DDC118IRTCR |
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SBAS325A JUNE 2004 REVISED JUNE 2005
www.ti.com
23
RETRIEVAL
BEFORE
CONV TOGGLES
(CONTINUOUS MODE)
Date retrieval before CONV toggles is the most
straightforward method. Data retrieval begins soon after
DVALID goes low and finishes before CONV toggles, as
shown in Figure 23. For best performance, data retrieval
must stop t
28
before CONV toggles. This method is most
appropriate for longer integration times. The maximum
time available for readback is T
INT
– t
27
– t
28
. For DCLK =
10MHz and CLK = 4MHz, the maximum number of
DDC118s that can be daisy-chained together (FORMAT =
high) is calculated by Equation 1:
T
INT
355.125 s
160
DCLK
NOTE: 128
τ
DCLK
is used for FORMAT = low.
where
τ
DCLK
is the period of the data clock. For example,
if T
INT
= 1000
μ
s and DCLK = 10MHz, the maximum
number of DDC118s (FORMAT = high) is shown in
Equation 2:
1000 s
355.125 s
(160)(100ns)
40.30
40DDC118s
(or 50 for FORMAT = low).
SYMBOL
DESCRIPTION
CLK = 4MHz, CLK_4X = 0
CLK = 4.8MHz, CLK_4X = 0
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
t27
t28
Cont Mode Data Ready
345.00
±
0.125
287.5
±
0.104
μ
s
Data Retrieval Shutdown Before Edge of CONV
10
10
μ
s
Figure 23. Readback
Before
CONV Toggles
(1)
(2)
…
…
…
…
Side B
Data
Side A
Data
T
INT
T
INT
t
27
t
28
CONV
DVALID
DCLK
DOUT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DDC118IRTCT | Octal Current Input 20-Bit Analog-To-Digital Converter |
| DDG-GJS-K1 | LED GaP |
| DDR-GJS-J2L1-1-I1 | LED GaP |
| DDR-GJS-K1 | LED GaP |
| DDR-GJS-K2 | LED GaP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DDC118IRTCRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Octal Current-Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| DDC118IRTCT | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Octal Current-Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| DDC118IRTCT | 制造商:Texas Instruments 功能描述:IC ADC 20BIT OCTAL 48-VQFN |
| DDC118IRTCT | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC ((NW)) |
| DDC118IRTCTG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Octal Current-Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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