參數(shù)資料
型號(hào)： DDC118IRTCT
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(yè)數(shù)： 20/30頁(yè)
文件大?。?/td> 384K
代理商： DDC118IRTCT
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SBAS325A JUNE 2004 REVISED JUNE 2005
www.ti.com
20
Changing Between Modes
Changing from the cont to ncont mode occurs whenever
T
INT
< t
6
. Figure 18 shows an example of this transition.
In this figure, the cont mode is entered when the integration
on side A is completed before the m/r/az cycle on side B
is complete. The DDC118 completes the measurement on
sides B and A during states 8 and 7 with the input signal
shorted to ground. Ncont integration begins with state 6.
Changing from the ncont to cont mode occurs when T
INT
is increased so that T
INT
is always
≥
t
6
, as shown in
Figure 19 (see also Figure 14 and Table 8, page 18). With
a longer T
INT
, the m/r/az cycle has enough time to finish
before the next integration begins and continuous
integration of the input signal is possible. For the special
case of the very first integration when changing to the cont
mode, T
INT
can be < t
6
. This is allowed because there is
no simultaneous
m/r/az cycle on the side B during state
3—there is no need to wait for it to finish before ending the
integration on side A.
CONV
8
7
4
5
Continuous
NonContinuous
5
6
5
State
Integration
Status
m/r/az
Status
mbsy
m/r/az B
m/r/az A
m/r/az B
m/r/az A
m/r/az B
Integrate A
Integrate B
Int A
Int A
Int B
Figure 18. Changing from Continuous Mode to Non-Continuous Mode
CONV
4
2
1
4
NonContinuous
Continuous
3
3
State
mbsy
m/r/az
Status
Integration
Status
m/r/az A
m/r/az B
m/r/az A
Int B
Int A
Integrate A
Integrate B
Figure 19. Changing from Non-Continuous Mode to Continuous Mode
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
DDC11XEVM-PDK 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 DDC11xEVM-PDK Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
DDC122LH 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:NPN PRE-BIASED SMALL SIGNAL SOT-563 DUAL SURFACE MOUNT TRANSISTOR
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