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參數(shù)資料
| 型號： | DDC112U/1K |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28 |
| 封裝： | GREEN, PLASTIC, SOIC-28 |
| 文件頁數(shù)： | 11/34頁 |
| 文件大小： | 776K |
| 代理商： | DDC112U/1K |
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DDC112
19
SBAS085B
www.ti.com
CONV
4
2
1
4
Non-Continuous
Continuous
33
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 18. Changing from Continuous Mode to Non-Continuous Mode.
FIGURE 19. Changing from Non-Continuous Mode to Continuous Mode.
CONV
87
45
Continuous
Non-Continuous
5
65
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 B
Changing Between Modes
Changing from the cont to ncont mode occurs whenever
TINT < t6. 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 DDC112 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 TINT is
increased so that TINT is always ≥ t6 (see Figure 14). With a
longer TINT, 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, TINT can be
< t6. 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.
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| DDC112UG4 | 功能描述:模數(shù)轉換器 - ADC Dual Current Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| DDC112UK | 功能描述:模數(shù)轉換器 - ADC Dual Current Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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| DDC112UK | 制造商:Texas Instruments 功能描述:20BIT ADC DUAL SMD SOIC28 112 |
| DDC112UK/1K | 功能描述:模數(shù)轉換器 - ADC Dual Current Input 20-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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