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參數資料
| 型號： | THS1207IDAR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁數： | 13/32頁 |
| 文件大?。?/td> | 317K |
| 代理商： | THS1207IDAR |
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THS1207
SLAS284A – AUGUST 2000 – REVISED DECEMBER 2002
www.ti.com
20
ANALOG INPUT CHANNEL SELECTION
The analog input channels of the THS1207 can be selected via bits 3 to 7 of control register 0. One channel
(single-ended or differential) is selected via bit 3 and bit 4 of control register 0. Bit 5 controls the selection
between single-ended and differential configuration. Bit 6 and bit 7 select the autoscan mode, if more than one
input channel is selected. Table 9 shows the possible selections.
Table 9. Analog Input Channel Configurations
BIT 7
SCAN
BIT 6
DIFF1
BIT 5
DIFF0
BIT 4
CHSEL1
BIT 3
CHSEL0
DESCRIPTION OF THE SELECTED INPUTS
0
Analog input AINP (single ended)
0
1
Analog input AINM (single ended)
0
1
0
Analog input BINP (single ended)
0
1
Analog input BINM (single ended)
0
1
0
Differential channel (AINP–AINM)
0
1
0
1
Differential channel (BINP–BINM)
1
0
1
Autoscan two single ended channels: AINP, AINM, AINP,
…
1
0
1
0
Autoscan three single ended channels: AINP, AINM, BINP, AINP,
…
1
0
1
Autoscan four single ended channels: AINP, AINM, BINP, BINM, AINP,
…
1
0
1
0
1
Autoscan one differential channel and one single ended channel AINP, (BINP–BINM),
AINP, (BINP–BINM),
…
1
0
1
0
Autoscan one differential channel and two single ended channel AINP, AINM, (BINP–
BINM), AINP,
…
1
0
1
Autoscan two differential channels (AINP–AINM), (BINP–BINM), (AINP–AINM),
…
0
1
0
Reserved
0
1
Reserved
1
0
Reserved
1
0
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
0
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
Reserved
Test Mode
The test mode of the ADC is selected via bit 8 and bit 9 of control register 0. The different selections are shown
in Table 10.
Table 10. Test Mode
BIT 9
TEST1
BIT 8
TEST0
OUTPUT RESULT
0
Normal mode
0
1
VREFP
1
0
((VREFM)+(VREFP))/2
1
VREFM
Three different options can be selected. This feature allows support testing of hardware connections between
the ADC and the processor.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS12082 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS |
| THS12082CDA | 功能描述:模數轉換器 - ADC 12bit 8 MSPS ADC RoHS:否 制造商:Texas Instruments 通道數量: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 |
| THS12082CDAG4 | 功能描述:模數轉換器 - ADC 12 Bit 8 MSPS Dual Ch RoHS:否 制造商:Texas Instruments 通道數量: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 |
| THS12082CDAR | 功能描述:模數轉換器 - ADC 12 Bit 8 MSPS Dual Ch RoHS:否 制造商:Texas Instruments 通道數量: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 |
| THS12082CDARG4 | 功能描述:模數轉換器 - ADC 12 Bit 8 MSPS Dual Ch RoHS:否 制造商:Texas Instruments 通道數量: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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