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參數資料
| 型號： | THS1209IDA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁數： | 7/33頁 |
| 文件大小： | 312K |
| 代理商： | THS1209IDA |
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THS1209
SLAS288B – JULY 2000 – REVISED DECEMBER 2002
www.ti.com
15
CONVERSION MODE
During conversion, the ADC operates with a free running external clock signal applied to the input CONV_CLK. With
every falling edge of the CONV_CLK signal a new converted value is available to the databus with the corresponding
read signal. The THS1209 offers up to two analog inputs to be selected. It is important to provide the channel
information to the system, this means to know which channel is available to the databus. The signal SYNC is disabled
for the selection of one analog input since this information is not required for one analog input.
Figure 25 shows the timing of the conversion when one analog input channel is selected. The maximum throughput
rate is 8 MSPS in this mode. There is a certain timing relationship required for the read signal with respect to the
conversion clock. This can be seen in Figure 26 and Table 2. A more detailed description of the timing is given in the
section timing and signal description of the THS1209.
Sample N
Channel 1
Sample N+2
Channel 1
Sample N+3
Channel 1
Sample N+1
Channel 1
Sample N+4
Channel 1
Sample N+5
Channel 1
Sample N+6
Channel 1
Data N–1
Channel 1
Data N
Channel 1
Data N+1
Channel 1
Data N+2
Channel 1
Data N–4
Channel 1
Data N–3
Channel 1
Data N–2
Channel 1
AIN
CONV_CLK
READ
READ is the logical combination from CS0, CS1 and RD
td(A)
td(pipe)
tw(CONV_CLKH)
tw(CONV_CLKL)
tc
tsu(CONV_CLKL-READL)
tsu(READH-CONV_CLKL)
Figure 25. Conversion Timing in 1-Channel Operation
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| THS1209IDAG4 | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| THS1215CDWRG4 | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS1209IDAG4 | 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 |
| THS121 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:HIGH STABILITY MOTOR CONTROL. DIGITAL TACHOMETER. CRANK SHAFT POSITION SENSOR. |
| THS1215 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V, 12-BIT, 15 MSPS, LOW-POWER ANALOG-TO-DIGITAL CONVERTER WITH POWER DOWN |
| THS1215CDW | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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 |
| THS1215CDWG4 | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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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