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參數(shù)資料
| 型號： | THS12082IDARG4 |
| 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(shù)： | 4/42頁 |
| 文件大小： | 840K |
| 代理商： | THS12082IDARG4 |
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THS12082
12-BIT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTERS
SLAS271B – MAY 2000 – REVISED DECEMBER 2002
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FIFO description
In order to facilitate an efficient connection to today’s processors, the THS12082 is supplied with a FIFO. This
integrated FIFO enables a problem-free processing of data. The FIFO is provided as a flexible circular buffer.
The circular buffer integrated in the THS12082 can store up to 16 conversion values. Therefore, the number
of interrupts to be served by a processor can be reduced significantly.
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
Read Pointer
Trigger Pointer
Write Pointer
Data in FIFO
Free
Figure 4. Circular Buffer
The converted data of the THS12082 is automatically written into the FIFO. To control the writing and reading
process, a write pointer, a read pointer, and a trigger pointer are used. The read pointer always shows the
location which will be read next. The write pointer indicates the location which contains the last written sample.
With a selection of multiple analog input channels, the converted values are written in a predefined sequence
to the circular buffer (autoscan mode). In this way, the channel information for the reading processor is
continually maintained.
The FIFO can be programmed through the control register of the ADC. The user has the ability to select a
specific trigger level from Table 13 in order to choose the configuration which best fits the application. The FIFO
provides the signal DATA_AV, which signals the processor to read the amount of data equal to the trigger level
selected in Table 13. The signal DATA_AV becomes active when the trigger condition is satisfied. The trigger
condition is satisfied when as many values as selected for the trigger level where written into the FIFO.
The signal DATA_AV could be connected to an interrupt input of a processor. In every interrupt service routine
call, the processor must read the amount of data equal to the trigger level from the ADC. The first data represents
the first channel according to the autoscan mode, which is shown in Table 10. The channel information is
therefore always maintained.
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| 5962-0053001HXX | DUAL 1-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, CQFP68 |
| 5962-0053001HXC | DUAL 1-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, CQFP68 |
| 5962-005300HXA | DUAL 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS1209 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12-BIT, 2 ANALOG INPUT, 8MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
| THS1209CDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12 Bit 8 MSPS Dual Ch 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 |
| THS1209CDAG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12 Bit 8 MSPS Dual Ch 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 |
| THS1209IDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12 Bit 8 MSPS Dual Ch 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 |
| THS1209IDAG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12 Bit 8 MSPS Dual Ch 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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