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參數資料
| 型號： | TLC2558IPWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | GREEN, PLASTIC, TSSOP-20 |
| 文件頁數： | 29/48頁 |
| 文件大小： | 1072K |
| 代理商： | TLC2558IPWR |
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TLC2554, TLC2558
5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS220A –JUNE 1999
35
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
CASE 3: Now if the hardware power down is used.
f
S +
10
kHz
f
SMAX +
200
kHz
i (ON)
+X 1 mA operating current and i(OFF) +X 1 mA power-down current
so
i (AVERAGE)
+ 0.05
1000
mA ) 0.95
1
mA + 51 mA
difference between modes of conversion
The major difference between sweep mode (mode 10) and repeat sweep mode (mode 11) is that the sweep
sequence ends after the FIFO is filled up to the programmed threshold. The repeat sweep can either dump the
FIFO (by ignoring the FIFO content but simply reconfiguring the device) or read the FIFO and then repeat the
conversions on the the same sequence of the channel as before.
FIFO reads are expected after the FIFO is filled up to the threshold in each case. Mode 10 – the device allows
only FIFO read or CFR read or CFR write to be executed. Any conversion command is ignored. In the case of
mode 11, in addition to the above commands, conversion commands are also executed , i.e. the FIFO is cleared
and the sweep sequence is restarted.
Both single shot and repeat modes require selection of a channel after the device is configured for these modes.
Single shot mode does not use the FIFO, but repeat mode does. When the device is operating in repeat mode,
the FIFO can be dumped (by ignoring the FIFO content and simply reconfiguring the device) or the FIFO can
be read and then the conversions repeated on the same channel as before. However, the channel has to be
selected first before any conversion can be carried out. The devices can be programmed with the following
sequences for operating in the different modes that use a FIFO:
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TLC2558IPWRG4 | 功能描述:模數轉換器 - ADC 12-bit 400 KSPS 8-Ch Serial w/Powerdown 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 |
| TLC2558QDW | 制造商:Texas Instruments 功能描述:12-BIT, 400 KSPS ADC, 8-CH. SERIAL WITH POWERDOWN - Rail/Tube |
| TLC2558QDWR | 制造商:Texas Instruments 功能描述:12-BIT, 400 KSPS ADC, 8-CH. SERIAL WITH POWERDOWN - Tape and Reel |
| TLC2574EVM | 功能描述:數據轉換 IC 開發工具 TLC2574 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| TLC2574IDW | 功能描述:模數轉換器 - ADC Serial Out Low Power 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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