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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: 28/48頁
文件大小: 1072K
代理商: TLC2558IPWR
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
34
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
power down calculations
i(AVERAGE) = (fS/fSMAX) × i(ON) + (1–fS/fSMAX) × i(OFF)
CASE 1: If VDD = 3.3 V, auto power down, and an external reference is used:
f
S +
10
kHz
f
SMAX +
200
kHz
i (ON)
+X 1 mA operating current and i(OFF) +X 1 mA auto power-down current
so
i (AVERAGE)
+ 0.05
1000
mA ) 0.95
1
mA + 51 mA
CASE 2: Now if software power down is used, another cycle is needed to shut it down.
f
S +
20
kHz
f
SMAX +
200
kHz
i (ON)
+X 1 mA operating current and i(OFF) +X 1 mA power-down current
so
i (AVERAGE)
+ 0.1
1000
mA ) 0.9
1
mA + 101 mA
In reality this will be less since the second conversion never happened. It is only the additional cycle to shut down
the ADC.
相關PDF資料
PDF描述
TLC2555CDGKG4 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC2555IDGKRG4 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC2552CDGKRG4 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC2555CDGKRG4 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLC2552IDGKRG4 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
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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