參數(shù)資料
型號： ADS8517IDW
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO28
封裝： GREEN, PLASTIC, SOIC-28
文件頁數(shù)： 19/38頁
文件大?。?/td> 948K
代理商： ADS8517IDW
POWER-DOWN
PWRD
REFD
SLAS527A – SEPTEMBER 2008 – REVISED JUNE 2009 ................................................................................................................................................. www.ti.com
The ADS8517 has analog power-down and reference power-down capabilities via PWRD (pin 25) and REFD (pin
26), respectively. PWRD and REFD high powers down all analog circuitry, maintaining data from the previous
conversion in the internal registers, provided that the data have not already been shifted out through the serial
port. Typical power consumption in this mode is 50
W. Power recovery is typically 1 ms, using a 2.2-F
capacitor connected to CAP. Figure 42 shows power-down to power-up recovery time relative to the capacitor
value on CAP. With +5 V applied to VDIG, the digital circuitry of the ADS8517 remains active at all times,
regardless of PWRD and REFD states.
PWRD high powers down all of the analog circuitry except for the reference. Data from the previous conversion
are maintained in the internal registers and can still be read. With PWRD high, a convert command yields
meaningless data.
REFD high powers down the internal 2.5-V reference. All other analog circuitry, including the reference buffer, is
active. REFD should be high when using an external reference to minimize power consumption and the loading
effects on the external reference. See Figure 41 for the characteristic impedance of the reference buffer input for
both REFD high and low. The internal reference consumes approximately 5 mW.
26
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): ADS8517
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8517IDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16B,5V,125KSPS,ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8517IDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low Power 16-Bit 200 kSPS ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8517IDWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16B,5V,125KSPS,ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8517IPW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Lo Pwr 16B 200kSPS +/-10V Bip InSAR ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS8517IPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Lo Pwr 16B 200kSPS +/-10V Bip InSAR ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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