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參數(shù)資料
型號(hào)： THS1030IPW
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： ADC
英文描述： 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
封裝： GREEN, PLASTIC, TSSOP-28
文件頁(yè)數(shù)： 5/37頁(yè)
文件大小： 727K
代理商： THS1030IPW
THS1030
3V TO 5.5V, 10BIT, 30 MSPS
CMOS ANALOGTODIGITAL CONVERTER
SLAS243E NOVEMBER 1999 REVISED DECEMBER 2003
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
sample and hold
The analog input signal AIN is applied to the AIN pin, either dc-coupled or ac-coupled.
The differential sample and hold processes AIN with respect to the voltages applied to the REFTS and REFBS
pins, to give a differential output VP+ VP = VP given by:
VP
+ A
IN *
VM
Where:
VM
+
(REFTS
) REFBS)
2
For single-ended input signals, VM is a constant voltage; usually the AIN mid-scale input voltage. However if
MODE = AVDD/2 then REFTS and REFBS can be connected together to operate with AIN as a complementary
pair of differential inputs (see Figures 16 and 17).
analog-to-digital converter
In all operating configurations, VP is digitized against ADC reference voltages REFTF and REFBF, full-scale
values of VP being given by:
VPFS
)+
) (REFTF * REFBF)
2
VPFS
*+
* (REFTF * REFBF)
2
VP voltages outside the range VPFS to VPFS+ lie outside the conversion range of the ADC. Attempts to
convert out-of-range inputs are signaled to the application by driving the OVR output pin high. VP voltages less
than VPFS give ADC output code 0. VP voltages greater than VPFS+ give output code 1023.
complete system
Combining the above equations, the analog full scale input voltages at AIN which give VPFS+ and VPFS at
the sample and hold output are:
A
IN +
FS
)+ VM )
(REFTF
* REFBF)
2
and
A
IN +
FS
*+ VM *
(REFTF
* REFBF)
2
The analog input span (voltage range) that lies within the ADC conversion range is:
Input span
+ [(FS )) * (FS *)] + (REFTF * REFBF)
The REFTF and REFBF voltage difference sets the device input range. The next sections describe in detail the
various methods available for setting voltages REFTF and REFBF to obtain the desired input span and ADC
performance.
(1)
(2)
(3)
(4)
(5)
相關(guān)PDF資料
PDF描述
THS1030IDWG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1030CDWR 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1030CPWRG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1030IPWR 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
THS1030CDWG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS1030IPWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
THS1030IPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
THS1030IPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
THS1030SOIC 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:2.7 V . 5.5 V, 10-BIT, 30 MSPS CMOS ANALOG-TO-DIGITAL CONVERTER
THS1030TSSOP 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:2.7 V . 5.5 V, 10-BIT, 30 MSPS CMOS ANALOG-TO-DIGITAL CONVERTER
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