參數(shù)資料
型號(hào)： THS1030CPW
廠商： TEXAS INSTRUMENTS INC
元件分類： 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)： 20/37頁(yè)
文件大小： 727K
代理商： THS1030CPW
THS1030
3V TO 5.5V, 10BIT, 30 MSPS
CMOS ANALOGTODIGITAL CONVERTER
SLAS243E NOVEMBER 1999 REVISED DECEMBER 2003
27
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
driving the internal reference buffer (top/bottom mode)
Figure 31 shows the load present on the REFTS and REFBS pins in top/bottom mode due to the internal
reference buffer only. The sample and hold must also be driven via these pins, which adds additional load.
AVDD
AGND
AVDD + REFTS + REFBS
REFTS
REFBS
RIN
14 k
Mode = AVDD
_
+
4
Figure 31. Equivalent Circuit of Inputs to Internal Reference Buffer
Equations for the currents flowing into REFTS and REFBS are:
I
IN
TS
+
3
REFTS
* AV
DD *
REFBS
4
R
IN
I
IN
BS
+
3
REFBS
* AV
DD *
REFTS
4
R
IN
These currents must be provided by the sources on REFTS and REFBS in addition to the requirements of driving
the sample and hold. Tolerance on these currents are
±50%.
driving REFTS and REFBS
C1
7 pF
AVDD
AGND
CLK
C2
0.6 pF
CSAMPLE
VLAST
REFTS
REFBS
Mode = AVDD
Internal
Reference
Buffer
_
+
Figure 32. Equivalent Circuit of REFTS and REFBS Inputs
This is essentially a combination of driving the ADC internal reference buffer (if in top/bottom mode) and also
driving a switched capacitor load like AIN, but with the sampling capacitor and CP2 on each pin now being 0.6 pF
and about 0.6 pF respectively.
(12)
(13)
相關(guān)PDF資料
PDF描述
THS1030IPW 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS1030CPWG4 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
THS1030CPWR 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
THS1030CPWRG4 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
THS1030EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 THS1030 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
THS1030IDW 功能描述:模數(shù)轉(zhuǎn)換器 - 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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