參數(shù)資料
型號(hào)： THS1031CPWR
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
文件頁數(shù)： 8/41頁
文件大?。?/td> 728K
代理商： THS1031CPWR
THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
full external reference mode (mode = AGND)
Sample
and
Hold
1
–1/2
ADC
Core
PGA
REFTF
REFBF
AIN+
REFTS
REFBS
Internal
Reference
Buffer
Figure 12. ADC Reference Generation, MODE = AGND
When MODE is connected to AGND, the internal reference buffer is powered down, its inputs and outputs
disconnected, and REFTS and REFBS internally connected to REFTF and REFBF respectively. These nodes
are connected by the user to external sources to provide the ADC reference voltages. The internal connections
are designed for use in kelvin connection mode (Figure 14). When using external reference mode as shown
in Figure 13, REFTS must be shorted to REFTF and REFBS must be shorted to REFBF externally. The mean
of REFTF and REFBF must be equal to AVDD/2 (see Figure 13).
AIN
REFTS
REFBS
REFTF
REFBF
REFSENSE
MODE
AVDD
+FS
–FS
+ [(FS+) – (FS–)]
×
0.1
F
10
F
0.1
F
0.1
F
AVDD
2
AVDD
2
DC SOURCE =
GAIN
2
– [(FS+) – (FS–)]
×
AVDD
2
DC SOURCE =
GAIN
2
Figure 13. Full External Reference Mode
It is also possible to use REFTS and REFBS as sense lines to drive the REFTF and REFBF lines (Kelvin mode)
to overcome any voltage drops within the system (see Figure 14).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS1031CPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch 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
THS1031EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 THS1031 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
THS1031IDW 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
THS1031IDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch 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
THS1031IDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 30 MSPS 1-Ch 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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