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參數資料
型號: THS1031IPW
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: 13/41頁
文件大小: 728K
代理商: THS1031IPW
THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
onboard reference generator configuration
The onboard reference generator (ORG) can supply a supply-voltage-independent and temperature-
independent voltage on pin VREF.
External connections to REFSENSE control the ORG’s output to the VREF pin as shown in Table 2.
Table 2. Effect of REFSENSE Connection on VREF Value
REFSENSE CONNECTION
ORG OUTPUT TO VREF
REFER TO:
VREF pin
1 V
Figure 20
AGND
2 V
Figure 21
External divider junction
(1 + RA/RB)
Figure 22
AVDD
Open circuit
Figure 23
REFSENSE = AVDD powers the ORG down, saving power when the ORG function is not required.
If MODE = AVDD/2, the voltage on VREF determines the ADC reference voltages:
REFTF
+
AV
DD
2
) VREF
2
REFBF
+
AV
DD
2
* VREF
2
REFTF
* REFBF + VREF
_
+
_
+
VBG
Internal
Reference
Buffer
Mode =
REFSENSE
0.1
F 1 F
Tantalum
AGND
VREF = 1 V
AVDD
2
Figure 20. 1-V VREF Using ORG
(7)
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相關代理商/技術參數
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THS1031IPWG4 功能描述:模數轉換器 - ADC 10B 30 MSPS ADC Sgl Ch. Integ. Pgmable 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
THS1031IPWR 功能描述:模數轉換器 - ADC 10-Bit 30 MSPS 1-Ch 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
THS1031IPWRG4 功能描述:模數轉換器 - ADC 10-Bit 30 MSPS 1-Ch 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
THS1031SOIC 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.7 V . 5.5 V, 10-BIT, 30 MSPS CMOS ANALOG-TO-DIGITAL CONVERTER
THS1031TSSOP 制造商:TI 制造商全稱: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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