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參數資料
型號: THS1030IDW
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, SOIC-28
文件頁數: 17/37頁
文件大小: 727K
代理商: THS1030IDW
THS1030
3V TO 5.5V, 10BIT, 30 MSPS
CMOS ANALOGTODIGITAL CONVERTER
SLAS243E NOVEMBER 1999 REVISED DECEMBER 2003
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
AIN input current and input load modeling
When CLK goes low, the source driving AIN must charge the total switched capacitance CS = CSAMPLE + CP2.
The total charge transferred depends on the voltage at AIN and is given by:
Q
CHARGING +
(AIN
* V
LAST
)
C
S
.
For a fixed voltage at AIN, so that AIN and VLAST do not change between samples, the maximum amount of
charge transfer occurs at AIN = FS (charging current flows out of THS1030) and AIN = FS+ (current flows into
THS1030). If AIN is held at the voltage FS+, VLAST = [(FS+) + VM]/2, giving a maximum transferred charge:
Q(FS)
+
(FS
)) * [(FS )) ) VM]
2
C
S +
[(FS
)) * VM]
C
S
2
+ (1 4 of the input voltage span)
C
S
If the input voltage changes between samples, then the maximum possible charge transfer is
Q(max)
+ 3
Q(FS)
which occurs for a full-scale input change (FS+ to FS or FS to FS+) between samples.
The charging current pulses can make the AIN source jump or ring, especially if the source is slightly inductive
at high frequencies. Inserting a small series resistor of 20
or less in the input path can damp source ringing
(see Figure 31). This resistor can be made larger than 20
if reduced input bandwidth or distortion performance
is acceptable.
AIN
R < 20
VS
Figure 28. Damping Source Ringing Using a Small Resistor
(7)
(8)
(9)
相關PDF資料
PDF描述
THS1030CPWR 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
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THS1030IPWLE 10-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
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THS1031CDWRG4 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
相關代理商/技術參數
參數描述
THS1030IDWG4 功能描述:模數轉換器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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
THS1030IDWR 功能描述:視頻模擬/數字化轉換器集成電路 10-Bit 30 MSPS 1-Ch Pin Comp RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel
THS1030IDWRG4 功能描述:視頻模擬/數字化轉換器集成電路 10-Bit 30 MSPS 1-Ch Pin Comp RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel
THS1030IPW 功能描述:模數轉換器 - ADC _ 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
THS1030IPWG4 功能描述:模數轉換器 - ADC 10-Bit 30 MSPS 1-Ch Pin Comp 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
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