- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98217 > THS1031CDWRG4 (TEXAS INSTRUMENTS INC) 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 PDF資料下載
參數(shù)資料
| 型號： | THS1031CDWRG4 |
| 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(shù)： | 24/42頁 |
| 文件大小： | 730K |
| 代理商： | THS1031CDWRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁
THS1031
3-V TO 5.5-V, 10-BIT, 30 MSPS
CMOS ANALOG-TO-DIGITAL CONVERTER
SLAS242E – NOVEMBER 1999 – REVISED MARCH 2002
30
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
details
The above value for RAIN is derived by noting that the average AIN voltage must equal the bias voltage supplied
by the ac coupling network. The average value of VLAST in equation 13 is thus a constant voltage
VLAST = V(AIN bias) – VM
For an input voltage Vin at the AIN pin,
Qin = (VIN – VLAST) × CS
Provided that f (–3 dB) is much lower than fclk, a constant current flowing over the clock period can approximate
the input charging pulse
IIN
= Qin/tclk
= Qin
× fclk
= (Vin – VLAST) × CS × fclk
The ac input resistance RAIN is then
RAIN = dIin/dVin
= 1 / (dVin / dIin)
= 1 / (CS x fclk)
driving the VREF pin (differential mode)
Figure 35 shows the equivalent load on the VREF pin when driving the internal reference buffer via this pin
(MODE = AVDD/2 and REFSENSE = AVDD).
AVDD
AGND
AVDD + VREF/4
VREF
RIN
14 k
REFSENSE = AVDD,
Mode =
_
+
44
AVDD
2
Figure 35. Equivalent Circuit of VREF
The current flowing into IIN is given by
I
IN +
(3
VREF
* AV
DD
)
(4
R
IN
)
Note that the actual IIN may differ from this value by up to 50% due to device-to-device processing variations
and allowing for operating temperature variations.
The user should ensure that VREF is driven from a low noise, low drift source, well-decoupled to analog ground
and capable of driving IIN.
(13)
(14)
(15)
(16)
(17)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| THS1031IDWRG4 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1031CDWR | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1031IPW | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1031IPWG4 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1031IPWR | 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 |
|---|---|
| THS1031CPW | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10bit 30MSPS 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 |
| THS1031CPWG4 | 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 |
| THS1031CPWR | 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 |
| 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 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。