- 您現在的位置：買賣IC網 > PDF目錄98218 > THS1041IDWG4 (TEXAS INSTRUMENTS INC) 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 PDF資料下載
參數資料
| 型號： | THS1041IDWG4 |
| 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： | 8/41頁 |
| 文件大小： | 810K |
| 代理商： | THS1041IDWG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第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
THS1041
SLAS289C OCTOBER 2001 REVISED OCTOBER 2004
16
www.ti.com
PRINCIPLES OF OPERATION
sample-and-hold
Differential input signal sources can be connected directly to the AIN+ and AIN pins using either dc- or
ac-coupling.
For single-ended sources, the signal can be dc- or ac-coupled to one of AIN+ or AIN, and a suitable reference
voltage (usually the midscale voltage, see operating configuration examples) must be applied to the other pin.
Note that connecting the signal to AIN results in it being inverted during sampling.
The sample and hold differential output voltage VP = VP+ VP is given by
VP = (AIN+) (AIN)
A clamp is available for dc restoration of ac-coupled single-ended inputs (see clamp operation).
programmable gain amplifier
VP is amplified by the PGA and fed to the ADC as a voltage VQ = VQ+ VQ where
VQ = Gain
× VP = Gain × [(AIN+) (AIN)]
analog-to-digital converter
VQ is digitized by the ADC, using the voltages at pins REFT and REFB to set the ADC zero-scale (code 0) and
full-scale (code 1023) input voltages.
VQ (ZS) = (REFT REFB)
VQ (FS) = (REFT REFB)
Any inputs at AIN+ and AIN that give VQ voltages less than VQ(ZS) or greater than VQ(FS) lie outside the
ADC’s conversion range and attempts to convert such voltages are signalled by driving pin OVR high when the
conversion result is output. VQ voltages less than VQ(ZS) digitize to give ADC output code 0, and VQ voltages
greater than VQ(FS) give ADC output code 1023.
complete system and system input range
Combining the above equations to find the input voltages [(AIN+) (AIN)] that correspond to the limits of the
ADC’s valid input range gives:
(REFB
* REFT)
Gain
v [(AIN)) * (AIN*)] v
(REFT
* REFB)
Gain
For both single-ended and differential inputs, the ADC can thus handle signals with a peak-to-peak input range
[(AIN+) (AIN)] of:
pkpk input range
+ 2
(REFT
* REFB)
Gain
[(AIN+) (AIN)]
The next sections describe the options available to the user for setting the REFT and REFB voltages to obtain
the desired input range and performance in their THS1041 applications.
(1)
(2)
(3)
(4)
(5)
(6)
相關PDF資料 |
PDF描述 |
|---|---|
| THS1041IPWR | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1041IPWG4 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1050CPHP | 1-CH 10-BIT DELTA-SIGMA ADC, PARALLEL ACCESS, PQFP48 |
| THS1050IPHP | 1-CH 10-BIT DELTA-SIGMA ADC, PARALLEL ACCESS, PQFP48 |
| THS1050C | 1-CH 10-BIT DELTA-SIGMA ADC, PARALLEL ACCESS, PQFP48 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| THS1041IDWR | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IDWRG4 | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IPW | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IPWG4 | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IPWR | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
發布緊急采購，3分鐘左右您將得到回復。