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參數資料
| 型號： | THS1215IDW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | GREEN, PLASTIC, SOIC-28 |
| 文件頁數： | 5/22頁 |
| 文件大小： | 391K |
| 代理商： | THS1215IDW |
www.ti.com
THS1215
RS
VS+
VS
RS
RSW
CI
VCM
_
+
_
+
R
S t
1
2f
CLK
C
I
In(256)
–R
SW
VIN+
VIN
R1
R2
+
R1
R2
+
C1
C2
THS1215
AIN+
AIN
REFT
REFB
AVDD
2
THS1215
SLAS292A – MARCH 2001 – REVISED MARCH 2004
Figure 16. Simplified Equivalent Input Circuit
To maintain the frequency performance outlined in the specifications, the total source impedance should be
limited to the following equation with fCLK = 15 MHz, CI = 5 pF, RSW = 200 :
So, for applications running at a lower fCLK, the total source resistance can increase proportionally.
The analog input of the THS1215 is a differential input that can be configured in various ways depending on the
signal source and the required level of performance. A fully differential connection (see Figure 17) delivers the
best performance from the converter.
Figure 17. AC-Coupled Differential Input
The analog input can be dc-coupled (see Figure 18) as long as the inputs are within the analog input common
peak-to-peak voltage of 2 V, and the circuit in Figure 18 is used to interface it with the THS1215. Assume AVDD
13
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS1215IDWG4 | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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 |
| THS1215IDWR | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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 |
| THS1215IDWRG4 | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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 |
| THS1215IPW | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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 |
| THS1215IPWG4 | 功能描述:模數轉換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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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