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參數資料
| 型號： | THS1040CDW |
| 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： | 19/36頁 |
| 文件大小： | 751K |
| 代理商： | THS1040CDW |
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THS1040
SLAS290C OCTOBER 2001 REVISED OCTOBER 2004
26
www.ti.com
APPLICATION INFORMATION
driving the VREF pin (continued)
Note that the maximum current may be up to 30% higher. The user should ensure that VREF is driven from a
low noise, low drift source, well decoupled to analog ground and capable of driving the maximum IREF.
driving REFT and REFB (external ADC references, MODE = AGND)
AVDD
AGND
AVDD
AGND
2 k
REFT
REFB
To ADC Core
Figure 36. Equivalent Circuit of REFT and REFB Inputs
reference decoupling
VREF pin
When the on-chip reference generator is enabled, the VREF pin should be decoupled to the circuit board’s
analog ground plane close to the THS1040 AGND pin via a 1-
F capacitor and a 0.1-F ceramic capacitor.
REFT and REFB pins
In any mode of operation, the REFT and REFB pins should be decoupled as shown in Figure 37. Use short
board traces between the THS1040 and the capacitors to minimize parasitic inductance.
THS1040
REFT
REFB
0.1
F
10
F
0.1
F
0.1
F
Figure 37. Recommended Decoupling for the ADC Reference Pins REFT and REFB
BIASREF pin
When using the on-chip BIASREF source, the BIASREF pin should be decoupled to the circuit board’s analog
ground plane close to the THS1040 AGND pin via a 1-
F capacitor and a 0.1-F ceramic capacitor.
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| THS1040IPWG4 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| THS1040CPWG4 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
相關代理商/技術參數 |
參數描述 |
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| THS1040CDWG4 | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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 |
| THS1040CDWR | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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 |
| THS1040CDWRG4 | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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 |
| THS1040CPW | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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 |
| THS1040CPWG4 | 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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 |
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