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ADS7864YB/2KG4 参数 Datasheet PDF下载

ADS7864YB/2KG4图片预览
型号: ADS7864YB/2KG4
PDF下载: 下载PDF文件 查看货源
内容描述: [6-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48, GREEN, PLASTIC, TQFP-48]
分类和应用: 转换器
文件页数/大小: 27 页 / 990 K
品牌: TI [ TEXAS INSTRUMENTS ]
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ADS7864  
www.ti.com  
SBAS141ASEPTEMBER 2000REVISED MARCH 2005  
+IN  
CM +VREF  
+VREF  
CM Voltage  
IN = CM Voltage  
VREF  
t
CM VREF  
Single−Ended Inputs  
+IN  
+VREF  
CM +1/2VREF  
CM Voltage  
VREF  
IN  
t
CM 1/2VREF  
Differential Inputs  
(IN+) (IN )  
, Common−Mode Voltage (Single−Ended Mode) = IN .  
NOTES: Common−Mode Voltage (Differential Mode) =  
2
The maximum differential voltage between +IN and IN of the ADS7864 is VREF. See Figures 21 and 22 for a further  
explanation of the common voltage range for single−ended and differential inputs.  
Figure 20. Using the ADS7864 in the Single-Ended and Differential Input Modes  
5
4
3
2
1
0
5
VCC = 5V  
4.7  
VCC = 5V  
4.1  
4
3
2
1
0
4.05  
2.7  
2.3  
Single−Ended Input  
Differential Input  
0.90  
0.9  
0.3  
1
1
1.2  
2.6  
2.5  
1.2  
2.6  
2.5  
1.0  
1.5  
2.0  
3.0  
1.0  
1.5  
2.0  
VREF (V)  
3.0  
VREF (V)  
Figure 21. Single-Ended Input: Common-Mode Voltage  
Range vs VREF  
Figure 22. Differential Input: Common-Mode  
Voltage Range vs VREF  
12