參數(shù)資料
型號(hào): ADS7891
英文描述: CMOS Hex Schmitt Triggers 14-SO -55 to 125
中文描述: 3 MSPS的14位低功耗的SAR模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù): 13/26頁(yè)
文件大小: 329K
代理商: ADS7891
SLAS410 DECEMBER 2003
www.ti.com
13
TYPICAL CHARACTERISTICS
(1)
Figure 13
0
18
758
2664
1350
208
2
0
0
500
1000
1500
2000
2500
3000
8190 8191 8192 8193 8194 8195 8196 8197
Code
C
DC CODE SPREAD AT CENTER OF CODE
+VA = 5 V,
+VBD = 5 V,
Code = 8193,
Sample Rate = 3 MSPS,
Vref = 2.5 V,
TA = 25 C
Figure 14
12
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
12.9
13
40
20
0
20
40
60
80
E
EFFECTIVE NUMBER OF BITS
vs
FREE-AIR TEMPERATURE
TA Free-Air Temperature
°
C
fi = 100 kHz,
Sample Rate = 3 MSPS,
+VA = 5 V,
+VBD = 5 V,
Vref = 2.5 V
Figure 15
75
76
77
78
79
40
20
0
20
40
60
80
SIGNAL-TO-NOISE AND DISTORTION
vs
FREE-AIR TEMPERATURE
TA Free-Air Temperature
°
C
fi = 100 kHz,
Sample Rate = 3 MSPS,
+VA = 5 V,
+VBD = 5 V,
Vref = 2.5 V
S
Figure 16
75
75.5
76
76.5
77
77.5
78
78.5
79
40
20
0
20
40
60
80
SIGNAL-TO-NOISE RATIO
vs
FREE-AIR TEMPERATURE
S
TA Free-Air Temperature
°
C
fi = 100 kHz,
Sample Rate = 3 MSPS,
+VA = 5 V,
+VBD = 5 V,
Vref = 2.5 V
(1)At Vref = 2.5 V external, unless otherwise specified.
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