參數(shù)資料
型號： LM98640W-MPR
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, CQFP68
封裝： CERAMIC, QFP-68
文件頁數(shù)： 4/50頁
文件大?。?/td> 1688K
代理商： LM98640W-MPR
Symbol
Parameter
Conditions
Notes
Typical
Min
Max
Units
Sub-
groups
Coarse Analog Offset DAC Specifications
Resolution
±8
Bits
Offset Adjustment Range
Referred to AFE Input
CDS Gain = 1x
Minimum DAC Code = 0x000
-262
-264
-251
mV
1, 2, 3
Maximum DAC Code = 0x1FF
263
251
266
Offset Adjustment Range
Referred to AFE Input
CDS Gain = 2x
Minimum DAC Code = 0x000
-131
-132
-126
mV
1, 2, 3
Maximum DAC Code = 0x1FF
131
126
133
Offset Adjustment Range
Referred to AFE Output
Minimum DAC Code = 0x000
-2146
-2162
-2058
LSB
1, 2, 3
Maximum DAC Code = 0x1FF
2154
2058
2176
DAC Step Size
CDS Gain = 1x
Input Referred
1
mV
DAC Step Size
CDS Gain = 1x
Output Referred
8
LSB
DNL
Differential Non-Linearity
CDS Gain = 1x or 2x 40MHz
±0.97
-1.1
1.1
LSB
1, 2, 3
INL
Integral Non-Linearity
CDS Gain = 1x or 2x 40MHz
±1.5
-2.8
2.80
LSB
1, 2, 3
Fine Analog Offset DAC Specifications
Resolution
±8
Bits
Offset Adjustment Range
Referred to AFE Input
CDS Gain = 1x
Minimum DAC Code = 0x000
-4.6
-5.9
-3.1
mV
1, 2, 3
Maximum DAC Code = 0x1FF
5.3
4.3
6.8
Offset Adjustment Range
Referred to AFE Input
CDS Gain = 2x
Minimum DAC Code = 0x000
-2.3
-2.9
-1.5
mV
1, 2, 3
Maximum DAC Code = 0x1FF
2.6
2.1
3.4
Offset Adjustment Range
Referred to AFE Output
Minimum DAC Code = 0x000
-38
-48
-25
LSB
1, 2, 3
Maximum DAC Code = 0x1FF
43
35
56
DAC Step Size
CDS Gain = 1x
Input Referred
20
uV
DAC Step Size
CDS Gain = 1x
Output Referred
0.16
LSB
DNL
Differential Non-Linearity
±1
LSB
INL
Integral Non-Linearity
±2.2
LSB
PGA Specifications
Gain Resolution
8
Bits
1, 2, 3
Monotonicity
Maximum Gain
CDS Gain = 1x
8.3
7.92
8.78
V/V
1, 2, 3
CDS Gain = 1x
18.4
17.99
18.88
dB
1, 2, 3
Minimum Gain
CDS Gain = 1x
0.64
0.62
0.66
V/V
1, 2, 3
CDS Gain = 1x
-3.8
-4.15
-3.54
dB
1, 2, 3
PGA Function
Gain (V/V) = (180/(277-PGA Code))
Gain (dB) = 20LOG10(180/(277-PGA Code))
Channel Matching
Minimum PGA Gain
99.0
95.2
%
1, 2
99.0
94.0
%
3
Maximum PGA Gain
99.0
95.2
%
1, 2
99.0
94.0
%
3
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LM98640QML
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