參數(shù)資料
型號(hào): ADA4941-1YRZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 11/25頁(yè)
文件大?。?/td> 0K
描述: IC DIFF ADC DVR 18BIT 8-SOIC
設(shè)計(jì)資源: Converting a Single-Ended Signal with AD7982 Differential PulSAR ADC (CN0032)
Converting a Single-Ended Signal with AD7984 Differential PulSAR ADC (CN0033)
標(biāo)準(zhǔn)包裝: 98
類型: ADC 驅(qū)動(dòng)器
應(yīng)用: 數(shù)據(jù)采集
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 管件
產(chǎn)品目錄頁(yè)面: 768 (CN2011-ZH PDF)
ADA4941-1
Rev. C | Page 18 of 24
Table 10. Output Voltage Noise, G = 2.4 Differential Amplifier Shown in Figure 48
Noise Source
Typical Value
VOP Contribution (nV√Hz)
VON Contribution (nV√Hz)
VO, dm Contribution (nV√Hz)
vn_A1
2.1 nV/√Hz
2.5
5
ip_A1
1 pA/√Hz
1
2
in_A1
1 pA/√Hz
1
2
√4 kTRF
4 nV/√Hz
4
8
√4 kTRG
9 nV/√Hz
1.8
3.6
√4 kTRS
3.6 nV/√Hz
4.4
8.8
vn_inverter
9.2 nV/√Hz
0
9.2
√RS_REF
0
ip_A2 × RS_REF
0
Totals
6.8
11.4
16.5
RF = 1.0 k, RG = 4.99 k, RS = 825 , RS_REF = 0 .
vn_inverter = noise contributions from A2 and its associated internal 1 k feedback resistors and 500 offset current balancing resistor.
Table 11. Output Voltage Noise, G = 2 Differential Amplifier Shown in Figure 49
Noise Source
Typical Value
VOP Contribution (nV√Hz)
VON Contribution (nV√Hz)
VO, dm Contribution (nV√Hz)
vn_A1
2.1 nV/√Hz
2.1
4.2
ip_A1
0
in_A1
0
√4 kTRF
0
√4 kTRG
0
√4 kTRS
0
vn_inverter
9.2 nV/√Hz
0
9.2
√RS_REF
0
ip_A2 × RS_REF
0
Totals
2.1
9.4
10
RF = 0 , RG = ∞, RS = 0 , RS_REF = 0 .
Table 12. Output Voltage Noise, G = 5 Differential Amplifier Shown in Figure 50
Noise Source
Typical Value
VOP Contribution (nV√Hz)
VON Contribution (nV√Hz)
VO, dm Contribution (nV√Hz)
vn_A1
2.1 nV/√Hz
5.25
10.5
ip_A1
1 pA/√Hz
1
2
in_A1
1 pA/√Hz
1
2
√4 kTRF
4 nV/√Hz
4
8
√4 kTRG
3.26 nV/√Hz
4.9
9.8
√4 kTRS
2.54 nV/√Hz
6.54
13.1
vn_inverter
9.2 nV/√Hz
0
9.2
√RS_REF
0
ip_A2 × RS_REF
0
Totals
10.7
14.1
23.1
RF = 1.02 k, RG = 665 , RS = 402 , RS_REF = 0 .
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