參數(shù)資料
型號： LT1996IDD
廠商： LINEAR TECHNOLOGY CORP
元件分類： 運動控制電子
英文描述： Precision, 100uA Gain Selectable Amplifier
中文描述： OP-AMP, 250 uV OFFSET-MAX, 0.56 MHz BAND WIDTH, PDSO10
封裝： 3 X 3 MM, PLASTIC, MO-229(WEED2), DFN-10
文件頁數(shù)： 18/24頁
文件大?。?/td> 352K
代理商： LT1996IDD
LT1996
18
1996f
Difference Amplifier: Additional Integer Gains Using
Cross-Coupling
Figure 12 shows the basic difference amplifier as well as
the LT1996 in a difference gain of 27. But notice the effect
of the additional dashed connections. This is referred to as
“cross-coupling” and has the effect of reducing the differ-
ential gain from 27 to 18. Using this method, additional
integer gains are achievable, as shown in Table 5 below.
Note that the equations can be written by inspection from
the V
IN+
connections, and that the V
IN–
connections are
simply the opposite (swap P for M and M for P). The
method is the same as for the LT1991, except that the
LT1996 applies a multiplier of 9. Noise gain, bandwidth,
and input impedance specifications for the various cases
are also tabulated, as these are not obvious. Schematics
are provided in Figure 13.
Table 5. Connections Using Cross-Coupling. Note That Equations
Can Be Written by Inspection of the V
IN+
Column
Gain
Gain
V
IN+
Equation Gain
18
P27, M9
M27, P9
27 – 9
45 P81, M27, M9 M81, P27, P9 81 – 27 – 9 117
54
P81, M27
M81, P27
81 – 27
63
P81, P9, M27 M81, M9, P27 81 + 9 – 27 117
72
P81, M9
M81, P9
81 – 9
99
P81, P27, M9 M81, M27, P9 81 + 27 – 9 117
Noise –3dB BW R
IN+
kHz
39
14
5
108
5
5
90
6
5
R
IN–
V
IN–
Typ k
Typ k
46
12
16
16
45
45
16
6
6
5
6
4
Figure 12. Another Method of Selecting Difference Gain Is “Cross-Coupling.”
The Additional Method Means the LT1996 Provides Extra Integer Gains
Figure 13. Integer Gain Difference
Amplifiers Using Cross-Coupling
APPLICATIU
W
U
U
1996 F13
V
S–
V
S
+
V
S–
V
S
+
V
S–
V
S
+
V
S–
V
S
+
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
OUT
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
OUT
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
OUT
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
OUT
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
GAIN = 18
GAIN = 54
GAIN = 63
GAIN = 72
GAIN = 99
V
IN
+
V
IN
–
V
S–
V
S
+
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
GAIN = 45
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
S–
V
S
+
M81
M27
M9
P9
P27
P81
OUT
V
CC
V
OUT
V
EE
REF
LT1996
8
9
10
1
2
3
7
6
5
4
V
IN
+
V
IN
–
4pF
4pF
–
+
R
F
R
G
R
G
V
IN
+
V
IN
+
V
IN
–
V
IN
–
V
OUT
V
OUT
V
= GAIN (V
IN
+
– V
IN
–
)
GAIN = R
F
/R
G
–
+
1996 F10
450k
450k
8
6
5
9
10
1
2
3
LT1996
CLASSICAL DIFFERENCE AMPLIFIER
CLASSICAL DIFFERENCE AMPLIFIER IMPLEMENTED
WITH LT1991. R
F
= 450k, R
G
= 16.7k, GAIN = 27.
GAIN CAN BE ADJUSTED BY "CROSS COUPLING." MAKING THE
DASHED CONNECTIONS REDUCE THE GAIN FROM 3 T0 2.
WHEN CROSS COUPLING, SEE WHAT IS CONNECTED TO THE
V
VOLTAGE. CONNECTING P27 AND M9 GIVES 27 – 9 = 18.
CONNECTIONS TO V
IN
–
ARE SYMMETRIC: M27 AND P9.
R
F
CROSS-
COUPLING
450k/81
450k/27
450k/9
450k/81
450k/27
450k/9
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相關代理商/技術參數(shù)
參數(shù)描述
LT1996IDD#PBF 功能描述:IC AMP PREC GAIN 10-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:10-MSOP 包裝:管件
LT1996IDD#TRPBF 功能描述:IC AMP PREC GAIN 10-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:帶卷 (TR)
LT1996IMS 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision, 100uA Gain Selectable Amplifier
LT1996IMS#PBF 功能描述:IC AMP PREC GAIN 10-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOIC 包裝:帶卷 (TR)
LT1996IMS#TRPBF 功能描述:IC AMP PREC GAIN 10-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOIC 包裝:帶卷 (TR)
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