參數(shù)資料
型號： LT1991ACMS
廠商： Linear Integrated Systems
英文描述： Precision, 100UA Gain Selectable Amplifier
中文描述： 精密，100uA的可選增益放大器
文件頁數(shù)： 18/24頁
文件大?。?/td> 311K
代理商： LT1991ACMS
LT1991
18
1991fb
Figure 12. Another Method of Selecting Difference Gain Is “Cross-Coupling.”
The Additional Method Means the LT1991 Provides All Integer Gains from 1 to 13
Figure 13. Integer Gain Difference
Amplifiers Using Cross-Coupling
Difference Amplifier: Additional Integer Gains Using
Cross-Coupling
Figure 12 shows the basic difference amplifier as well as
the LT1991 in a difference gain of 3. 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 3 to 2. Using this method, additional
integer gains are achievable, as shown in Table 5 below, so
that all integer gains from 1 to 13 are achieved with the
LT1991. Note that the equations can be written by inspec-
tion from the V
IN+
connections, and that the V
IN–
connec-
tions are simply the opposite (swap P for M and M for P).
Noise gain, bandwidth, and input impedance specifica-
tions 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
Noise –3dB BW
R
IN+
Typ k
Typ k
281
97
122
121
248
242
R
IN–
Gain
2
5
6*
7
8
11 P9, P3, M1 M9, M3, P1 9 + 3 – 1
V
IN+
P3, M1
P9, M3, M1 M9, P3, P1 9 – 3 – 1
P9, M3
M9, P3
P9, P1, M3 M9, M1, P3 9 + 1 – 3
P9, M1
M9, P1
V
IN–
M3, P1
Equation Gain
3 – 1
kHz
70
32
35
32
38
32
5
141
49
49
44
50
37
14
13
14
11
14
9 – 3
9 – 1
*Gain of 6 is better implemented as shown previously, but is included here for completeness.
APPLICATIOU
W
U
U
–
+
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
–
+
1991 F10
50k
150k
450k
50k
150k
450k
450k
450k
8
6
5
9
10
1
2
3
LT1991
CLASSICAL DIFFERENCE AMPLIFIER
CLASSICAL DIFFERENCE AMPLIFIER IMPLEMENTED
WITH LT1991. R
F
= 450k, R
G
= 150k, GAIN = 3.
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 P3 AND M1 GIVES +3 –1 = 2.
CONNECTIONS TO V
IN
–
ARE SYMMETRIC: M3 AND P1.
R
F
CROSS-
COUPLING
M9
M3
M1
P1
P3
P9
4pF
4pF
1991 F13
V
S–
V
S
+
V
S–
V
S
+
V
S–
V
S
+
V
S–
V
S
+
M9
M3
M1
P1
P3
P9
OUT
V
CC
V
OUT
V
EE
REF
LT1991
8
9
10
1
2
3
7
6
5
4
M9
M3
M1
P1
P3
P9
OUT
V
CC
V
OUT
V
EE
REF
LT1991
8
9
10
1
2
3
7
6
5
4
M9
M3
M1
P1
P3
P9
OUT
V
CC
V
OUT
V
EE
REF
LT1991
8
9
10
1
2
3
7
6
5
4
M9
M3
M1
P1
P3
P9
OUT
V
CC
V
OUT
V
EE
REF
LT1991
8
9
10
1
2
3
7
6
5
4
GAIN = 2
GAIN = 5
GAIN = 7
GAIN = 8
GAIN = 11
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
IN
+
V
IN
–
V
S–
V
S
+
M9
M3
M1
P1
P3
P9
OUT
V
CC
V
OUT
V
EE
REF
LT1991
8
9
10
1
2
3
7
6
5
4
V
IN
+
V
IN
–
相關(guān)PDF資料
PDF描述
LT1991AIDD Precision, 100UA Gain Selectable Amplifier
LT1991AIMS Precision, 100UA Gain Selectable Amplifier
LT1991CMS Precision, 100UA Gain Selectable Amplifier
LT1991IMS Precision, 100UA Gain Selectable Amplifier
LT1991 nullPrecision, 100UA Gain Selectable Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1991ACMS#PBF 功能描述:IC AMP PREC GAIN SELECT 10-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:RF/IF 差分 電路數(shù):1 輸出類型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤，CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:551 (CN2011-ZH PDF) 其它名稱:ADL5561ACPZ-R7CT
LT1991ACMS#TR 功能描述:IC AMP PREC GAIN SELECT 10MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1991ACMS#TRPBF 功能描述:IC AMP PREC GAIN SELECT 10MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(yīng)商設(shè)備封裝:10-MSOP 包裝:管件
LT1991ACMS-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision, 100μA Gain Selectable Amplifi er
LT1991ACMS-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Precision, 100μA Gain Selectable Amplifi er
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*