差动放大器

差动放大器是一种特殊用途放大器,设计用于测量差分信号,也称为减法器。差动放大器能够移除干扰共模信号,采用的方法称为共模抑制(CMR),这是它的一项主要功能。与大多数类型的放大器不同,差动放大器通常能够测量超出供电轨的电压,适合存在较大直流或交流共模电压的应用。ADI公司提供一系列差动放大器,为实现低失真、低功耗或高电压性能进行了优化。
产品选型表

差动放大器

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SortOrderPart## of AmpsCommon Mode In
(min)
(V)
Common Mode In
(max)
(V)
Input Beyond SupplyGain
(min)
(V/V)
Gain
(max)
(V/V)
BW - low gain
(typ)
(Hz)
Slew Rate
(typ)
(V/us)
Iq/Amp
(max)
(A)
Vs span
(min)
(V)
Vs span
(max)
(V)
Price (1000+)
($ US)
1LT1997-2 1 -255 255 Yes 0.1 0.25 1M 750m 400µ 3.3 50 $3.14 (LT1997IMS-2#PBF)
2LT6376 1 -230 230 Yes 10 10 160k 4.1 400µ 3.3 50 $3.20 (LT6376IMS#PBF)
3LT1990-10 1 -250 250 No 10 10 100k 400m 180µ 2.4 36 $1.62 (LT1990IMS8-10#PBF)
4LT1997-3 1 -160 160 Yes -13 14 1.1M 750m 400µ 3.3 50 $3.14 (LT1997IMS-3#PBF)
5LT6375 1 -270 270 Yes 1 1 375k 2.4 400µ 3.3 50 $2.95 (LT6375IMS#PBF)
6AD8479 1 -600 600 Yes 1 1 130k 7.5 650µ 5 36 $2.81 (AD8479ARZ)
7ADA4830-2 2 -10 9.5 Yes 0.5 0.5 84M 300 10m 2.9 5.5 $0.85 (ADA4830-2BCPZ-R7)
8ADA4830-1Reference Circuit Available 1 -10 9.5 Yes 0.5 0.5 84M 300 10m 2.9 5.5 $0.61 (ADA4830-1BCPZ-R7)
9AD8208 1 -2 45 Yes 20 20 70k 1 3m 4.5 5.5 $1.67 (AD8208WBRMZ)
10AD8279 2 -45.3 40.5 Yes 0.5 2 1M 1.3 350µ 2 36 $1.60 (AD8279ARZ)
11AD8209 1 -2 45 Yes 14 14 80k 1 3m 4.5 5.5 $1.67 (AD8209WBRMZ)
12AD8278 1 -45.3 40.5 Yes 0.5 2 1M 1.4 200µ 2 36 $0.95 (AD8278ARMZ)
13AD8277 2 -30.2 27 Yes 1 1 550k 1.1 200µ 2 36 $1.60 (AD8277ARZ)
14AD8276Reference Circuit Available 1 -30.2 27 Yes 1 1 550k 1.1 200µ 2 36 $0.95 (AD8276ARMZ)
15AD8271Reference Circuit Available 1 -15.4 15.4 Slightly 0.5 2 20M 30 2.6m 5 36 $1.25 (AD8271ARMZ)
16AD8275Reference Circuit Available 1 -12.3 12 Yes 0.2 0.2 15M 25 2.3m 3.3 15 $1.60 (AD8275ARMZ)
17AD8274Reference Circuit Available 1 -40.5 40.5 Yes 0.5 2 20M- 2.6m 5 36 $1.05 (AD8274ARMZ)
18AD8273 2 -40.5 40.5 Yes 0.5 3 20M 20 2.5m 5 36 $1.60 (AD8273ARZ)
19AD8270 2 -15.4 15.4 Slightly 0.5 2 20M 30 2.5m 5 36 $1.91 (AD8270ACPZ-R7)
20LT1996 1 -60 60 Yes 9 117 560k 120m 110µ 2.7 36 $1.39 (LT1996CMS#PBF)
21LT1995 1 -15 15 Slightly 1 7 32M 1k 8.5m 5 30 $1.89 (LT1995CMS#PBF)
22LT1991 1 -18 18 Yes 1 13 560k 120m 110µ 2.4 40 $1.39 (LT1991CMS#PBF)
23LT1990 1 -250 250 Yes 1 10 100k 550m 180µ 2.4 36 $1.35 (LT1990CS8#PBF)
24AD628Reference Circuit Available 1 -120 120 Yes 0.1 100 600k 300m 1.6m 4.5 36 $2.00 (AD628ARMZ)
25AD629Reference Circuit Available 1 -270 270 Yes 1 1 500k 2.1 1m 5 36 $3.19 (AD629ARZ)
26AD626 1 -24 24 Yes 10 100 100k 220m 2m 2.4 10 $3.77 (AD626ARZ)
27AMP03 1 -20 20 Yes 1 1 3M 9.5 3.5m 10 36 $3.10 (AMP03GSZ)