Difference Amplifiers

A difference amplifier is a special purpose amplifier designed to measure differential signals, otherwise known as a subtractor. A key feature of a difference amplifier is its ability to remove unwanted common mode signals, known as common mode rejection (CMR). Unlike most types of amplifiers, difference amplifiers are typically able to measure voltages beyond the supply rails, and are used in applications where large dc or ac common-mode voltages are present. They are ideal for current and voltage monitoring. Analog Devices offers a range of difference amplifiers, optimized for low distortion, low power, or high voltage performance.
Product Selection Table

Difference Amplifiers

  Hold Shift Key for secondary sorting
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)