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

Difference Amplifiers

  Hold Shift Key for secondary sorting
SortOrderPart#Common Mode In (max)
(V)
Common Mode In (min)
(V)
Input Beyond SupplyGain (min)
(V/V)
Gain (max)
(V/V)
Bandwidth - low gain (typ)
(Hz)
Slew Rate (typ)
(V/µs)
Iq/Amp (max)
(A)
Vsupply span (min)
(V)
Vsupply span (max)
(V)
Amps per PackageUS Price 1000 to 4999
($ US)
1AD8479 600 -600 Yes 1 1 130k 7.5 650µ 5 36 1 $2.81
2ADA4830-2------ 300- 2.9 5.5 2 $0.85
3ADA4830-1Reference Circuit Available------ 300- 2.9 5.5 1 $0.61
4AD8208 45 -2 Yes 20 20 70k 1 3m 4.5 5.5 1 $1.67
5AD8279 40.5 -45.3- 0.5 2 1M 1.3 350µ 2 36 2 $1.60
6AD8209 45 -2 Yes 14 14 80k 1 3m 4.5 5.5 1 $1.67
7AD8278 40.5 -45.3- 0.5 2 1M 1.4 200µ 2 36 1 $0.95
8AD8277Reference Circuit Available 27 -30.2 Yes 1 1 550k 1.1 200µ 2 36 2 $1.60
9AD8276Reference Circuit Available 27 -30.2 Yes 1 1 550k 1.1 200µ 2 36 1 $0.95
10AD8271Reference Circuit Available 15.4 -15.4 Yes 0.5 2 20M 30 2.6m 5 36 1 $1.25
11AD8274Reference Circuit Available 40.5 -40.5 Yes 0.5 2 20M- 2.6m 5 36 1 $1.05
12AD8273 40.5 -40.5 Yes 0.5 3 20M 20 2.5m 5 36 2 $1.60
13AD8270 15.4 -15.4- 0.5 2 20M 30 2.5m 5 36 2 $1.91
14AD628Reference Circuit Available 120 -120 Yes 0.1 100 600k 300m 1.6m 4.5 36 1 $1.82
15AD629Reference Circuit Available 270 -270 Yes 1 1 500k 2.1 1m 5 36 1 $2.90
16AD626 24 -24 No 10 100 100k 220m 2m 2.4 12 1 $3.77
17AMP03 20 -20 Yes 1 1 3M 9.5 3.5m 10 36 1 $3.10