Isolation Amplifiers

Isolation Amplifiers provide power supply designers with a higher performing, single chip alternative to isolation techniques based on optocouplers and shunt regulators. Analog Devices ADuM3190 and ADuM4190 isolated error amplifiers have a 400 kHz bandwidth, with 0.5% typical initial accuracy at 25°C and 1% total accuracy over the extended temperature range of –40˚C to +125˚C. This provides manufacturers of ac-to-dc and dc-to-dc power supplies with a significant upgrade in speed and operating temperature range, as well as a 5× improvement in transient response.

Product Selection Table

Isolation Amplifiers

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SortOrderPart## of ChannelsBW -3 dB
(typ)
(Hz)
Insulation Rating
(V rms)
Gain
(min)
(V/V)
Gain
(max)
(V/V)
Nonlinearity %
(typ)
(%)
Temp RangeVs span
(max)
(V)
Vs span
(min)
(V)
Vs TypePrice (1000+)
($ US)
1ADUM3190S 1 400k 500 0.83 2.7 0.7- 20 3 Single-
2ADUM4190Reference Circuit Available 1 400k 5k 0.83 2.7 1- 20 3 Single-
3ADUM3190Reference Circuit Available 1 400k 2.5k 0.9 2.86 1- 20 3 Single-
4AD215 2 120k 1500 1 100 0.01- 34 28.5 Dual-
5AD208 2 4k 1500 1 1000 0.0125--- Single-
6AD203 2 10k 1500 1 10 0.025- 16 12 Single-
7AD210 3 20k 2500 1 100 0.012- 16.5 13.5 Single-
8AD204 2 5k 1500 1 100 0.025- 16.5 13.5 Single-
9AD202 2 5k 1500 1 100 0.025- 16.5 13.5 Single-