Two-port transformer-coupled isolation amplifier provides galvanic signal and power isolation in compact SIP or DIP package options. The amplifier operates from a 15 V dc supply and supports adjustable gain from 1 V/V to 100 V/V with a bipolar ±5 V rated output. AD202 grades provide 750 V rms or 1500 V rms continuous input-to-output isolation, with maximum nonlinearity of ±0.05% or ±0.025% depending on grade. The device specifies 2 kHz full-power bandwidth, 105 dB isolation-mode rejection at unity gain, and operation from −40°C to +85°C.
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| Amplifier type | Two-port transformer-coupled isolation amplifier |
| Gain range | 1 to 100V/V |
| Gain error | ±0.5 typ, ±4 max% |
| Gain temperature coefficient | ±20 typ, ±45 maxppm/°C |
| Nonlinearity, J grade | ±0.05 max% |
| Nonlinearity, K grade | ±0.025 max% |
| Input voltage range | ±5V |
| Isolation voltage, J grade, 60 Hz continuous | 750V rms |
| Isolation voltage, K grade, 60 Hz continuous | 1500V rms |
| Continuous isolation voltage, J grade | ±1000V peak |
| Continuous isolation voltage, K grade | ±2000V peak |
| Isolation-mode rejection ratio at unity gain | 105dB |
| Isolation-mode rejection ratio at gain of 100 | 130dB |
| Differential input impedance at unity gain | 1e12Ω |
| Input bias current at 25°C | ±30pA |
| Bandwidth at output up to 10 V p-p | 2kHz |
| Settling time to ±10 mV for 10 V step | 1ms |
| Rated output voltage | ±5V |
| Power supply voltage, rated performance | 15 ±5%V |
| Operating temperature range | -40 to +85°C |
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