ADI AD202KN

The AD202 and AD204 are general purpose, two-port, transformer-coupled isolation amplifiers that may be used in a broad range of applications where input signals must be measured, processed, and/or transmitted without a galvanic connection. These isolation amplifiers offer a complete isolation function, with both signal and power isolation provided for in a single compact plastic SIP or DIP style package.

The AD202 and AD204 provide total galvanic isolation between the input and output stages of the isolation amplifier through the use of internal transformer-coupling. The functionally complete AD202 and AD204 eliminate the need for an external, user-supplied dc-to-dc converter. This permits the designer to minimize the necessary circuit overhead and consequently reduce the overall design and component costs.

The design of the AD202 and AD204 emphasizes maximum flexibility and ease of use, including the availability of an uncommitted op amp on the input stage. They feature a bipolar ±5V output range, an adjustable gain range of from 1V/V to 100 V/V, ±0.025% max nonlinearity (K grade), 130 dB of CMR, and the AD204 consumes a low 35 mW of power.

• Small Size: 4 Channels/lnch
• Low Power: 35 mW (AD204)
• High Accuracy: ±0.025% Max Nonlinearity (K Grade)
• High CMR: 130 dB (Gain = 100 V/V)
• Wide Bandwidth: 5 kHz Full-Power (AD204)
• High CMV Isolation: ±2000 V pk Continuous (K Grade)
• (Signal and Power) Isolated Power Outputs
• Uncommitted Input Amplifier

• Multichannel Data Acquisition
• Current Shunt Measurements
• Motor Controls
• Process Signal Isolation
• High Voltage Instrumentation Amplifier