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FEATURES High CMV Isolation: 2500 V rms Continuous 3500 V Peak Continuous Small Size: 1.00" 2.10" 0.350" Three-Port Isolation: Input, Output, and Power Low Nonlinearity: 0.012% max Wide Bandwidth: 20 kHz Full-Power (–3 dB) Low Gain Drift: 25 ppm/ C max High CMR: 120 dB (G = 100 V/V) Isolated Power: 15 V @ 5 mA Uncommitted Input Amplifier APPLICATIONS Multichannel Data Acquisition High Voltage Instrumentation Amplifier Current Shunt Measurements Process Signal Isolation GENERAL DESCRIPTION
FB –IN +IN ICOM +VISS –VISS 16 17 19 18 14 15
Precision, Wide Bandwidth 3-Port Isolation Amplifier AD210
FUNCTIONAL BLOCK DIAGRAM
INPUT T1 MOD DEMOD FILTER 1 VO OUTPUT
2 T2 INPUT POWER SUPPLY POWER OSCILLATOR 30 PWR 29 PWR COM POWER T3 OUTPUT POWER SUPPLY 3 4
OCOM +VOSS –VOSS
AD210
The AD210 is the latest member of a new generation of low cost, high performance isolation amplifiers. This three-port, wide bandwidth isolation amplifier is manufactured with surface-mounted components in an automated assembly process. The AD210 combines design expertise with state-of-the-art manufacturing technology to produce an extremely compact and economical isolator whose performance and abundant user features far exceed those offered in more expensive devices. The AD210 provides a complete isolation function with both signal and power isolation supplied via transformer coupling internal to the module. The AD210's functionally complete design, powered by a single +15 V supply, eliminates the need for an external DC/DC converter, unlike optically coupled isolation devices. The true three-port design structure permits the AD210 to be applied as an input or output isolator, in single or multichannel applications. The AD210 will maintain its high performance under sustained common-mode stress. Providing high accuracy and complete galvanic isolation, the AD210 interrupts ground loops and leakage paths, and rejects common-mode voltage and noise that may other vise degrade measurement accuracy. In addition, the AD210 provides protection from fault conditions that may cause damage to other sections of a measurement system.

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