AD215

a FEATURES Isolation Voltage Rating: 1,500 V rms Wide Bandwidth: 120 kHz, Full Power (–3 dB) Rapid Slew Rate: 6 V/␮ s Fast Settling Time: 9 ␮s Low Harmonic Distortion: –80 dB @ 1 kHz Low Nonlinearity: ؎0.005% Wide Output Range: ؎10 V, min (Buffered) Built-in Isolated Power Supply: ؎ 15 V dc @ ؎10 mA Performance Rated over –40؇C to +85 ؇C APPLICATIONS INCLUDE High Speed Data Acquisition Systems Power Line and Transient Monitors Multichannel Muxed Input Isolation Waveform Recording Instrumentation Power Supply Controls Vibration Analysis 120 kHz Bandwidth, Low Distortion, Isolation Amplifier AD215 FUNCTIONAL BLOCK DIAGRAM FB 4 UNCOMMITTED INPUT OP AMP IN– 3 IN+ 1 IN COM 2 MODULATOR T1 33kΩ POWER +VISO 6 –VISO 5 ISOLATED DC SUPPLY T2 430kHz POWER OSCILLATOR 42 +15VIN 44 –15VIN 43 PWR RTN DEMODULATOR LOW-PASS FILTER 150kHz OUTPUT BUFFER 36 TRIM 0.01µF 37 OUT LO SIGNAL R R 38 OUT HI AD215 GENERAL DESCRIPTION The AD215 is a high speed input isolation amplifier designed to isolate and amplify wide bandwidth analog signals. The innovative circuit and transformer design of the AD215 ensures wideband dynamic characteristics while preserving key dc performance specifications. The AD215 provides complete galvanic isolation between the input and output of the device including the user-available front-end isolated power supplies. The functionally complete design, powered by a ± 15 V dc supply, eliminates the need for a user supplied isolated dc/dc converter. This permits the designer t...