The ADA4870 is a unity gain stable, high-speed current feedback amplifier capable of delivering 1A of continuous output current from a 40V supply. Manufactured on ADI’s proprietary high voltage XFCB process, the innovative architecture of the ADA4870 enables high performance signal processing solutions in a variety of demanding applications.

The ADA4870 is ideal for driving the gate of high voltage Power FETs, Piezo transducers, PIN diodes, CCD panels and a variety of other demanding applications that require wide dynamic range from high supply voltage and high current output.

The ADA4870 is available in a Power SOIC package (PSOP), featuring an exposed thermal slug that provides high thermal conductivity enabling efficient heat transfer for improved reliability in demanding environments . The ADA4870 operates over the industrial temperature range (−40°C to +85°C) at maximum performance when appropriate thermal management techniques are applied.

FEATURES AND BENEFITS

• Ideal for driving high capacitive or heavy resistive loads
• Wide supply range: 10 V to 40 V
• High output current drive: 1A
• Wide output voltage swing: 37 V swing with 40 V supply
• Large signal −3dB BW: 45 MHz (VOUT = 20 V p-p, 300 pF load)
• High slew rate: 2500 V/μs (peak)
• Low Noise: 3nV/√Hz
• Supply current: 34 mA
• Power down (800 μA)
• Short-circuit current protection
• Current limit: 1.2 A
• Thermal overload protection & flag

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