1GHz voltage feedback op amp

Analog Devices has introduced an operational amplifier that combines voltage-feedback, unity-gain stability, and a pin-out optimised for high-performance systems.

The AD8045 is a unity-gain stable, 1GHz voltage-feedback amplifier that can slew at 1350 V/us and settle to 0.1 percent in 7.5 nsec. With spurious-free dynamic range of 101 dBc at 5 MHz and low noise of 3 nV/rt Hz, the amplifier is suitable for systems that demand high resolution at high speeds.

In addition, the AD8045 has a voltage offset of 200 uV and input bias current of 2uA. The amplifier can operate on supply voltages between 3.3 V and 12 V.

The AD8045 features an advanced pin-out to enhance performance and stability over traditional amplifier pin-outs. The AD8045 uses this new standard pin-out to reduce the mutual inductance – and resulting distortion products – caused by the coupling between positive input and negative supply.

Additionally, the amplifier provides two output pins to reduce feedback parasitics. This simplifies board layout and increases the stability of the amplifier.

The AD8045 is now available in full production quantities. The part is specified over the extended industrial temperature range (-40 degrees C to +125 degrees C) and is available in a tiny 3 mm x 3 mm LFCSP (lead-frame chip scale package) and an 8-lead SOIC (small outline integrated circuit).

Both packages feature an exposed paddle that provides better thermal characteristics. In either packaging option, the device is priced at $1.39 per unit in 1,000-piece quantities.

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