SGM8480-2

The SGM8480-2 is a dual, low noise, high precision operational amplifier with ±10V output range. The device consists of an internal charge pump and external capacitors. They produce a VSS rail, which enables the device to operate from 4.5V to 18V single supply. It can be equivalently regarded as operate from ± 4.5V to ± 18V dual power supplies due to the VSS generated by charge pump. This design enables the operational amplifier to be powered by a positive power supply. It also does not require a negative power rail, thereby saving device space.

The SGM8480-2 provides a wide input common mode voltage range from (-VS) + 3V to (+VS) - 1.5V. The output voltage can be lower than 0V. It supports a wide dynamic range and improved resolution for analog-to- digital converters.

The SGM8480-2 has a 7.5MHz gain-bandwidth product and is unity-gain stable. It exhibits maximum offset voltage of 25μV and low offset drift. The 0.1Hz to 10Hz voltage noise is 200nVP-P. The noise of charge pump can be minimized by adjusting external capacitors of charge pump. These specifications, as well as wide input common mode voltage range, make the operational amplifier a good choice for applications such as sensor interfaces and transmitters.

The SGM8480-2 is available in a Green TSSOP-14 package. It is specified over the -40℃ to +125℃ temperature range.