The OPA1611AID is a low power precision Operational Amplifier achieves very low 1.1nV/√Hz noise density with an ultralow distortion of 0.000015% at 1kHz. The OPA1611 offers rail-to-rail output swing to within 600mV with a 2kR load, which increases headroom and maximizes dynamic range. This device also have a high output drive capability of ±30mA.This device operate over a very wide supply range of ±2.25 to ±18V, on only 3.6mA of supply current per channel. The OPA1611 op-amp is unity-gain stable and provide excellent dynamic behaviour over a wide range of load conditions. The dual version features completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.