This Operational Amplifier IP is a fully analog, low-power, differential-input, single-ended-output amplifier designed for integration in mixed-signal and low-voltage SoC platforms. It amplifies the differential voltage between two input nodes (VIN+ and VIN−) and provides a single-ended output (VOUT), making it suitable for use in ADC drivers, sensor interfaces, and general-purpose analog signal conditioning.
The op-amp operates with a single supply voltage. It includes differential input stages, high-gain amplification paths, and miller compensation network to ensure stable operation with closed loop configuration.
Structurally, the amplifier consists of a PMOS input differential pair with active current mirror loads, followed by a single-ended gain stage that converts the differential signal to a single-ended output. A Miller or feedforward compensation path is included to guarantee sufficient phase margin in unity-gain buffer configuration and other closed-loop applications.
The amplifier is designed for use in both open-loop and closed-loop configurations. In closed-loop use, the feedback network determines the effective gain, while the amplifier ensures linearity and stability. No digital inputs or control interfaces are required, and the amplifier responds continuously to analog input variations.