TSU10x Nanopower Operational Amplifiers STMicroelectronics TSU10x Nanopower Operational Amplifiers offer an ultralow-power consumption combined with a supply voltage range of 1.5V to 5.5V. These features allow the TSU101, TSU102, and TSU104 to be efficiently supplied by a coin-type Lithium battery or a regulated voltage in low-power applications. The gain bandwidth of these devices makes them ideal for sensor signal conditioning, battery supplied, and portable applications.