The THS4535 is a fully differential CMOS amplifier designed to optimize dc and ac performance for driving < 2MSPS ADCs. The base version of this device, THS4535, is designed for single-ended to differential conversions in low-side current sensing or funnel amplifier applications. When dc precision is needed, the THS4535A provides a temperature trimmed version of the device. This temperature trimming, along with state of the art package construction, allows applications in data acquisition systems (DAQ) to minimize errors due to temperature drift, long-term drift, or applications that are sensitive to overtemperature shifts in bias current or input offset current. For the highest level of precision, the THS4535A offers four integrated SiCr resistors that are specifically designed to drift together over temperature and time. The result of these matched resistors is a system optimized for gain-error drift, CMRR drift, and long-term drift, providing a precision system without sacrificing ac output balance or distortion, and without the need for expensive laser trimmed resistors.