The THS4509 is a wideband, fully differential op amp designed for 5 V data acquisition systems. It has very low noise at 1.9 nV/Hz, and extremely low harmonic distortion of 75 dBc HD2 and 80 dBc HD3 at 100 MHz with 2 Vpp, G = 10 dB, and 1 k load. Slew rate is very high at 6600 Vs and with settling time of 2 ns to 1% (2 V step) it is ideal for pulsed applications. It is designed for minimum gain of 6 dB, but is optimized for gain of 10 dB.