A 1GSample/s, 15 GHz input bandwidth master-slave track-&-hold amplifier in InP-DHBT technology

A fully differential master-slave track-and-hold amplifier with 15 GHz input bandwidth is designed and fabricated in a 210-GHz-f
_T
InP-DHBT process on a 1.6times2.8 mm
²
chip. A Total Harmonic Distortion lower than -39 dB and a Third Harmonic Rejection greater than 45 dB are measured for 1 GSample/s and 4 dBm single-ended input signal. Time domain measurements are also presented.