The GX72170 is a high-performance linear Mach-Zender Modulator (MZM) driver designed for 100G DP-QPSK and 200G/400G DP-mQAM metro, and long-haul optical Small-Form-Factor (SFF) transmitters.

The GX72170 is a broad band and ultralow power SiGe single-channel amplifier die, and integrates a linear pre-amplifier and a post-amplifier with AC-coupled differential input and differential output interfaces. The device can drive a linear output voltage of 3.0Vppd with differential characteristic impedance of around 50Ω.


  • 100Ω differential input / 50Ω differential output impedance
  • 0.2 – 0.5Vppd input / 1.5 – 3.0Vppd output 
  • 22GHz 3dB-bandwidth with gain flatness of ±0.5dB up to 10GHz and less than 2dB peaking form 16 to 24GHz
  • 10dB Variable gain control
  • Linear operation with less than 3% total harmonic distortion
  • Integration of peak detector and temperature monitor
  • 420mW power consumption




Type Title Date
Datasheet - Short-form PDF 141 KB
Product Change Notice PDF 134 KB
2 items

Design & Development