25GBaud PAM4 RF Driver, Wide Band Amplifier, Swing 3.3V


The PAM4 RF amplifier is a single input high performance broadband optical modulator driver with very low jitter, 3.3 V swing, with excellent gain and group delay flatness, matched to 38GHz. It is designed for electro-optical test equipment and optical modulator PAM4 driver applications. The driver is intended for lab use or integration. It has gain and power levels that are ideally suitable for driving either Linear EA or LN modulators. It has low power dissipation, ample drive signal, very low added jitter, fast rise/fall times.

PAM4 Amplifier


Low power, 0.9W, and low jitter

Bandwidth up to 38GHz, PAM4 up to 25.7GBaud

Tunable Amplitude, 2.0~ 3.3Vpp

Turnkey EVB, DC5V, Plug and Play


EML, EA, MZM Driver

Microwave Photonics

PAM4 Signal Amplifier

Testing and Measurement


Parameter Unit Min. Typ. Max.
PAM4 Symbol Rate GBaud 25 25.7
NRZ Data Rate Gbps 40 43
3dB Bandwidth GHz 38
P3dB Output dBm 14.5
Output Amplitude Swing Vpp 1.2 3.3
Input Amplitude Swing Vpp 0.1 0.3 0.5
Variable Gain dB 7
Added Jitter (RMS) ps 0.5 0.6
Rise / Fall Time ps 6 9
Input, Output Impedance Ohms 50
Signal  Output and Couple Single Ended, AC Coupled
RF Port SMA male Cable
Operating Temperature 0 ~50
Power supply* DC5V /1A (EVB)
Dimensions  (L×W×H)* mm 150×100×15 (EVB)



1 2 3 4
Package Symbol Rate Output Swing RF Connector
E=EVB 25=25GBaud 3=3.3Vpp M=SMA

Typical PAM4 Eye Diagram 14GBaud & 22.5GBaud

Typical PAM4 Eye Diagram 25.7GBaud & NRZ @32Gbps