At a Glance
- 32 GBd 2-bit DAC for Mach-Zehnder Modulator
Technical Background
Ultra low-power SiGe 2-bit DAC generates either NRZ or PAM-4 electrical signal to driver InP Mach-Zehnder modulator. The output stage is designed to include 2 x 25 Ω for the impdance matching with the modulator. 2-bit DAC with 2 x 50 Ω output impedance is also available as laboratory sample upon request.
Features
- Differential inputs and differential ouput
- Ultra-Low Power, 145 mW
- Eye-level control in PAM-4
- 1.7 Vpp, differential output with 2 x 25 Ω loads
- Supports NRZ, PAM-4 output signals
Applications
- Telecom and Datacom
- Broadband signal amplifi cation
- PAM-4 / NRZ driver for Mach-Zehnder modulator
Specifications
| Parameter | Typ | Max | Unit | Conditions |
|---|---|---|---|---|
| Bandwidth | 145 | mW | ||
| Data Rate | 32 | GBd | ||
| Differential Input Signal | 500 | mV(pp) | AC-coupled, differential | |
| Differential Output Signal | 1700 | mV(pp) | 2 x 2,5 Ω load, differential | |
| Power Supply | 2.2 | V | Supply at 25 Ω: 2.0V | |
| Operation Temperture | 40 | °C |