The TriQuint TGA4957-SM is a differential input and output optical modulator driver designed to operate at frequencies that target the 40 Gb/s and 100 Gb/s optical markets. The TGA4957-SM consists of a wideband amplifier assembled in a QFN surface mount package combined with a minimum of external components. A single TGA4957-SM placed between the MUX and Optical Modulator provides OEMs with a differential modulator driver surface mount solution. The TGA4957-SM provides Metro and Long Haul designers with system critical features such as: low power dissipation, low rail ripple, high voltage drive capability (4 Vpp amplitude adjustable up to 8 Vpp), and very low output jitter. Several of the bias pins on the TGA4957-SM are internally set to simplify the users PCB design. Alternatively, these same pins can be adjusted by the user, if desired. Duplicate pins are available to enable biasing from either side of the package. The TGA4957-SM can be biased using a minimum of four separate power supplies.
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Technical Specifications
Qorvo TGA4957-SM technical specifications.
General
| Optical Market Application | 40 Gb/sGb/s |
| Optical Market Modulation | DQPSK and DP-BPSK |
| Optical Market Application | 100 Gb/s ODB |
| Performance | 40Gb/s |
| Input/Output Type | Differential |
| Adjustable Output Amplitude | 4 – 8Vpp |
| Low Additive RMS Jitter | 600fsec |
| High Output Drive | 8 Vpp differential output with 1 Vpp differential Input |
| Gain | 22dB |
| Gain Frequency | 14GHz |
| Low DC Power Dissipation | 2.3W |
| Vout for Power Dissipation | 8Vpp |
| Vd for Power Dissipation | 5V |
| Rise and Fall Times | 13psec |
| QFN Package Size | 6x6mm |
| QFN Package Leads | 40Lead |
| Typical Eye Diagram Bias Vd1/Vd2/Vd3 | 5V |
| Typical Eye Diagram Bias Vg2 | -0.4V |
| Typical Eye Diagram Bias Vg2 (for 4Vpp) | -0.6V |
| Typical Eye Diagram Bias Vg3 | -1.1V |
| Typical Eye Diagram Measured Amplitude | 8.02V |
| Typical Eye Diagram Measured Jitter RMS | 710fs |
| Typical Eye Diagram Measured Rise Time | 12.93ps |
| Typical Eye Diagram Measured Eye S/N | 18.78 |
| S-Parameters Bias Vd | 5V |
| S-Parameters Bias Id | 468mA |
| S-Parameters Bias Vg2 | -0.4V |
| S-Parameters Bias Vg3 | -1.1V |
| S-Parameters Bias Vc3 | 0V |
Compliance
| RoHS | Compliant |
Datasheet
Qorvo TGA4957-SM Datasheet
Download the complete datasheet for Qorvo TGA4957-SM to view detailed technical specifications.
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