Discovery Semiconductors has unveiled the DSC-R418, a linear PIN + transimpedance amplifier with user-adjustable gain. The InGaAsoptical receiver targets 25 to 28 Gbaud/50 to 56 Gbps PAM4 and 25 to 28 Gbps NRZ-ASK (PAM-2) modulation formats for 1310-nm and 1550-nm single-mode systems. The DSC-R418 is available only in Discovery's self-contained Lab Buddy instrument. The DSC-R418 Lab Buddy is also available for 850-nm NRZ-ASK.
"Initially, our plans are to release this product in a Lab Buddy, thus, allowing our customers a quick and easy solution to benchmark their link performance," explained Aaron Berry, senior global sales engineer at Discovery Semiconductor. "At a later date, with advice from our customers, we will release this product in a suitable butterfly or surface-mount package for volume production."
The DSC-R418 offers a differential conversion gain of up to 3000 V/W. Its exhibits linear response to > -6 dBm optical input, -3 dBm of maximum optical overload. The maximum differential voltage peak-to-peak output is ~1 V.
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