Coherent, a global leader in photonics innovation, announced the launch of its new 56 Gbaud PAM4 transimpedance amplifier (TIA), expanding its open-market ASIC product lineup.
The latest addition, part of the CHR1065 family, is engineered specifically for cutting-edge 400G and 800G optical transceivers. It delivers exceptional performance combined with practical advantages for system designers. Featuring an industry-leading 2 µARMS input-referred noise, the amplifier provides enhanced receiver sensitivity, enabling extended optical reach in demanding network environments. With a high linearity tolerance of up to 2.5 mA, the device maintains robust performance across diverse link budgets.
Designed for efficiency, the CHR1065 consumes only 227 mW per channel, making it an ideal solution for power-sensitive, high-density data centers by reducing both operational costs and cooling requirements. Additional features include a 750 µm optical pitch, advanced I2C monitoring capabilities, and seamless integration across four devices—making it well-suited for compact DR, FR, and LR optical module designs.
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“Coherent continues to extend its long-standing fiber-optic ASIC portfolio and offer selected products to the open market,” said Dr. Beck Mason, Executive VP of Semiconductor Devices at Coherent. “The CHR1065 is the latest example of this, soon to be followed by 112 GBaud ASICs and 224 GBaud thereafter.”
The CHR1065 is now available as a wire-bondable bare die and has entered full-volume production. Engineering samples are shipping in 25-piece waffle packs. Built on decades of proven deployment in Coherent’s optical transceivers, this TIA benefits from established design reliability and meets JEDEC-standard lifetime testing to ensure long-term operational stability.