General Description
The TIA56A is a versatile high-speed transimpedance amplifier designed for the amplification and manipulation of signals with data rates to over 43Gb/s with >28GHz bandwidth. The TIA56A consists of a fully symmetrical differential input and output buffer and is optimized for 50 Ω line termination.

Product Features
• Differential input and differential output
• Input or output can be used single-ended
• Limiting operation, 4.5kΩ differential transimpedance
• Low noise, 30 pA/√Hz typical
• Adjustable input offset
• Peak level detection
• Output sense for offset control
• Bandwidth of 30GHz that can be adjusted
• Output eye shape adjustment pin
• DC and AC coupled operation
• Single supply voltage of -5.2 V
• SiGe technology with ƒT / ƒmax of 170 / 250 GHz

Applications
• 43 Gbps DPSK receivers
• TIA for photoreceiver
• Amplitude regeneration
• Active power/signal splitter
• 50 Ω line driver