2850TA
28Gbps Dual Differential Input Linear TIA/VGA Amplifier for 100G coherent receivers

Applications

• 100G coherent receivers

Features

• Supports data rates up to 28 Gbps
• Dual monolithic TIA/VGA
• 300 Ω to 5 K Ω differential electrical gain
• Typical 3 dB bandwidth: 25 GHz
• Adjustable amplitude: 300 – 900 mVpp differential
• Automatic or manual gain control
• Peak detector output
• Low power consumption: 500 mW typical
• Available in die form

Description

The 2850TA is a dual, differential linear transimpedance/variable-gain amplifier (TIA/VGA) for 100G coherent detection receiver applications.

The 2850TA offers two gain control modes: manual gain control and automatic gain control. In manual mode, the gain is controlled from 300 Ω to 5 K Ω differential via an external control pin. In automatic mode, the gain is automatically adjusted to deliver a constant output voltage.

The 2850TA provides linear amplification for current levels from 60 μApp to 1 mApp differential.
The 2850TA has typical small-signal bandwidth of 25 GHz. Output return loss is better than 10 dB.

The 2850TA has DC current offset cancellation to accommodate a wide range of local oscillator power levels for coherent detection applications.

The 2850TA operates from a single +3.3 V power supply, consumes 500 mW typical, and is available in die form.

 

For more information about the 2850TA or other Inphi products, please click here and enter your email address for product downloads. New users, must first complete our product request form.

Back to Networking & Communications Products