4336TA
43 Gbps Transimpedance Amplifier With 3.5 kΩ Differential Gain

Applications

• SONET OC-768 and SDH STM-256 equipment
• 40G Very Short Reach (VSR) modules
• Serial 40 Gbps Ethernet (40 GbE-FR) Receivers

Features

• 3.5 kΩ differential electrical gain
• Optical receiver S21 3-dB BW of 31 GHz
• Differential output amplitude of 550 mVpp
• Low power consumption: 395 mW, typical
• Single +3.3V power supply
• Adjustable bandwidth and peaking
• Available in die form (1130 μm x 830 μm)

Description

The 4336TA transimpedance amplifier (TIA) is designed for use with a PIN photodetector for 40G VSR applications. The TIA includes an internal DCA feedback loop that automatically adjusts the decision threshold of the limiting amplifier to compensate for variations in the average input current.

The 4336TA includes an adjustable bandwidth and peaking feature that allows the user to optimize receiver frequency response. The TIA allows for typical receiver bandwidth of 31 GHz when in the default bandwidth state.

The 4336TA provides 3.5 kΩ of differential gain and differential output amplitude of 550 mVpp, eliminating the need for a separate post amp. It operates off a single +3.3 V power supply and is available in die form
(1130 µm x 830 µm).

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