MAX3910

10.7Gbps Linear Transimpedance Amplifier with Output Offset Adjust

Data Sheet (Rev. 1)

Viewing:

Overview

950µA_P-P Linear Range

15.5µA_P-P Sensitivity

3.5mA_P-P Overload

1.65kΩ Transimpedance

9.1GHz Bandwidth

110mA Supply Current

Output Offset Adjustment

Soft-Limiting Beyond Linear Input Range

Single +5V or -5.2V Power Supply

ESD Protection

The MAX3910 is a 10.7Gbps transimpedance amplifier designed for SONET OC-192/SDH STM-64, DWDM, and 10Gbps systems employing optical amplifiers. Operating from a single +5V or -5.2V supply, it converts a photodiode current into a measurable differential voltage. This product has a linear gain for an input current up to 950µA_P-P and a soft-limiting feature that provides an increasing output swing for an input current up to the 3.5mA_P-P overload. An offset adjust circuit and out-put- level monitors allow system threshold adjustments. Additional features include back-terminated 50Ω out-puts and an integrated 200Ω filter resistor to bias the photodiode.

The MAX3910 has a small-signal bandwidth of 9.1GHz and a small-signal transimpedance of 1.65kΩ. The part achieves an input sensitivity of 15.5µA_P-P for a BER of 10^-12, translating to an optical sensitivity of -19.3dBm for a PIN (r = 0.9, r_e = 6.6) photo detector and -28.8dBm for an APD (M = 8, ñ = 0.9, r_e = 10) photo detector.

The MAX3910 is fabricated in Maxim's in-house SiGe process and is available in die form.

Applications