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M02015

18

Low Power CMOS Transimpedance Amplifier with Rx Pwr Mon Output and AGC for Fiber

Optic Networks up to 2.5 Gbps

Rev V6

3.0 Functional Description

3.1

Overview

The M02015 is a CMOS transimpedance amplifier with AGC. The AGC gives a wide dynamic range of 32 dB. The

high transimpedance gain of 9.0 k

Ω ensures good sensitivity.

For optimum system performance, the M02015 die should be mounted with a GaAs or InGaAs PIN photodetector

inside a lensed TO-Can or other optical sub-assembly.

The M02015 can either bias the PIN diode from the internal regulator or use an externally biased PIN diode.

A replica of the average photodiode current is available at the MON pad for photo-alignment and Receive Power

monitoring (SFF-8472 compliant).

Figure 3-1.

M02015 Block Diagram

DC

Restore

Phase

Splitter

AGC

PINA

PINK

MON

DOUT

DOUT

2.6 V

1 V

DC Shift