02014-DSH-001-D

Mindspeed Technologies

®

7

Mindspeed Proprietary and Confidential

3.0 Functional Description

3.1

Overview

The M02014 is a CMOS transimpedance amplifier with AGC. The AGC gives a wide dynamic range of 32 dB. The

high transimpedance gain of 11 k

Ω ensures good sensitivity.

For optimum system performance, the M02014 die should be mounted with a PIN photodetector inside a lensed

TO-Can or other optical sub-assembly.

The M02014 can either bias the PIN diode from the internal regulator or use an externally biased photo diode.

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

Figure 3-1.

M02014 Block Diagram

DC

Restore

Phase

Splitter

AGC

PINA

PINK

MON

DOUT

DOUT

2.6 V

1 V

DC Shift