General Description

The MAX3654 analog transimpedance amplifier (TIA) is designed for CATV applications in fiber-to-the-home (FTTH) networks. This high-linearity amplifier is intended for 47MHz to 870MHz subcarrier multiplexed (SCM) signals in passive optical networks (PON). A gain-control input supports AGC operation with optical inputs having -6dBm to +2dBm average power. With 62dBΩ maximum gain at 47MHz and 18dB gain control range, the minimum RF output level is 14dBmV/channel at -6dBm optical input. A compact 4mm x 4mm package includes all of the active RF circuitry required to convert analog PIN photocurrent to a 75Ω CATV output.

Features

♦ 47MHz to 870MHz Operation

♦ -6dBm to +2dBm Optical Input Range

♦ 21dBm OIP3, 47dBm OIP2

♦ 5.5pA/√Hz EIN (Amplifier Alone)

♦ 62dB Gain at 47MHz

♦ 18dB Transimpedance (Gain) Control

♦ Integrated +4dB Gain Tilt (with Typical Photodiode)

♦ +5V Single-Supply Operation

♦ 700mW Power Dissipation

♦ -40°C to +85°C Operating Temperature Range

♦ 4mm x 4mm TQFN Package

Applications

    FTTH Optical Network Termination (ONT)