GENERAL DESCRIPTION
The TZA3044 is a high gain limiting amplifier that is designed to process signals from fibre optic preamplifiers like the TZA3043. It is pin compatible with the NE/SA5224 and NE/SA5225 but with extended power supply range, and needs less external components. Capable of operating at 1.25 Gbits/s, the chip has input signal level detection with a user-programmable threshold. The data and level-detection status outputs are differential outputs for optimum noise margin and ease of use.

FEATURES
• Pin compatible with the NE/SA5224 and NE/SA5225 but with extended power supply range and less external component count
• Wideband operation from 1.0 kHz to 1.25 GHz typical
• Applicable in 1.25 Gbits/s Gigabit Ethernet receivers
• Single supply voltage from 3.0 to 5.5 V
• PECL (Positive Emitter Coupled Logic) compatible data outputs
• Programmable input signal level-detection to be adjusted using a single external resistor
• On-chip DC offset compensation without external capacitor
• Fully differential for excellent PSRR.

APPLICATIONS
• Digital fibre optic receiver for Gigabit Ethernet applications
• Wideband RF gain block.