Maxim MAX3942ETG+

Драйвер-5,5 В ~ -4,9 В

Overview

The MAX3942ETG is designed to drive high-speed optical modulators at data rates up to 10.7Gbps. It functions as a modulation circuit, with an integrated control op amp externally programmed by a DC voltage. A high-bandwidth, fully differential signal path is internally implemented to minimize jitter accumulation. When a clock signal is available, the integrated data-retiming function can be selected to reject input-signal jitter. The MAX3942ETG receives differential CML signals (groundreferenced) with on-chip line terminations of 50Ω. Each of the differential outputs has an on-chip 50Ω resistor for back termination. The driver is able to deliver a modulation current of 40mAP-P to 120mAP-P, with an edge speed of 23ps (typical 20% to 80%). This modulation current reflects a modulation voltage of 1.0VP-P to 3.0VP-P single ended or 2.0VP-P to 6.0VP-P differential. The MAX3942ETG also includes an adjustable pulse-width control circuit to precompensate for asymmetrical modulator characteristics. It is available in a compact 4mm x 4mm, 24-pin thin QFN package and operates over the -40°C to +85°C temperature range.

Features

Applications

• Fractional T1/E1/J1
• BITS Timing
• Digital Access Cross-connect System (DACs)
• Digital Cross-connect Systems (DCS)
• Frame Relay Switches and Access Devices (FRADS)
• ISDN Primary Rate Interfaces (PRA)
• PBXs channel bank
• PCM channel bank
• T3 channelized access concentrators
• M13 MUX