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MAX3942：10Gbps Modulator Driver

10Gbps Modulator Driver in Space-Saving 4mm x 4mm TQFN

The MAX3942 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 MAX3942 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 MAX3942 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.

Key Features 23ps Edge Speed Single-Ended Modulation Voltage Up to 3VP-P Differential Modulation Voltage Up to 6VP-P Selectable Data-Retiming Latch Up to 10.7Gbps Operation 50Ω On-Chip Input and Output Terminations Pulse-Width Adjustment Enable and Polarity Controls ESD Protection

MAX3942: Typical Application Circuit Applications/Uses 10Gbps Ethernet DWDM Systems Long/Short-Reach Optical Transmitters Mach Zehnder Modulators Packaged Direct-Modulated Lasers SONET OC-192 and SDH STM-64 Transmission Systems

DataSheet

Parametrics

Design kits & evaluation modules

• MAX3942EVKIT

Quality and Environmental Data

• MAX3942.pdf

Related Products

• MAX3942：10Gbps Modulator Driver
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• MAX3940：10Gbps EAM Driver with Integrated Bias Network

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