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.
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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