F0321818Q Datasheet, PDF (1/11 Pages) Eudyna Devices Inc – 2 GHz Bandwidth Limiting Amplifier

Preliminary
♦ Features
• -5 V single power supply
• 20 dB typical gain
• 2.0 GHz typical -3 dB cutoff frequency
• On-chip matching to 50 Ω
• 55 mA typical operating current
• Low-cost 20-lead QFP package
• Differential input and output
• Differential ECL compatible input
01.08.28
F0321818Q
2 GHz Bandwidth
Limiting Amplifier
♦ Applications
• Post-amplifier of an optical receiver circuit
up to 2.5 Gbps
• Logic gate buffer to interface between analog circuit and logic circuit
♦ Functional Decription
The F0321818Q is a stable GaAs integrated limiting amplifier for use in a post-amplifier
of an optical receiver circuit up to 2.5 Gbps. The F0321818Q typically specifies a small
signal gain of 20 dB (Rs=RL=50 Ω) with a 3 dB-cutoff-frequency of 2.0 GHz. It features
single +5 V supply operation, excellent VSWR’s of 1.1:1, and a typical dissipation current of
55 mA.
The F0321818Q can be also used as interface circuits in sensing systems and measure-
ment instruments. Emitter coupled logic (ECL) or source coupled FET logic (SCFL) circuits
are the most popular IC’s for high speed digital circuits; the F0321818Q operating under a
differential ECL compatible input condition is the best choice as the interface IC to join ana-
log circuits to ECL circuits or conventional GaAs logic IC’s.