MAX3980 Maxim Integrated Products, MAX3980 Datasheet
MAX3980
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MAX3980 Summary of contents
Page 1
... XAUI lanes to reach up to 40in (1.0m) on FR4 board material. The equalizer has 100Ω differential CML data inputs and outputs. The MAX3980 is available in a 44-pin exposed-pad QFN package. The MAX3980 consumes only 700mW at +3.3V or 175mW per channel. IEEE-802.3ae XAUI Interface (3.125Gbps) InfiniBand (2.5Gbps) ...
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XAUI Quad Equalizer ABSOLUTE MAXIMUM RATINGS Supply Voltage, V .............................................-0. Voltage at SDET, IN_± ..............................+0. Current Out of OUT_±.......................................-25mA to +25mA Continuous Power Dissipation (T = +85°C) A 44-Pin QFN-EP (derate 26.3mW/°C above ...
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... CONNECTOR Figure 1. Test Conditions Referenced in the Electrical Characteristics Table _______________________________________________________________________________________ 3.125Gbps XAUI Quad Equalizer = 0°C to +85°C. Typical values are CONDITIONS Internal 10kΩ pullup Internal 10kΩ pullup C MAX3980 IN OUT = +3.3V and T = +25°C, unless CC A MIN TYP MAX UNITS 2 ...
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XAUI Quad Equalizer (V = +3.3V, 3.125Gbps, 500mVp-p board input with 2 CC EQUALIZER INPUT EYE DIAGRAM BEFORE EQUALIZATION (40in FR4 6mil STRIPLINE) 50mV/ div 50ps/div INPUT RETURN GAIN (S11, DIFFERENTIAL, INPUT SIGNAL = -60dBm, DEVICE POWERED OFF) 10 ...
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PIN NAME 13, 23, 27, 31, V +3.3V Supply Voltage IN1+ Positive Equalizer Input Channel 1, CML 3 IN1- Negative Equalizer Input Channel 1, CML 4, 8, 12, 16, 26, 30, 34, GND Supply ...
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... CML signals. The source impedance and ter- mination impedances are 100Ω differential. General Theory of Operation Internally, the MAX3980 comprises signal-detect cir- cuitry, four matched equalizers, and one equalizer- control loop. The four equalizers are made mas- ter equalizer and three slave equalizers. The adaptive control is generated from only channel 1 ...
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... Layout Considerations Circuit-board layout and design can significantly affect the MAX3980 performance. Use good high-frequency design techniques, including minimizing ground induc- tances and vias and using controlled-impedance trans- mission lines for the high-frequency data signals. ...
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XAUI Quad Equalizer (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 8 _______________________________________________________________________________________ Package Information PACKAGE OUTLINE 32,44,48L QFN, 7x7x0. 21-0092 H ...
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For the latest package outline information www.maxim-ic.com/packages.) U _______________________________________________________________________________________ 3.125Gbps XAUI Quad Equalizer Package Information (continued) PACKAGE OUTLINE, 32,44,48L QFN, 7x7x0. 21-0092 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...