clc2500 Cadeka Microcircuits LLC., clc2500 Datasheet - Page 6

• Manufacturer Part Number: clc2500
• Description: Dual Ultrafast Voltage Comparator
• Manufacturer: Cadeka Microcircuits LLC.

Advance Data Sheet
General Information
The CLC2500 is an ultrahigh-speed dual voltage
comparator. It offers tight absolute characteristics. The
device has differential analog inputs and complementary
logic outputs compatible with ECL systems. The output
stage is adequate for driving terminated 50Ω transmission
lines.
The CLC2500 has a complementary latch enable control
for each comparator. Both should be driven by standard
ECL logic levels.
The negative common mode voltage is –2.5V. The positive
common mode voltage is +4.0V. The dual comparators
share the same V
separate grounds for each comparator to achieve high
crosstalk rejection.
©2007-2008 CADEKA Microcircuits LLC
CC
and V
EE
connections but have
Figure 2 - Internal Function Diagram
Layout Considerations
General layout and supply bypassing play major roles
in high frequency performance. CaDeKa has evaluation
boards to use as a guide for high frequency layout and as
aid in device testing and characterization. Follow the steps
below as a basis for high frequency layout:
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Refer to the evaluation board layouts below for more
information.
Evaluation Board Information
An evaluation board is available for the CLC2500, contact
CADEKA for more information.
Include 6.8µF and 0.1µF ceramic capacitors for power
supply decoupling
Place the 6.8µF capacitor within 0.75 inches of the power pin
Place the 0.1µF capacitor within 0.1 inches of the power pin
Remove the ground plane under and around the part,
especially near the input and output pins to reduce
parasitic capacitance
Minimize all trace lengths to reduce series inductances
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