CLC014AJE National Semiconductor, CLC014AJE Datasheet - Page 15

• Manufacturer Part Number: CLC014AJE
• Description: 07B4822
• Manufacturer: National Semiconductor

Specifications of CLC014AJE

• Ic Function: Adaptive Cable Equalizer
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Termination Type: SMD
• Rohs Compliant: No
• Filter Terminals: SMD
• Data Rate Max: 650Mbps
• Lead Free Status / Rohs Status: Not Compliant

Typical Applications
(Continued)
Category 5 UTP has a characteristic impedance of approxi-
mately 100Ω. The CLC006 in Figure 13 is used to drive the
twisted pair AC-coupled with a series 0.1 µF capacitor and a
50Ω resistor in each differential output. The CLC014 Adap-
tive Equalizer requires 800 mV
from the transmit side of
pp
the cable. A voltage divider is necessary to scale the voltage
to the required level at the input of the CLC014. This resistor
network also provides the correct impedance match for
twisted pair.
For Category 5 UTP, the approximate AEC voltage per
length is 3.75 mV/m (see Block Description). The CLC006
provides a trim adjust for fine tuning the output signal with
the resistor R. Refer to the CLC006/007 datasheet for tuning
directions.
10005634
10005633
FIGURE 14. Before and After Equalization at 622 Mbps
Through 50 Meters of Category 5 UTP
FIGURE 13. Twisted Pair Equalization
10005635
FIGURE 15. Typical Measurement Setup
15
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