TLK6201EA Datasheet, PDF (7/19 Pages) Texas Instruments – 6.25-Gbps Cable and PC Board Equalizer

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APPLICATION INFORMATION
TLK6201EA
SLLS738 – AUGUST 2006
Figure 4 shows the TLK6201EA connected with an ac-coupled interface to the data signal source via a stripline
transmission line on FR4 material. The output load is ac-coupled as well.
The ac-coupling capacitors C₁ through C₄ in the input and output data signal lines are the only required external
components. In addition, if a very low cutoff frequency is required, as an option, an external filter capacitor C_OC
may be used.
LOS
DIS
C_OC
Optional Connection
Optional
for Squelch Function
GND
VCC
DIN+
Input Transmission Line
C₁
DIN+
TLK6201EA ^DOUT+
DIN–
C₂
DIN–
16-Pin QFN _DOUT–
GND
VCC
VCC
C₃
DOUT+
C₄
DOUT–
SWG
DE1
DE0
Figure 4. Basic Application Circuit with AC-Coupled I/Os
0
−5
12-Inch Stripline
−10
−15
−20
−25
24-Inch Stripline
−30
−35
36-Inch Stripline
−40
−45
48−Inch Stripline
−50
−55
−60
0
1
2
3
4
5
f − Frequency − GHz
6
G001
Figure 5. Attenuation Characteristics of Stripline Interconnect Lines
POL
S0072-04
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