LMH0356

100:

SDO

SDO

75:

LMH0302

3G/HD/SD

SDI Cable Driver

SDO

SDI

SDO

SDI

75:

75:

75:

75:

75:

+3.3V

Coaxial Cable

Coaxial Cable

4.7 PF

4.7 PF

5.6 nH

5.6 nH

SD/HD

SD/HD

SDO

SDO

0-30" FR4 Trace

LMH0356

SDI0

SDI0

LMH0344

3G/HD/SD

SDI Cable Equalizer

Coaxial Cable

75:

37.4:

75:

3.9 nH

1.0 PF

1.0 PF

SDI

SDI

18

LMH0356

SNLS270L – AUGUST 2007 – REVISED JANUARY 2016

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Product Folder Links: LMH0356

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Copyright © 2007–2016, Texas Instruments Incorporated

The outputs are LVPECL compatible. SDO is the primary data output and SCO/SDO2 is a second output that

may be set as the serial clock or a second data output. Both outputs are always active. The LMH0356 output

should be DC-coupled to the input of the receiving device as long as the common mode ranges of both devices

are compatible.

Figure 7 shows an example of a DC-coupled interface between the LMH0356 and LMH0302 cable driver. All that

is required is a 100-

Ω differential termination as shown. The resistor should be placed as close to the LMH0302

input as possible. If desired, this network may be terminated with two 50-

Ω resistors and a center tap capacitor to

ground in place of the single 100-

Ω resistor.

The LMH0356 has multiple ground connections, however; the primary ground connection is through the large

exposed DAP. The DAP must be connected to ground for proper operation of the LMH0356.

Figure 6. DC Input Interface

Figure 7. DC Output Interface