AD8196ACPZ-RL Analog Devices Inc, AD8196ACPZ-RL Datasheet - Page 18

• Manufacturer Part Number: AD8196ACPZ-RL
• Description: IC,Telecom Switching Circuit,LLCC,56PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Type: HDMI/DVI Switchr

Specifications of AD8196ACPZ-RL

• Applications: DVI, HDMI Signal Switching
• Mounting Type: Surface Mount
• Package / Case: 56-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD8196
APPLICATION NOTES
The AD8196 is an HDMI/DVI switch featuring equalized
TMDS inputs and pre-emphasized TMDS outputs. It is in-
tended for use as a 2:1 switch in systems with long cable runs
on both the input and/or the output, and is fully HDMI 1.3
receive-compliant.
PINOUT
The AD8196 is designed to have an HDMI/DVI receiver pinout
at its input and a transmitter pinout at its output. This makes the
AD8196 ideal for use in AVR-type applications where a designer
routes both the inputs and the outputs directly to HDMI/DVI
connectors as shown in Figure 31. When the AD8196 is used in
receiver-type applications, it is necessary to change the order of
the output pins on the PCB to align with the on-board receiver.
One advantage of the AD8196 in an AVR-type application is
that all of the high speed signals can be routed on one side (the
topside) of the board, as shown in Figure 31. In addition to
12 dB of input equalization, the AD8196 provides up to 6 dB of
output pre-emphasis that boosts the output TMDS signals and
Figure 31. Evaluation Board Layout of the TMDS Traces
Rev. 0 | Page 18 of 24
allows the AD8196 to precompensate when driving long PCB
traces or output cables. The net effect of the input equalization
and output pre-emphasis of the AD8196 is that the AD8196 can
compensate for the signal degradation of both input and output
cables; it acts to reopen a closed input data eye and transmit a
full swing HDMI signal to an end receiver. More information
on the specific performance metrics of the AD8196 can be
found in the Typical Performance Characteristics section.
The AD8196 also provides a distinct advantage in receive-type
applications because it is a fully buffered HDMI/DVI switch.
Although inverting the output pin order of the AD8196 on the
PCB requires a designer to place vias in the high speed signal
path, the AD8196 fully buffers and electrically decouples the
outputs from the inputs. Therefore, the effects of the vias placed
on the output signal lines are not seen at the input of the AD8196.
The programmable output terminations also improve signal
quality at the output of the AD8196. The PCB designer, there-
fore, has significantly improved flexibility in the placement and
routing of the output signal path with the AD8196 over other
solutions.