Datasheet
Introduction
1-2
1.1 Introduction
The board can be used to evaluate device parameters while acting as a guide
for high-speed board layout. The evaluation board can be used as daughter
boards that are plugged into new or existing designs. Since the TLK1501
operates over a wide range of frequencies, the designers will need to optimize
their design for the frequency of interest. Additionally, the designers may wish
to use buried transmission lines and provide additional noise attenuation and
EMI suppression to optimize their end product.
As the frequency of operation increases, the board designer must take special
care to ensure that the highest signal integrity is maintained. To achieve this,
the board’s impedance is controlled to 50 Ω for both the high-speed differential
serial and parallel data connections. In addition, impedance mismatches are
reduced by designing the component pad size to be as close as possible to
the width of the connecting transmission lines. Vias are minimized and, when
necessary, placed as close as possible to the device drivers. Since the board
contains both serial and parallel transmission lines, care was taken to control
both impedance and trace length mismatch (board skew).
Overall, the board layout is designed and optimized to support high-speed
operation. Thus, understanding impedance control and transmission line
effects are crucial when designing high-speed boards.
Some of the advanced features offered by this board include:
PCB (printed-circuit board) is designed for high-speed signal integrity.
Flexibility–The PCB can be configured for copper or optical interfaces.
SMA and parallel fixtures are easily connected to test equipment.
All input/output signals are accessible for rapid prototyping.
Analog and digital power planes can be supplied through separate banana
jacks for isolation or can be combined using ferrite bridging networks.
Series termination resistors provide parallel RD outputs.
Onboard capacitors provide ac-coupling of high-speed signals.
1.2 TLK1501 EVM Kit Contents
TLK1501 EVM board
TLK1501 EVM kit documentation (This document)