7
"The technology of the
receiver also defines the
mechanical structure
of the LiDAR system-
hence, its reliability,
size, and power
consumption. Multipixel
photon counter-like
sensors enable Flash-
type LiDAR systems
and discard some of the
problems that come up
with mechanical LiDAR
systems."
Giray Kömürcü
Chief Design Engineer, TUBITAK
Chapter One: Solving Key Design Challenges
To solve these problems, the TIA in the receiver signal chain is critical to maximizing signal
chain integrity and minimizing power requirements while delivering real-time information.
To balance speed while minimizing noise, Maxim TIAs:
• Offer bandwidth options of 160 MHz and 490 MHz—the latter being the highest in the
industry, amplifying pulses of just a few nanoseconds in duration.
• Allow dynamic-range adjustments using pin-selectable transimpedance values of 25 kΩ
and 50 kΩ.
• Provide selectable gain, which allows for increased dynamic range of input current and
may eliminate the need for another amplification stage later in the signal chain.
bandwidth transimpedance amplifier (TIA). Using a high-gain TIA, however, comes with the
trade-off of increased power consumption. Here, high gain and high bandwidth work against
each other (Figure 1).
Figure 1: High gain and high bandwidth work against each other. (Source: Maxim)
