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ADI | Industry 4.0 and Beyond
Low Latency Solutions
Analog Devices has recently released two new Industrial Ethernet PHYs designed to operate
reliably in harsh industrial conditions over extended ambient temperature ranges up to 105°C
and with industry-leading power and latency specifications. The ADIN1300 and ADIN1200
were developed specifically to address the challenges outlined here and make ideal
choices for industrial applications. With the fido5000 real-time
Ethernet, multiprotocol, embedded 2-port switch, Analog Devices
enables solutions for deterministic time-sensitive applications.
The latencies introduced by the PHY and switch are listed in Table 1,
assuming that the receive buffer analysis is destination address based
and assuming a 100Mbps network.
As an example, aggregating these delays up to a 7-axis line network and
including the clocking of the full payload into the final node (3a in Figure
4), the total transmission delay becomes
where the 58ns × 80ns represents the remaining 58-byte payload after
the preamble and destination address bytes have been read.
MOVING TO GIGABIT ETHERNET
DRAMATICALLY REDUCES THE
IMPACT OF BANDWIDTH DELAY BUT
INCREASES THE PROPORTION OF
OVERALL LATENCY
INTRODUCED BY THE SWITCH
AND PHY COMPONENTS.
Table 1: PHY and Switch Latencies (Source: Analog Devices Inc.)
ADN465x 5kV & 3.75kV
LVDS Gigabit Isolators
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