ISL15110 Datasheet, PDF (1/2 Pages) Intersil Corporation – PLC MIMO Line Driver

PLC MIMO Line Driver
ISL15110
The ISL15110 is a dual port differential line driver developed for
Power Line Communication (PLC) Multi Input Multi Output
(MIMO) applications. MIMO PLC requires transmission on one or
two pairs of Phase, Neutral, and Ground wires. The device is
designed to drive heavy line loads, while maintaining a high level
of linearity required in OFDM PLC modem links. With 15.5dBm of
total MIMO transmit signal power (12.5dBm per each pair) into a
50Ω line load, the drivers deliver -50dB average MTPR distortion
across the output spectrum.
Each of the two differential drivers has a control pin used to
enable/disable its differential output. These controls allow for
independent TDM operation of the two differential drivers, as
required in ITU-T MIMO G.hn and related standard based PLC
applications. In disable mode, the line driver output maintains a
high impedance characteristic to not affect TDM receive signal
integrity.
The ISL15110 includes an external IBIAS pin for quiescent
current flexibility. Grounding the pin in single supply designs
gives the nominal currents in the “Electrical Specifications” table
on page 6, while inserting a resistor from pin to ground can be
used to scale down the quiescent current for both ports.
The ISL15110 is available in the thermally-enhanced 20 Ld QFN
and is specified for operation over the full -40°C to +85°C
temperature range.
Features
• Dual differential drivers
• 50MHz broadband PLC G.hn
• Enable/disable control pins for TDM operation
• -50dBc average MTPR distortion
• Single supply +12V nominal operation
• Enhanced surge current handling capability
• Thermally enhanced 20 Ld QFN package
• Enable port control voltage <0.7V
• Disable port control voltage >1.7V
Applications
• Home networking over power lines
• ITU-T G.hn (G.9963) MIMO PLC
OUTB
FBB
FBA
OUTA
ENAB
+VS GND
-
-
+
+
-
-
+
+
R R _+VS R R
6.2kΩ 6.2kΩ
6.2kΩ 6.2kΩ
INB INA IBIAS INC IND
FIGURE 1. BLOCK DIAGRAM
OUTC
FBC
FBD
OUTD
ENCD
-35
-40
-45
-50
11PT RUNNING AVERAGE
-55
-60
-65
0
10M
20M
30M
40M
50M
FREQUENCY (Hz)
FIGURE 2. SISO 15.5dBm, 2MHz TO 50MHz MTPR TEST
January 31, 2013
1
FN8282.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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