Le87281
G.Fast Single Channel Line Driver
The Le87281 is a single channel differential amplifier designed to drive G.Fast transmission signals as well as VDSL2 and ADSL2+ signals
w
ith very low power dissipation. The Le87281 contains a pair of wideband amplifiers designed with Microsemi’s HV15 Bipolar SOI process
for low power consumption.
The line driver gain is fixed internally. The amplifiers are powered from a single supply.
The device can be programmed to one-of-three preset Bias levels or to impedance controlled Disable or Standby states. The control pins
r
espond to input levels that can be generated with a standard tri-state GPIO.
Simplified Block Diagram
Features & Benefit
s
• Supports high frequency G.Fast transmission
• Supports VDSL2 and ADSL2+ operation
• Very low power dissipation
◦Class AB operation
• 5 programmable states
• No external gain resistors required
• Small footprint package
◦16-pin (4 mm x 4 mm) QFN
• RoHS compliant
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