Microchip Technology

The Le87502 is a dual channel line driver designed to work in Home Plug Alliance HPAV2 systems. Each channel can be enabled independently allowing multiple-in, multiple-out (MIMO) or single-in, single-out (SISO) operations. When each channel is enabled, the operating level can be set to Full, 90% or 80% power. The Le87502 delivers superior performance and can drive a line impedance of 100 Ohm down to 12 Ohm through a proper transformer. In addition, the Le87502 features a Standby state which forces both channels into a long-term sleep mode.

The Le87511 is a single channel line driver designed to work in home network G.hn power line communication systems. The Le87511 contains a pair of wideband amplifiers designed with Microchip's HV30 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 four preset bias levels to optimize power and performance. A disable state forces the line driver into a low-power, high impedance mode for receive transmissions.

The Le87557 device is a single channel differential amplifier designed to drive full rate VDSL2, ADSL2+, and PLC high-power signals. The Le87557 device contains a pair of wide-band amplifiers designed with Microchip’s HV15 bipolar SOI process for high-power output with low power consumption. Line driver gain is set externally to the device. The device can be powered from a single high-voltage supply or from dual supplies. The device can be programmed to one of three preset bias levels to optimize power and performance. In addition, the line driver features a power down state, which forces low-power and high-impedance mode for receive transmissions or for idle operations. The control pins respond to input levels that can be generated with a standard GPIO, but are tolerant of higher voltage logic levels. The Le87557device is available in a 16-pin (4 mm x 4 mm) QFN package with an exposed pad for enhanced thermal conductivity.

The Le87611 is a single channel differential amplifier designed to work in Home Plug Alliance HPAV2 systems with very low power dissipation. The Le87611 contains a pair of wideband amplifiers designed with Microchip'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 respond to input levels that can be generated with a standard tri-state GPIO.

The Le88010 VoicePort SLAC device, in combination with an analog Data Access Arrangement (DAA) such as the LITELINK DAA from LittelFuse, implements all the voice functions necessary to properly terminate and monitor the customer premises side of a PSTN line and provide linear or G.711 A- or µ-Law encoded voice output over a standard PCM or GCI highway. The Le88010 device is ideal for use in voice enabled DSL modems that implement lifeline POTS and support PBX functionality. This device reduces system level cost, space, and power by achieving a high level of voice integration and adds programmability of transmission and signalling features. Designers benefit by having a simple, cost effective, low power and dense, interface design without sacrificing features or functionality.