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LMH6678  Product Folder

Low Power 2-Channel Central-Office xDSL Line Driver
Generic P/N 6678
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LMH6678 Low Power 2-Channel Central-Office xDSL Driver 1792 Kbytes 2-Dec-03 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LMH6678LQLLP24StatusFull production N/AN/ASamples
Buy Now		1K+$2.19reel
of
1000		NS
UZXYTT
L6678LQ
17-19 weeks40000
LMH6678LQXLLP24StatusFull production N/AN/A 1K+$2.19reel
of
4500		NS
UZXYTT
L6678LQ
17-19 weeks40000

General Description

The LMH6678 is a low power 2-channel differential output driver utilizing dual current feedback op amps with a fixed gain of AV = +5.4.

The LMH6678 utilizes high integration with low power consumption to provide 580 mW at 19.8 dBm line output. The LMH6678 can also be put into a listen mode to maintain the termination for receive signals with 100 mW/Ch power dissipation.

The LMH6678 has two separate 2-bit power control inputs compatible with 3.3V CMOS for each channel that enable independent control of line status. When the drivers for both channels are shut off, power consumption drops to only 6 mW.

Thermal Shutdown function protects the IC from a shorted line fault or system over temperature.

The LMH6678 is available in a 5mm x 4mm 24-lead LLP package.

Features

AVCC1 = AVCC2 = +12V, AVDD = DVDD = +3.3V, TA = 25°C, 2/3 Power Mode, Typical values unless specified.

  • Low power consumption

    Line power PLINE = 100 mW

    580 mW/Ch

    No signal

    185 mW/Ch

    Listen mode

    100 mW/Ch

    Shutdown mode

    3 mW/Ch
  • Power Supply

    Analog (AVCC1, AVCC2)

    +12V

    Digital (DVDD, AVDD)

    +3.3V
  • Output voltage swing @ RL = 31

    Single ended

    11.5 VPP

    Differential

    23 VPP

Multi tone power ratio, f = 500 kHz

72 dB

Output current

580 mA

Thermal shutdown protection

  

5mm x 4mm LLP package

  

Low thermal resistance

36°C/W ([theatas (Thermal)]JA)

Small PCB footprint

  

Applications

  • Full rate ADSL, ADSL+, ADSL++ or G. Lite linecard
  • Remote DSLAMs
[Information as of 15-Jan-2004]

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