Purchase LMH6678, In-stock LMH6678 From SeekIC.
Part Number: LMH6678
Description: The LMH6678 is a low power 2-channel differential output driver utilizing dual current feedback op amp...
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LMH6678
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DataSheet
General Description
LMH6678 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.
The rmal 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.
LMH6678 Maximum Ratings
ESD Tolerance
Human Body Model ...............................................................2KV (Note 2)
Machine Model ....................................................................200V (Note 8)
VIN Differential ..................................................................................±3V
Supply Voltages
AVCC1 AGND or AVCC2
AGND ............................................................................................+13.2V
DVDD DGND ................................................................................+3.6V
AVDD AGND ................................................................................+3.6V
DGND − AGND ...............................................................................±0.2V
AVCC1 AVCC2 ............................................................................±0.2V
AVDD DVDD ...............................................................................±0.2V
Voltage at Input Pin
Analog Input .........................................................AVCC1 (AVCC2) +0.8V,
..............................................................................................AGND −0.8V
Digital Control Input .............................................................DVDD +0.8V,
..............................................................................................DGND −0.8V
Soldering Information
Infrared or Convection (20 sec.) .....................................................235
Storage Temperature Range ..........................................−65 to +150
Junction Temperature (Note 4) .....................................................+150
Human Body Model ...............................................................2KV (Note 2)
Machine Model ....................................................................200V (Note 8)
VIN Differential ..................................................................................±3V
Supply Voltages
AVCC1 AGND or AVCC2
AGND ............................................................................................+13.2V
DVDD DGND ................................................................................+3.6V
AVDD AGND ................................................................................+3.6V
DGND − AGND ...............................................................................±0.2V
AVCC1 AVCC2 ............................................................................±0.2V
AVDD DVDD ...............................................................................±0.2V
Voltage at Input Pin
Analog Input .........................................................AVCC1 (AVCC2) +0.8V,
..............................................................................................AGND −0.8V
Digital Control Input .............................................................DVDD +0.8V,
..............................................................................................DGND −0.8V
Soldering Information
Infrared or Convection (20 sec.) .....................................................235
Storage Temperature Range ..........................................−65 to +150
Junction Temperature (Note 4) .....................................................+150
LMH6678 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 = 31Ω
- 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 (JA)
`Small PCB footprint
`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 = 31Ω
- 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 (JA)
`Small PCB footprint
LMH6678 Typical Application
·Full rate ADSL, ADSL+, ADSL++ or G. Lite linecard
·Remote DSLAMs
·Remote DSLAMs
LMH6678 Connection Diagram
LMH6678
PDF/DataSheet Download
- Datasheet: LMH6678
- File Size: 1835292 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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