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參數(shù)資料
| 型號(hào)： | LMH6678LQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Low Power 2-Channel Central-Office xDSL Driver |
| 中文描述： | DUAL LINE DRIVER, QCC24 |
| 封裝： | 5 X 4 MM, LLP-24 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大小： | 1792K |
| 代理商： | LMH6678LQ |
LMH6678
Low Power 2-Channel Central-Office xDSL Driver
General Description
The LMH6678 is a low power 2-channel differential output
driver utilizing dual current feedback op amps with a fixed
gain of A
V
= +5.4.
The LMH6678 utilizes high integration with low power con-
sumption 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 dis-
sipation.
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
AV
= AV
= +12V, AV
= DV
= +3.3V, T
A
= 25C,
2/3 Power Mode, Typical values unless specified.
n
Low power consumption
— Line power P
LINE
= 100 mW
— No signal
— Listen mode
— Shutdown mode
n
Power Supply
— Analog (AV
CC1
, AV
CC2
)
— Digital (DV
DD
, AV
DD
)
n
Output voltage swing
@
R
L
= 31
— Single ended
— Differential
n
Multi tone power ratio, f = 500 kHz
n
Output current
n
Thermal shutdown protection
n
5mm x 4mm LLP package
n
Low thermal resistance
n
Small PCB footprint
580 mW/Ch
185 mW/Ch
100 mW/Ch
3 mW/Ch
+12V
+3.3V
11.5 V
PP
23 V
PP
72 dB
580 mA
36C/W (
θ
JA
)
Application
n
Full rate ADSL, ADSL+, ADSL++ or G. Lite linecard
n
Remote DSLAMs
Block Diagram
20084037
December 2003
L
2003 National Semiconductor Corporation
DS200840
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMH6678LQX | Low Power 2-Channel Central-Office xDSL Driver |
| LMH6678 | Low Power 2-Channel Central-Office xDSL Driver |
| LMH6704MA | 650 MHz Progammable Gain Buffer with Disable |
| LMH6704MAX | 650 MHz Progammable Gain Buffer with Disable |
| LMH6704MF | 650 MHz Progammable Gain Buffer with Disable |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMH6678LQX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power 2-Channel Central-Office xDSL Driver |
| LMH6682 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:190MHz Single Supply, Dual and Triple Operational Amplifiers |
| LMH6682MA | 制造商:Texas Instruments 功能描述:OP Amp Dual Volt Fdbk ±6V/12V 8-Pin SOIC N Rail 制造商:Texas Instruments 功能描述:AMP, VIDEO DUAL, SMD, SOIC8, 6682 |
| LMH6682MA/NOPB | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMH6682MAX | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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