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參數(shù)資料
| 型號： | THS6072D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-POWER ADSL DIFFERENTIAL RECEIVER |
| 中文描述： | 低功耗寬帶差分接收機(jī) |
| 文件頁數(shù)： | 10/24頁 |
| 文件大小： | 385K |
| 代理商： | THS6072D |
THS6072
LOW-POWER ADSL DIFFERENTIAL RECEIVER
SLOS290A – FEBRUARY 2000 – REVISED APRIL 2000
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
ADSL line noise
Per ANSI T1.413, the noise power spectral density for an ADSL line is –140 dBm/
√
Hz. This results in a voltage
noise requirement of less than 31.6 nV/
√
Hz for the receiver in an ADSL system with a 1:1 transformer ratio.
Noise Power Spectral Density = –140 dBm/
√
Hz
Power = 1e–17
×
1 Hz = 0.01 fW
Assume: R
L
= 100
V
noise
=
√
(P
×
R) =
√
(0.01 fW
×
100
) = 31.6 nV/
√
Hz
For ADSL systems that use a 1:2 transformer ratio, such as central office line cards, the voltage noise
requirement for the receiver is lowered to 15.8 nV/
√
Hz.
TRANSFORMER
RATIO
Vnoise ON LINE
1:1
31.6 nV/
√
Hz
15.8 nV/
√
Hz
1:2
The THS6072 was designed to operate with 10 nV/
√
Hz voltage noise, exceeding the noise requirements for
an ADSL system operating with 1:1 or 1:2 transformer ratios. For systems where a voltage noise of less than
10 nV/
√
Hz voltage noise is required, see the THS6062 low noise ADSL receiver which operates with a voltage
noise level of 1.6 nV/
√
Hz.
minimizing distortion
One way to minimize distortion is to increase the load impedance seen by the amplifier, thereby reducing the
currents in the output stage. This will help keep the output transistors in their linear amplification range and will
also reduce the heating effects. This can be seen in Figure 10 through Figure 13, which show a 1-k
load
distortion is much better than a 150-
load.
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PDF描述 |
|---|---|
| THS6072DGN | LOW-POWER ADSL DIFFERENTIAL RECEIVER |
| THS6072EVM | LOW-POWER ADSL DIFFERENTIAL RECEIVER |
| THS6072IDGN | LOW-POWER ADSL DIFFERENTIAL RECEIVER |
| THS6132RGW | HIGH EFFICIENCY CLASS - G ADSL LINE DRIVER |
| THS6132VFPR | HIGH EFFICIENCY CLASS - G ADSL LINE DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6072DGN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER ADSL DIFFERENTIAL RECEIVER |
| THS6072EVM | 功能描述:放大器 IC 開發(fā)工具 THS6072 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| THS6072ID | 功能描述:高速運(yùn)算放大器 High Speed RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6072IDG4 | 功能描述:高速運(yùn)算放大器 Low-Pwr ADSL Diff Receiver RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6072IDGN | 功能描述:高速運(yùn)算放大器 Low-Power ADSL Diff Receiver RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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