參數(shù)資料
型號(hào)： THS6182DR
廠商： Texas Instruments, Inc.
英文描述： LOW-POWER DISSIPATION ADSL LINE DRIVER
中文描述： 低功耗ADSL線路驅(qū)動(dòng)器
文件頁數(shù)： 22/35頁
文件大小： 1242K
代理商： THS6182DR
www.ti.com
PD
TMAX–TA
JA
θ
JC
= Thermal coefficient from junction to case. See the Package Dissipation Ratings table.
θ
CA
= Thermal coefficient from case to ambient determined by PCB layout and construction.
Where:
P
D
T
MAX
= Absolute maximum operating junction temperature (125
°
C)
T
A
= Free-ambient air temperature (
°
C)
θ
JA
=
θ
JC
+
θ
CA
= Maximum power dissipation of THS6182 (watts)
GENERAL CONFIGURATIONS
A common error for the first-time CFB user is to create a unity gain buffer amplifier by shorting the output directly
to the inverting input. A CFB amplifier in this configuration oscillates and is
not
recommended. The THS6182,
like all CFB amplifiers,
must
have a feedback resistor for stable operation. Additionally, placing capacitors
directly from the output to the inverting input is not recommended. This is because, at high frequencies, a
capacitor has a very low impedance. This results in an unstable amplifier and should not be considered when
using a current-feedback amplifier. Because of this, integrators and simple low-pass filters, which are easily
implemented on a VFB amplifier, have to be designed slightly differently. If filtering is required, simply place an
RC-filter at the noninverting terminal of the operational-amplifier (see
Figure 75
).
V
I
V
O
C1
+
R
G
R
F
R1
f–3dB
1
2 R1C1
VO
VI
1
RF
RG
1
sR1C1
1
THS6182
SLLS544G–SEPTEMBER 2002–REVISED NOVEMBER 2004
APPLICATION INFORMATION (continued)
More complete details of the PowerPAD installation process and thermal management techniques can be found
in the Texas Instruments Technical Brief,
PowerPAD Thermally Enhanced Package.
This document can be found
at the TI web site (www.ti.com) by searching on the key word PowerPAD. The document can also be ordered
through your local TI sales office. Refer to literature number
SLMA002
when ordering.
Figure 75. Single-Pole Low-Pass Filter
If a multiple pole filter is required, the use of a Sallen-Key filter can work very well with CFB amplifiers. This is
because the filtering elements are not in the negative feedback loop and stability is not compromised. Because of
their high slew-rates and high bandwidths, CFB amplifiers can create very accurate signals and help minimize
distortion. An example is shown in
Figure 76
.
22
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS6182DRG4 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Pwr Dissipation Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
THS6182DW 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Pwr Dissipation Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
THS6182DWEVM 功能描述:其他開發(fā)工具 THS6182DW Eval Mod RoHS:否 制造商:Parallax 產(chǎn)品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評(píng)估:ELEV-8 Quadcopter 工作電源電壓:
THS6182DWG4 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Pwr Dissipation Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
THS6182DWP 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low Pwr Dissipation Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel
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