參數(shù)資料
型號: THS4012EVM
廠商: Texas Instruments, Inc.
英文描述: 290-MHz LOW-DISTORTION HIGH-SPEED AMPLIFIERS
中文描述: 290 - MHz的低失真高速放大器
文件頁數(shù): 22/30頁
文件大小: 439K
代理商: THS4012EVM
THS4011, THS4012
290-MHz LOW-DISTORTION HIGH-SPEED AMPLIFIERS
SLOS216B – JUNE 1999 – FEBRUARY 2000
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
general PowerPAD design considerations (continued)
The actual thermal performance achieved with the THS401xDGN in its PowerPAD package depends on the
application. In the example above, if the size of the internal ground plane is approximately 3 inches
×
3 inches,
then the expected thermal coefficient,
θ
JA
,
is
about 58.4 C/W. For comparison, the non-PowerPAD version of
the THS401x IC (SOIC) is shown. For a given
θ
JA
, the maximum power dissipation is shown in Figure 35 and
is calculated by the following formula:
PD
TMAX–TA
JA
Where:
P
D
T
MAX
= Absolute maximum junction temperature (150
°
C)
T
A
= Free-ambient air temperature (
°
C)
θ
JA
=
θ
JC
+
θ
CA
θ
JC
= Thermal coefficient from junction to case
θ
CA
= Thermal coefficient from case to ambient air (
°
C/W)
= Maximum power dissipation of THS401x IC (watts)
DGN Package
θ
JA = 58.4
°
C/W
2 oz. Trace And Copper Pad
With Solder
DGN Package
θ
JA = 158
°
C/W
2 oz. Trace And
Copper Pad
Without Solder
SOIC Package
High-K Test PCB
θ
JA = 98
°
C/W
TJ = 150
°
C
SOIC Package
Low-K Test PCB
θ
JA = 167
°
C/W
2
1.5
1
0
–40
–20
0
20
40
M
2.5
3
MAXIMUM POWER DISSIPATION
vs
FREE-AIR TEMPERATURE
3.5
60
80
100
0.5
TA – Free-Air Temperature –
°
C
NOTE A: Results are with no air flow and PCB size = 3”
×
3”
Figure 35. Maximum Power Dissipation vs Free-Air Temperature
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.
相關(guān)PDF資料
PDF描述
THS4021D 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
THS4021DGN 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
THS4021EVM 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
THS4022D 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
THS4022DGN 350-MHz LOW-NOISE HIGH-SPEED AMPLIFIERS
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THS4012IDG4 功能描述:高速運(yùn)算放大器 Dual 290MHz 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
THS4012IDGN 功能描述:高速運(yùn)算放大器 Dual 290MHz 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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THS4012IDGNR 功能描述:高速運(yùn)算放大器 290-MHz Dual Lo-Dist Voltage-Feedback 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