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参数资料
| 型号： | EL2450CS |
| 元件分类： | 运算放大器 |
| 英文描述： | 125MHz Single Supply Dual/Quad Op Amps |
| 中文描述： | 125MHz的单电源双/四路运算放大器 |
| 文件页数： | 4/17页 |
| 文件大小： | 595K |
| 代理商： | EL2450CS |
12
EL2250C, EL2450C
125MHz Single Supply Dual/Quad Op Amps
E
L
22
50
C
,E
L
24
50
C
Short Circuit Current Limit
The EL2250C/EL2450C have internal short circuit pro-
tection circuitry that protect it in the event of its output
being shorted to either supply rail. This limit is set to
around 100mA nominally and reduces with increasing
junction temperature. It is intended to handle temporary
shorts. If an output is shorted indefinitely, the power dis-
sipation could easily increase such that the part will be
destroyed. Maximum reliability is maintained if the out-
put current never exceeds ±90mA. A heat sink may be
required to keep the junction temperature below abso-
lute maximum when an output is shorted indefinitely.
Power Dissipation
With the high output drive capability of the
EL2250C/EL2450C, it is possible to exceed the 150°C
Absolute Maximum junction temperature under certain
load current conditions. Therefore, it is important to cal-
culate the maximum junction temperature for the
application to determine if power-supply voltages, load
conditions, or package type need to be modified for the
EL2250C/EL2450C to remain in the safe operating area.
The maximum power dissipation allowed in a package is
determined according to [1]:
where:
TJMAX = Maximum Junction Temperature
TAMAX = Maximum Ambient Temperature
θJA = Thermal Resistance of the Package
PDMAX = Maximum Power Dissipation in the Package.
The maximum power dissipation actually produced by
an IC is the total quiescent supply current times the total
power supply voltage, plus the power in the IC due to the
load, or [2]
where:
N = Number of amplifiers
VS = Total Supply Voltage
ISMAX = Maximum Supply Current per amplifier
VOUT = Maximum Output Voltage of the Application
RL = Load Resistance tied to Ground
If we set the two PDMAX equations, [1] & [2], equal to
each other, and solve for VS, we can get a family of
curves for various loads and output voltages according
to [3]:
Figure 1.
Figure 2.
PDMAX
TJMAX TAMAX
–
θ
JA
---------------------------------------------
=
PDMAX
NVs ISMAX
VS VOUT
–
()
VOUT
RL
---------------
×
+
×
×
=
VS
RL
TJMAX TAMAX
–
()
×
N
θ
JA
×
----------------------------------------------------------------
VOUT
()
+
ISRL
×
() VOUT
+
-------------------------------------------------------------------------------------------
=
相关PDF资料 |
PDF描述 |
|---|---|
| EL2450CS-T13 | 125MHz Single Supply Dual/Quad Op Amps |
| EL2450CS-T7 | 125MHz Single Supply Dual/Quad Op Amps |
| EL2450C | 125 MHz Single Supply Quad Op Amps(125 MHz，单电源四路运算放大器) |
| EL2460CN | Dual/Quad 130 MHz Current Feedback Amplifiers |
| EL2460CS | Dual/Quad 130 MHz Current Feedback Amplifiers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EL2450CS-T13 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:125MHz Single Supply Dual/Quad Op Amps |
| EL2450CS-T7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| EL2460 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual/Quad 130MHz Current Feedback Amplifiers |
| EL2460CN | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual/Quad 130MHz Current Feedback Amplifiers |
| EL2460CS | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Dual/Quad 130MHz Current Feedback Amplifiers |
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