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參數(shù)資料
| 型號： | EL2357C |
| 英文描述： | Dual, 500MHz Triple, Multiplexing Amplifiers; Temperature Range: -40°C to 85°C; Package: 48-QFN |
| 中文描述： | 125 MHz的單電源運算放大器夾緊三 |
| 文件頁數(shù)： | 10/21頁 |
| 文件大小： | 1617K |
| 代理商： | EL2357C |
18
EL2257C/EL2357C
125 MHz Single Supply, Clamping Op Amps
E
L
2257C/E
L2357C
required to keep the junction temperature below abso-
lute maximum when an output is shorted indefinitely.
Power Dissipation
W ith t h e high output dr i v e c a pabil i t y of t h e
EL2257C/EL2357C, 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
EL2257C/EL2357C to remain in the safe operating area.
The maximum power dissipation allowed in a package is
determined by:
where:
TJMAX = Maximum Junction Temperature
TAMAX = Maximum Ambient Temperature
θ
JA = 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:
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] and [2], equal to
each other, and solve for VS, we can get a family of
curves for various loads and output voltages according
to:
Figures 11 and 12 below show total single supply volt-
age VS vs. RL for various output voltage swings for the
PDIP and SOIC packages. The curves assume WORST
CASE conditions of TA = +85°C and IS = 6.5 mA per
amplifier.
PD
MAX
T
JM AX
T
AMAX
–
θ
JA
----------------------------------------------
=
PD
MAX
NV
S
I
SM AX
V
S
V
OUT
–
()
V
OUT
R
L
----------------
×
+
×
=
V
S
R
L
T
JM AX
T
AMAX
–
()
×
N
θ
JA
×
-----------------------------------------------------------------V
OUT
()
2
+
I
S
R
L
×
() V
OUT
+
-----------------------------------------------------------------------------------------------
=
EL2257 Single Supply Voltage
vs. RLoad for Various
VOUT and Packages
Figure 11.
EL2357 Single Supply Voltage
vs. RLoad for Various
VOUT and Packages
Figure 12.
相關PDF資料 |
PDF描述 |
|---|---|
| EL2357C | 125 MHz Single Supply, Clamping Op Amps(125 MHz，單電源鉗位運算放大器) |
| EL2360C | Triple 130 MHz Current Feedback Amplifier |
| EL2360CN | Triple 130 MHz Current Feedback Amplifier |
| EL2360CS | Triple 130 MHz Current Feedback Amplifier |
| EL2386 | 250 MHz Triple Current Feedback Amp w/Disable |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EL2357CN | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| EL2357CS | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:125 MHz Single Supply, Clamping Op Amps |
| EL2357CS-02 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| EL2360 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Triple 130MHz Current Feedback Amplifier |
| EL2360C | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:Triple 130 MHz Current Feedback Amplifier |
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