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參數(shù)資料
| 型號： | EL2250CN |
| 廠商： | ELANTEC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 125MHz Single Supply Dual/Quad Op Amps |
| 中文描述： | 2 CHANNEL, VIDEO AMPLIFIER, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 419K |
| 代理商： | EL2250CN |
12
FN7061.2
June 7, 2005
Short Circuit Current Limit
The EL2250/EL2450 have internal short circuit protection
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 dissipation could easily
increase such that the part will be destroyed. Maximum
reliability is maintained if the output current never exceeds
±90mA. A heat sink may be required to keep the junction
temperature below absolute maximum when an output is
shorted indefinitely.
Power Dissipation
With the high output drive capability of the EL2250/EL2450,
it is possible to exceed the 150°C Absolute Maximum
junction temperature under certain load current conditions.
Therefore, it is important to calculate the maximum junction
temperature for the application to determine if power-supply
voltages, load conditions, or package type need to be
modified for the EL2250/EL2450 to remain in the safe
operating area.
The maximum power dissipation allowed in a package is
determined according to [1]:
where:
T
JMAX
= Maximum Junction Temperature
T
AMAX
= Maximum Ambient Temperature
θ
JA
= Thermal Resistance of the Package
PD
MAX
= 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
V
S
= Total Supply Voltage
I
SMAX
= Maximum Supply Current per amplifier
V
OUT
= Maximum Output Voltage of the Application
R
L
= Load Resistance tied to Ground
If we set the two PD
MAX
equations, [1] & [2], equal to each
other, and solve for V
S
, we can get a family of curves for
various loads and output voltages according to [3]:
Figures 3 through 6 below show total single supply voltage
V
S
vs. R
L
for various output voltage swings for the PDIP and
SO packages. The curves assume WORST CASE
conditions of T
A
= +85°C and I
S
= 6.5mA per amplifier.
FIGURE 2.
PD
MAX
T
--------------------------------------------
T
JA
–
=
PD
MAX
N
V
s
I
SMAX
V
S
V
OUT
–
(
)
V
L
---------------
×
+
×
×
=
V
S
R
---------------------------------------------------------------
------------------------------------------------------------------------------------------
T
IS
T
R
L
–
(
)
×
V
OUT
(
)
+
V
OUT
+
=
EL2250, EL2450
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EL2250CS | 功能描述:IC OP AMP VIDEO 125MHZ LP 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| EL2250CS-T13 | 功能描述:IC OP AMP DUAL 125MHZ 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| EL2250CS-T7 | 功能描述:IC OP AMP VIDEO 125MHZ LP 8-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標準包裝:1,000 系列:- 應用:驅動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| EL2250CSZ | 功能描述:高速運算放大器 EL2250CSZ 100 MHZ DL OP AMP SNGL SUPY RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| EL2250CSZ-T13 | 功能描述:高速運算放大器 EL2250CSZ 100 MHZ DL OP AMP SNGL SUPY RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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