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參數(shù)資料
| 型號(hào)： | EL2480CL |
| 英文描述： | 250MHz / 3mA Current Mode Feedback Amplifiers |
| 中文描述： | 250MHz的/ 3mA的電流模式反饋放大器 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 661K |
| 代理商： | EL2480CL |
12
EL2180C/EL2280C/EL2480C-Preliminary
250MHz / 3mA Current Mode Feedback Amplifiers
E
L
21
80
C
/E
L
22
80
C
/E
L
24
80
C
-P
re
lim
in
ar
y
output drive of each EL2280C and EL2480C amplifier
allows swings of ±2.5V into 50
loads.
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is
always recommended for reflection-free performance.
For those applications, the back-termination series resis-
tor will decouple the EL2180C/EL2280C/EL2480C
from the cable and allow extensive capacitive drive.
However, other applications may have high capacitive
loads without a back-termination resistor. In these appli-
cations, a small series resistor (usually between 5
and
50
) can be placed in series with the output to eliminate
most peaking. The gain resistor (RG) can then be chosen
to make up for any gain loss which may be created by
this additional resistor at the output. In many cases it is
also possible to simply increase the value of the feed-
back resistor (RF) to reduce the peaking.
Current Limiting
The EL2180C/EL2280C/EL2480C have no internal cur-
rent-limiting circuitry. If any output is shorted, it is
possible to exceed the Absolute Maximum Ratings for
output current or power dissipation, potentially resulting
in the destruction of the device.
Power Dissipation
With the high output drive capability of the
EL2180C/EL2280C/EL2480C, it is possible to exceed
the 150°C Absolute Maximum junction temperature
under certain very high load current conditions. Gener-
ally speaking, when RL falls below about 25, it is
important to calculate the maximum junction tempera-
ture (TJMAX) for the application to determine if power-
supply voltages, load conditions, or package type need
to be modified for the EL2180C/EL2280C/EL2480C to
remain in the safe operating area. These parameters are
calculated as follows:
where:
TMAX = Maximum Ambient Temperature
θJA = Thermal Resistance of the Package
n = Number of Amplifiers in the Package
PDMAX = Maximum Power Dissipation of Each
Amplifier in the Package
PDMAX for each amplifier can be calculated as follows:
where:
VS = Supply Voltage
ISMAX = Maximum Supply Current of 1 Amplifier
VOUTMAX = Maximum Output Voltage of the
Application
RL = Load Resistance
TJMAX
TMAX ΘJA n PDMAX
×
()
+
=
PDMAX
2
(
VS ISMAX )
VS
(
VOUTMAX )
VOUTMAX
RL
----------------------------
×
–
+
×
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EL2480CL-T13 | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:250MHz / 3mA Current Mode Feedback Amplifiers |
| EL2480CL-T7 | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:250MHz / 3mA Current Mode Feedback Amplifiers |
| EL2480CN | 制造商:Rochester Electronics LLC 功能描述:250 MHZ QUAD CMF OP AMP, 1 5 V - Bulk |
| EL2480CS | 功能描述:IC OP AMP QUAD LP 250MHZ 14-SOIC RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
| EL2480CS-T13 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:250MHz/3mA Current Mode Feedback Amplifier |
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