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參數(shù)資料
| 型號(hào)： | EL2170CN |
| 廠商： | INTERSIL CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 70MHz/1mA Current Mode Feedback Amplifiers |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁(yè)數(shù)： | 11/14頁(yè) |
| 文件大?。?/td> | 344K |
| 代理商： | EL2170CN |
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11
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 resistor will
decouple the EL2170, EL2270, and EL2470 from the cable
and allow extensive capacitive drive. However, other
applications may have high capacitive loads without a back-
termination resistor. In these applications, a small series
resistor (usually between 5
and 50
) can be placed in
series with the output to eliminate most peaking. The gain
resistor (R
G
) 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 feedback resistor (R
F
) to reduce the
peaking.
Current Limiting
The EL2170, EL2270, and EL2470 have no internal current-
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 EL2170, EL2270,
and EL2470, it is possible to exceed the 150°C Absolute
Maximum junction temperature under certain very high load
current conditions. Generally speaking, when R
L
falls below
about 25
, it is important to calculate the maximum junction
temperature (T
JMAX
) for the application to determine if
power-supply voltages, load conditions, or package type
need to be modified for the EL2170, EL2270, and EL2470 to
remain in the safe operating area. These parameters are
calculated as follows [1]:
where:
T
MAX
= Maximum ambient temperature
θ
JA
= Thermal resistance of the package
n = Number of amplifiers in the package
PD
MAX
= Maximum power dissipation of each amplifier in
the package
PD
MAX
for each amplifier can be calculated as follows [2]:
where:
V
S
= Supply voltage
I
SMAX
= Maximum supply current of 1 amplifier
V
OUTMAX
= Maximum output voltage of the application
R
L
= Load resistance
Typical Application Circuits
T
JMAX
T
MAX
Θ
JA
n
PD
MAX
×
×
(
)
+
=
PD
MAX
2
(
V
S
I
SMAX
)
V
S
(
- V
OUTMAX
)
V
L
----------------------------
×
+
×
×
=
INVERTING 200mA OUTPUT CURRENT
DISTRIBUTION AMPLIFIER
FAST-SETTLING PRECISION AMPLIFIER
EL2170, EL2270, EL2470
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EL2170CS | 70MHz/1mA Current Mode Feedback Amplifiers |
| EL2170CS-T13 | 70MHz/1mA Current Mode Feedback Amplifiers |
| EL2170CS-T7 | 70MHz/1mA Current Mode Feedback Amplifiers |
| EL2171CN | 150MHz Current Feedback Amplifier |
| EL2071 | 150MHz Current Feedback Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EL2170CS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| EL2170CS-T13 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:70MHz/1mA Current Mode Feedback Amplifiers |
| EL2170CS-T7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:70MHz/1mA Current Mode Feedback Amplifiers |
| EL2170CW | 制造商:ELANTEC 制造商全稱:ELANTEC 功能描述:70 MHz/1 mA Current Mode Feedback Amplifiers |
| EL2170CW-T3 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:70MHz/1mA Current Mode Feedback Amplifiers |
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