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參數(shù)資料
| 型號： | MP240 |
| 廠商： | APEX MICROTECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | POWER OPERATIONAL AMPLIFIER |
| 中文描述： | OP-AMP, 5000 uV OFFSET-MAX, 1.8 MHz BAND WIDTH, DMA42 |
| 封裝： | DIP-42 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 348K |
| 代理商： | MP240 |
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
5
any parasitic resistances R
P
, formed by socket and solder joints
as well as internal amplifier losses. The current limiting resistor
may not be placed anywhere in the output circuit except where
shown in Figure 2. The value of the current limit resistor can
be calculated as follows: R
LIM
= .65/I
LIMIT
BOOST OPERATION
With the boost feature the small signal stages of the amplifier
are operated at a higher supply voltages than the amplifier’s
high current output stage. +V
B
(pin 1) and -V
B
(pin 38) are con-
nected to the small signal stages. An additional 10V on the +V
B
and -V
B
pin is sufficient to allow the small signal stages to drive
the output stage into the triode region and improve the output
voltage swing for extra efficient operation when required. When
the boost feature is not needed +V
S
and -V
S
are connected to
+V
B
and -V
B
respectively. +V
B
and -V
B
must not be operated
at supply voltages less than +V
S
and -V
S
respectively.
SHUTDOWN
The output stage is turned off by applying a 5V level to HSD
(pin 8) relative to LSD (pin 7). This is a non-latching circuit. As
long as HSD remains high relative to LSD the output stage will
be turned off. LSD will normally be tied to signal ground but
LSD may float from -V
B
to +V
B
- 10V. Shutdown can be used
to lower quiescent current for standby operation or as part of
a load protection circuit.
BIAS CLASS OPTION
Normally pin 5 (Iq) is left open. But when pin 5 is connected
to pin 6 (Cc1) the quiescent current in the output stage is dis-
abled. This results in lower quiescent power, but also class
C operation of the output stage and the resulting crossover
distortion. In many applications, such as driving motors, the
distortion may be unimportant and lower standby power dis-
sipation is an advantage.
OPERATING
CONSIDERATIONS
MP240
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相關(guān)代理商/技術(shù)參數(shù) |
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