參數(shù)資料
型號: LM143
廠商: National Semiconductor Corporation
英文描述: High Voltage Operational Amplifier
中文描述: 高電壓運算放大器
文件頁數(shù): 1/12頁
文件大?。?/td> 228K
代理商: LM143
TL/H/7783
L
February 1995
LM143/LM343 High Voltage
Operational Amplifier
General Description
The LM143 is a general purpose high voltage operational
amplifier featuring operation to
g
40V, complete input over-
voltage protection up to
g
40V and input currents compara-
ble to those of other super-
b
op amps. Increased slew rate,
together with higher common-mode and supply rejection,
insure improved performance at high supply voltages. Oper-
ating characteristics, in particular supply current, slew rate
and gain, are virtually independent of supply voltage and
temperature. Furthermore, gain is unaffected by output
loading at high supply voltages due to thermal symmetry on
the die. The LM143 is pin compatible with general purpose
op amps and has offset null capability.
Application areas include those of general purpose op
amps, but can be extended to higher voltages and higher
output power when externally boosted. For example, when
used in audio power applications, the LM143 provides a
power bandwidth that covers the entire audio spectrum. In
addition, the LM143 can be reliably operated in environ-
ments with large overvoltage spikes on the power supplies,
where other internally-compensated op amps would suffer
catastrophic failure.
The LM343 is similar to the LM143 for applications in less
severe supply voltage and temperature environments.
Features
Y
Wide supply voltage range
g
4.0V to
g
40V
Y
Large output voltage swing
g
37V
g
38V
Y
Wide input common-mode range
Y
Input overvoltage protection
Full
g
40V
Y
Supply current is virtually independent of supply voltage
and temperature
Unique Characteristics
Y
Low input bias current
8.0 nA
1.0 nA
Y
Low input offset current
Y
High slew rateDessentially independent of temperature
and supply voltage
2.5V/
m
s
Y
High voltage gainDvirtually independent of resistive
loading, temperature, and supply voltage
100k min
Y
Internally compensated for unity gain
Y
Output short circuit protection
Y
Pin compatible with general purpose op amps
Connection Diagram
Metal Can Package
Top View
TL/H/7783–1
Order Number LM143H, LM143H/883
*
or LM343H
See NS Package Number H08C
*
Available per SMD
Y
7800303
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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