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LM143 LM343 High Voltage Operational Amplifier
February 1995
LM143 LM343 High Voltage
Operational Amplifier
General Description Features
The LM143 is a general purpose high voltage operational Y Wide supply voltage range g 4 0V to g 40V
amplifier featuring operation to g 40V complete input over- Y Large output voltage swing g 37V
voltage protection up to g 40V and input currents compara- Y Wide input common-mode range g 38V
ble to those of other super-b op amps Increased slew rate Y Input overvoltage protection Full g 40V
together with higher common-mode and supply rejection Y Supply current is virtually independent of supply voltage
insure improved performance at high supply voltages Oper- and temperature
ating characteristics in particular supply current slew rate
and gain are virtually independent of supply voltage and
temperature Furthermore gain is unaffected by output
Unique Characteristics
loading at high supply voltages due to thermal symmetry on
Y Low input bias current 8 0 nA
the die The LM143 is pin compatible with general purpose Y Low input offset current 1 0 nA
op amps and has offset null capability Y High slew rate essentially independent of temperature
Application areas include those of general purpose op and supply voltage 2 5V ms
amps but can be extended to higher voltages and higher Y High voltage gain virtually independent of resistive
output power when externally boosted For example when loading temperature and supply voltage 100k min
used in audio power applications the LM143 provides a Y Internally compensated for unity gain
power bandwidth that covers the entire audio spectrum In Y Output short circuit protection
addition the LM143 can be reliably operated in environ- Y Pin compatible with general purpose op amps
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
Connection Diagram
Metal Can Package
Top View
TL H 7783