LM343

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
(Note 4)
                                                    LM143                                                       LM343
Supply Voltage                              g40V                                                         g34V
Power Dissipation (Note 1)         680 mW                                                   680 mW
Differential Input Voltage (Note 2) 80V                                                           68V
Input Voltage (Note 2)                  ±40V                                                       ±34V
Operating Temperature Range -55 to +125                                       0 to +70
Storage Temperature Range    -65 to +150                                      -65 to +150
Output Short Circuit Duration       5 seconds                                                5 seconds
Lead Temperature (Soldering, 10 sec.)300                                                    300
ESD rating to be determined.

The LM343 is a general purpose high voltage operational amplifier featuring operation to g40V, complete input overvoltage protection up to g40V and input currents comparable 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. Operating 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 environments 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.