6351

- 741 op amp operating characteristics
- Low supply current drain                                        0.6mA/Amplifier
- Class AB output stage-no crossover distortion
- Pin compatible with the LM124
- Low input offset voltage                                         1mV
- Low input offset current                                          4nA
- Low input bias current                                            30nA
- Gain bandwidth product (Unity Gain)                      1.0Mhz
- High degree of isolation between amplifiers           120dB
- Overload protection for inputs and outputs

Supply Voltage
                                                              + 22V
Differential Input Voltage
                                                              + 44V
Output Short Circuit Duration
(Note 2)
                                                              Continuous
Power Dissipation
(Note 3)
   (Pd at 25 C)                                        1100 mW
Maximum Junction Temperature (TjMAX)
                                                              150 C
Operating Temperature Range
                                                              -55 C < TA < +125 C
Storage Temperature Range
                                                              -65 C to +150 C
Lead Temperature (Soldering, 10 seconds)
                                                              300 C
Thermal Resistance
ThetaJA
   CERDIP (Still Air)                                 103 C/W
   CERDIP (500LF/Min Air flow)                52 C/W
   LCC    (Still Air)                                     90 C/W
   LCC    (500LF/Min Air flow)                   66 C/W
ThetaJC
   CERDIP                                                19 C/W
   LCC                                                      21 C/W
ESD Tolerance
(Note 4)
                                                               500V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test  conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.

Note 2: Any amplifier outputs can be shorted to ground indefinitely however, more that one should not be simultaneously shorted as the maximum junction temperature will be exceeded.

Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum available power dissipation at any temperature is Pdmax = (TjMAX - TA) ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower. 

Note 4: Human body model, 1.5K Ohms in series with 100pF.

The LM148 is a true quad LM741. It consists of four independent, high gain, internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar LM741 operational amplifier.In addition the total supply current for all four amplifiers is comparable to the supply current of a single LM741 type op amp. Other features of LM148 include input offset currents and input bias current which are much less than those of a standard LM741. Also, excellent isolation between amplifiers LM148 has been achieved by independently biasing each amplifier and using layout techniques which minimize thermal coupling.

The LM148 can be used anywhere multiple LM741 or LM1558 type amplifiers are being used and in applications where amplifier matching or high packing density is required.