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The LM148 series is a true quad 741. 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 741 operational amplifier. In addition the total supply current for all four amplifiers is comparable to the supply current of a single 741 type op amp. Other features include input offset currents and input bias current which are much less than those of a standard 741. Also, excellent isolation between amplifiers has been achieved by independently biasing each amplifier and using layout techniques which minimize thermal coupling.
The LM148 can be used anywhere multiple 741 or 1558 type amplifiers are being used and in applications where amplifier matching or high packing density is required. For lower power refer to LF444.
Reliability Metrics
Part Number
Process
EFR Reject
EFR Sample Size
PPM
LTA Rejects
LTA Device Hours
FITS
MTTF (Hours)
LM348M
SLM
0
42786
0
0
3352500
2
951281028
LM348MX
SLM
0
42786
0
0
3352500
2
951281028
LM348N
SLM
0
42786
0
0
3352500
2
951281028
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Design Tools
Title
Size in Kbytes
Date
Amplifiers Selection Guide software for Windows
8 Kbytes
6-Mar-2007
View
If you have trouble printing or viewing PDF file(s), see Printing Problems.
More Application Notes
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Date
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306 Kbytes
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If you have trouble printing or viewing PDF file(s), see Printing Problems.
LM348 Maximum Ratings
Gain Bandwidth
1 MHz
Channels
4 Channels
Input OutputType
Not Rail to Rail
Slew Rate
0.5 Volts/usec
Supply Min
10 Volt
Supply Max
36 Volt
Offset Voltage max, 25C
6 mV
Supply Current Per Channel
0.6 mA
PowerWise Rating 2
600 uA/MHz
Max Input Bias Current
400 nA
Output Current
25 mA
Voltage Noise
60 nV/root(Hz)
Shut down
No
Special Features
Undefined
Function
Op Amp
Temperature Min
0 deg C
Temperature Max
70 deg C
View Using Catalog
LM348 Features
mA741 Operating Characteristics Low Supply Current Drain . . . 0.6 mA Typ(per amplifier) Low Input Offset Voltage Low Input Offset Current Class AB Output Stage Input/Output Overload Protection Designed to Be Interchangeable With National LM148, LM248, and LM348