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LM348N

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QUADRUPLE OPERATIONAL AMPLIFIERS

Input Offset Voltage: 6 mV
Brand: National Semiconductor
DateCode: 00+
Package / Case: DIP14
Power Dissipation: 0.75 W
Package Type: PDIP
Pin Count: 14
Common Mode Rejection Ratio: 70 dB
Slew Rate: 0.5 V/us
Mounting: Through Hole
Operating Temperature Classification: Commercial
Technology: Bipolar
Power Supply Requirement: Dual
Input Bias Current: 200 nA
Operating Temp Range: 0C to 70C
Dual Supply Voltage (Min): ?5 V
Dual Supply Voltage (Max): ?18 V
Rad Hardened: No
Shut Down Feature: No
Rail/Rail I/O Type: No
Power Supply Rejection Ratio: 77 dB
Voltage Gain in dB: 104.08 dB
Dual Supply Voltage (Typ): ?9/?12/?15 V
Single Supply Voltage (Min): Not Required V
Single Supply Voltage (Max): Not Required V
Single Supply Voltage (Typ): Not Required V
Number of Elements: 4
Packaging: Rail/Tube

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Web Site	Package	Brand	Est. Market Price	Description
Texas Instruments (TI)	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
STMicroelectronics (ST)	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
DigiKey	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
Mouser	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
RS America	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出

The parameters and performance indicators of this product are sourced from the internet. In case of discrepancies, please refer to the manufacturer's technical specifications!！

Product Attributes

Description: The LM348N is a low power quad operational amplifier from National Semiconductor. Features: Wide supply voltage range: 3 V to 32 V Low power consumption: 0.4 mW/amplifier Low input bias current: 0.5 nA Low input offset voltage: 2 mV High open loop gain: 100 dB High slew rate: 0.5 V/μs Low noise: 0.3 μVrms Applications: Active filters Signal conditioning Data acquisition systems Instrumentation amplifiers Motor control Sensor interface (For reference only)

Introduction:

The LM148N are quadruple, independent, high-gain, internally compensated operational amplifiers designed to have operating characteristics similar to the μA741. These amplifiers exhibit low Power supply-current drain and input bias and offset currents that are much less than those of the μA741.

op-amp symbol:

MyFang/202007/30/f_51d08dc08ecb467886bfb869e46247b5.png

Some Core Parameters:

SPECIAL FEATURES :

● μA741 Operating Characteristics

● Low Supply-Current Drain . . . 0.6mA Typ (per amplifier)

● Low Input Offset Voltage

● Low Input Offset Current

● Class AB Output Stage

● Input/Output Overload Protection

● Designed to Be Interchangeable with Industry Standard LM148N, LM248N, and LM348N

How it Uses in the work:

Internal Logic Diagram:

MyFang/202007/30/f_b61e0d1fa20a48f8ad934e798ff0e8f8.png

LM348N Pinout Connections:

MyFang/202007/30/f_3acf9c4461964860ba74856fc92bbec3.png

Absolute maximum ratings:

● Supply voltage, VCC+(seeNote1):18V

● Supply voltage, VCC–(seeNote1): –18V

● Differential input voltage, VID (seeNote2): 36V

● Input voltage, VI (either input, seeNotes1and3): –18V

● Duration of output short circuit(seeNote4): Unlimited

● Operating virtual junction temperature, TJ:150℃

● Package thermal impedance:

D package: 86℃/W

N package: 80℃/W

NS package: 76℃/W

● Package there memimpedance:

FK package: 5.61℃/W

J package: 15.05℃/W

● Casetemperaturefor60seconds:

FK package: 260℃

● Leadtemperature10seconds:

J package: 300℃

● Leadtemperature60seconds:

D, N, or package: 260℃

● Storage temperature range, Tstg: – 65℃ to 150℃

Applications:

● Signal Amplification

● Input stage emitter-coupled logic

● Switch

● Controlling of Motors and Servo Motors

QUANTITY	UNIT PRICE	PLUS UNIT PRICE	TOTAL PRICE
≥1:	US $1.43040	US $1.28736	US $1.28736
≥5:	US $1.07280	US $0.96552	US $4.82760
≥10:	US $0.64368	US $0.57931	US $5.79310
≥20:	US $0.62580	US $0.56322	US $11.26440
≥50:	US $0.60792	US $0.54713	US $27.35650
≥100:	US $0.54087	US $0.48678	US $48.67800
≥200:	US $0.52448	US $0.47203	US $94.40600
≥500:	US $0.51792	US $0.46613	US $233.06500
≥1000:	US $0.50809	US $0.45728	US $457.28000

Substitute (equivalent) Product

Product Name	Description
LM358N	Dual operational amplifier, low power, general purpose, 8-pin DIP/SOIC package.
TL074CN	Quad JFET input operational amplifier, low noise, 14-pin DIP/SOIC package.
NE5532P	Dual low noise operational amplifier, high slew rate, 8-pin DIP/SOIC package.
MC33078P	Dual operational amplifier, low power, general purpose, 16-pin DIP/SOIC package.
LM324N	Quad operational amplifier, low power, general purpose, 14-pin DIP/SOIC package.

Product Usage

The LM348N is a quad operational amplifier (op-amp) that can be used in a wide variety of analog circuits. It is particularly useful in applications that require multiple op-amps in a single package. Here are some common circuits and applications where the LM348N might be used:

Audio Amplifiers:
- Pre-amplifiers: Used to boost weak audio signals from microphones or other sources.
- Equalizers: Used to adjust the frequency response of audio signals.
Signal Conditioning:
- Filter Circuits: Used to design low-pass, high-pass, band-pass, and band-stop filters.
- Voltage Followers: Used to buffer signals without amplification, providing high input impedance and low output impedance.
Sensor Interfaces:
- Temperature Sensors: Used to amplify and condition signals from temperature sensors like thermistors or RTDs.
- Pressure Sensors: Used to amplify and condition signals from pressure sensors.
Power Supply Circuits:
- Voltage Regulators: Used in feedback loops to stabilize output voltages.
- Current Sources: Used to provide a constant current to loads.
Control Systems:
- PID Controllers: Used to implement proportional-integral-derivative control algorithms.
- Servo Motor Control: Used to amplify and condition signals for motor control.
Data Acquisition Systems:
- Analog-to-Digital Converters (ADCs): Used to condition signals before they are digitized by ADCs.
- Digital-to-Analog Converters (DACs): Used to buffer and amplify signals from DACs.
Educational and Experimental Circuits:
- Oscilloscope Probes: Used to amplify and condition signals for oscilloscopes.
- Test Equipment: Used in various test and measurement devices.
Medical Devices:
- Biopotential Amplifiers: Used to amplify and condition signals from electrodes in ECG, EEG, and EMG devices.
Industrial Automation:
- Process Control: Used in feedback loops to control industrial processes.
- Signal Isolation: Used in isolation amplifiers to protect sensitive circuits from high-voltage signals.

The LM348N is a versatile component that can be found in many different types of circuits where multiple op-amps are needed. Its wide operating voltage range (±1.5V to ±18V) and low power consumption make it suitable for a variety of applications.

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LM348N QUADRUPLE OPERATIONAL AMPLIFIERS

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Alternate Names

LM348N

LM348N has several brands around the world that may have alternate names for LM348N due to regional differences or acquisition. LM348N may also be known as the following names:

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