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What is LM2902N and How Does it Work?

FREE-SKY (HK) ELECTRONICS CO.,LIMITED / 07-22 18:47

Many electronic systems need to strengthen, compare, filter, or condition small analog signals before those signals can be used by other circuits. The LM2902N is a low-power quad operational amplifier from Texas Instruments that provides four independent op-amps in one 14-pin package. It can work from a single or split power supply, sense inputs close to ground, and operate across a wide temperature range. This guide explains the LM2902N specifications, internal operation, circuit connections, gain calculations, practical amplifier circuits, and more.


Catalog

1. LM2902N Op-Amp IC Basics
2. LM2902N Pinout and CAD Models
3. LM2902N Technical Specifications
4. LM2902N Features and Advantages
5. How Does the LM2902N Work Internally
6. Understanding the LM2902N Input and Output Limits
7. How to Use the LM2902N Op-Amp
8. LM2902N Circuit Design and Gain Calculations
9. Practical LM2902N Application Circuits
10. LM2902N vs Similar Operational Amplifiers
11. Alternatives and Replacements
12. Mechanical Dimensions
LM2902N Op-Amp IC

LM2902N Op-Amp IC Basic

The LM324N

4
3–32 V or ±1.5–±16 V
1 MHz
Bipolar
Similar pinout with a wider supply range but a narrower 0°C to +70°C rating

LM2902B
4
3–36 V or ±1.5–±18 V
1.2 MHz
Bipolar
Newer drop-in option with improved offset, EMI filtering, and temperature performance
LM2904N
2
3–26 V or ±1.5–±13 V
1 MHz
Bipolar
Dual-channel version with a similar temperature range
TL074
4
Typically 7–36 V
3 MHz
JFET
Faster, higher input impedance, but its input range does not include ground

Alternatives and Replacements

• LM2902B

• LM2902BA

• LM2902K

• LM2902KV

• LM2902KAV

• LM2902-Q1

• LM324N, etc.

Mechanical Dimensions

Mechanical Dimensions

Manufacturer

Texas Instruments has extensive capabilities in designing and manufacturing analog semiconductors such as the LM2902N. Its production process includes wafer fabrication, wafer probing, die assembly, 14-pin PDIP packaging, electrical testing, and final quality inspection. TI operates internal wafer fabrication and assembly-and-test facilities, providing greater control over product quality, production capacity, and supply continuity. During manufacturing, each device is tested to confirm that it meets specified electrical requirements, including voltage gain, bandwidth, input offset voltage, bias current, supply current, and temperature limits. TI also conducts qualification and ongoing reliability monitoring and provides material-compliance information for the LM2902N/NOPB, which is RoHS- and REACH-compliant and uses a NiPdAu lead finish.

Datasheet PDF


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