LM2902DT Detailed explanation of pin function specifications and circuit principle instructions
The LM2902DT is an operational amplifier (op-amp) from the Texas Instruments brand. Specifically, it is a quad op-amp with four independent operational amplifiers in a single package.
It belongs to the LM2900 series of op-amps, which are designed for precision analog applications. The LM2902DT comes in a Dual In-Line Package (DIP), typically a 14-pin configuration.
Pin Function Specifications and Circuit Principles for LM2902DT
The LM2902DT has a total of 8 pins, as it is a quad op-amp, which includes four amplifiers. Below is the detailed explanation of the pin functions for this specific device.
Package Type:
The LM2902DT is a SOIC (Small Outline Integrated Circuit) Package. The packaging is surface-mount, offering a smaller form factor for use in automated soldering processes and higher-density circuit boards.
Pin Function List (14-pin DIP package)
Pin Number Pin Name Function Description 1 Output 1 Output pin of the first op-amp in the quad package. 2 Inverting Input 1 Inverting input for the first operational amplifier. 3 Non-inverting Input 1 Non-inverting input for the first operational amplifier. 4 V- Negative supply voltage pin. Typically connected to ground in single-supply designs. 5 Output 2 Output pin of the second op-amp in the quad package. 6 Inverting Input 2 Inverting input for the second operational amplifier. 7 Non-inverting Input 2 Non-inverting input for the second operational amplifier. 8 V+ Positive supply voltage pin. 9 Output 3 Output pin of the third op-amp in the quad package. 10 Inverting Input 3 Inverting input for the third operational amplifier. 11 Non-inverting Input 3 Non-inverting input for the third operational amplifier. 12 Output 4 Output pin of the fourth op-amp in the quad package. 13 Inverting Input 4 Inverting input for the fourth operational amplifier. 14 Non-inverting Input 4 Non-inverting input for the fourth operational amplifier.FAQ for LM2902DT
1. What is the LM2902DT used for? The LM2902DT is a quad operational amplifier commonly used for amplification in analog signal processing, active filtering, and instrumentation. 2. How many operational amplifiers are in the LM2902DT package? The LM2902DT contains four independent operational amplifiers in a single package. 3. What is the voltage supply range for the LM2902DT? The LM2902DT typically operates with a supply voltage of 3V to 32V (single supply) or ±1.5V to ±16V (dual supply). 4. What is the package type of the LM2902DT? The LM2902DT is available in a SOIC-14 (14-pin Small Outline Integrated Circuit) package. 5. Can the LM2902DT be used for single-supply applications? Yes, the LM2902DT can be used for both single-supply and dual-supply configurations. 6. What is the typical power consumption of the LM2902DT? The LM2902DT typically consumes less than 1mA of current per op-amp, making it suitable for low-power applications. 7. Is the LM2902DT suitable for high-speed applications? The LM2902DT is not a high-speed op-amp, as its slew rate is relatively low, about 0.3V/μs. 8. What is the input offset voltage of the LM2902DT? The LM2902DT has a typical input offset voltage of 2mV. 9. What is the output voltage swing range of the LM2902DT? The output voltage swing typically ranges from 0V to V+ - 1.5V in a single-supply configuration. 10. What is the noise level of the LM2902DT? The LM2902DT is designed for low-noise operation, typically producing 15nV/√Hz of voltage noise at 1kHz. 11. What are the limitations of the LM2902DT? The LM2902DT has limitations in speed and output voltage swing compared to high-speed or precision op-amps. It is suitable for low- to medium-speed analog signals. 12. How do I connect the LM2902DT in a circuit? For a typical op-amp configuration, connect the inverting and non-inverting inputs to the signal source, while the output pin delivers the amplified signal. Use appropriate feedback resistors based on the desired gain. 13. Can the LM2902DT operate at low temperatures? Yes, the LM2902DT can operate over a temperature range of -40°C to +85°C, making it suitable for general-purpose applications. 14. What is the gain-bandwidth product of the LM2902DT? The gain-bandwidth product for the LM2902DT is typically 1MHz. 15. Is the LM2902DT available in a through-hole package? The LM2902DT is primarily available in surface-mount packages (such as SOIC), but its sister parts in the LM2900 series may be available in through-hole configurations. 16. What is the total harmonic distortion (THD) of the LM2902DT? The total harmonic distortion (THD) is typically very low, less than 0.01% at moderate frequencies. 17. Can the LM2902DT be used for audio applications? Yes, the LM2902DT can be used for audio applications, but it is more suited for general-purpose analog circuits due to its low-speed characteristics. 18. What is the power supply tolerance for the LM2902DT? The LM2902DT operates with a typical tolerance of ±10% of the rated supply voltage. 19. How do I calculate the gain of an amplifier using LM2902DT? Gain can be calculated using the formula: Gain = 1 + (Rf / Rin) where Rf is the feedback resistor and Rin is the resistor from the input signal to the inverting input pin. 20. What are the typical applications of the LM2902DT? Typical applications include signal amplification, active filtering, voltage comparison, and instrumentation.This concludes the detailed pinout and FAQs for the LM2902DT operational amplifier. Let me know if you need further details!