The TJM4558CDT is a part number for an operational amplifier IC. It is manufactured by Toshiba, a reputable electronics brand. The specific version you're asking about (TJM4558CDT) comes in a DIP-8 (Dual In-line Package) configuration. It has 8 pins, and its functionality corresponds to the typical characteristics of a dual op-amp integrated circuit.
Let's break down the pin functions in detail for this IC:
Pin Functions (8-pin DIP Package)
Pin Number Pin Name Pin Description 1 Offset Null This pin is used to adjust the input offset voltage of the operational amplifier. A potentiometer can be used to fine-tune the offset. 2 Inverting Input (Op-Amp 1) The inverting input for the first op-amp inside the IC. The signal applied to this pin is inverted relative to the non-inverting input. 3 Non-inverting Input (Op-Amp 1) The non-inverting input for the first op-amp. The signal applied to this pin will be amplified without inversion. 4 V- (Negative Supply) This pin connects to the negative supply voltage. Typically, this is the ground or a negative voltage rail. 5 Offset Null Like pin 1, this pin is also used for offset voltage adjustment of the second op-amp in the circuit. It is typically tied to pin 1 for a dual adjustment. 6 Output (Op-Amp 1) The output of the first op-amp. This pin provides the amplified signal based on the inputs applied to pins 2 and 3. 7 V+ (Positive Supply) This pin connects to the positive supply voltage. It provides the necessary power for the operational amplifier to function. 8 Output (Op-Amp 2) The output of the second op-amp. This pin provides the amplified signal for the second op-amp, which is based on the inputs applied to pins 2 and 3.Circuit Principle Explanation
The TJM4558CDT is a dual operational amplifier (op-amp) IC. It contains two independent op-amps within a single package. Operational amplifiers are often used to amplify weak electrical signals. They can also perform mathematical operations like addition, subtraction, integration, and differentiation, depending on the circuit configuration.
The general function of the IC involves using negative feedback to stabilize the voltage gain of the op-amps. By adjusting the input signals to the non-inverting or inverting inputs (pins 2 and 3), the IC provides a corresponding output signal on pins 6 and 8. The offset null pins (pins 1 and 5) allow for fine adjustments of the input offset voltage to ensure proper signal amplification without distortion.
FAQs for TJM4558CDT Operational Amplifier
1. What is the supply voltage for the TJM4558CDT? The TJM4558CDT requires a dual supply voltage, typically +Vcc (positive) and -Vee (negative), ranging from ±3V to ±18V. 2. Can I use the TJM4558CDT for audio applications? Yes, the TJM4558CDT is commonly used in audio signal amplification circuits, where low noise and high stability are required. 3. What is the maximum output voltage swing of the TJM4558CDT? The output voltage swing typically ranges from (V+ - 1.5V) to (V- + 1.5V), depending on the load impedance. 4. What is the input offset voltage of the TJM4558CDT? The typical input offset voltage is 2mV, with a maximum of 7mV, which can be adjusted using the offset null pins. 5. How should I connect the offset null pins? The offset null pins (pins 1 and 5) are used to adjust the input offset voltage. A potentiometer or variable resistor is typically connected between these pins to fine-tune the offset. 6. What is the typical application circuit for the TJM4558CDT? The TJM4558CDT is commonly used in amplifiers, voltage followers, filters , integrators, and other analog circuits. 7. What is the power consumption of the TJM4558CDT? The typical power consumption is very low, and it is rated for a maximum of 500mW. 8. Can the TJM4558CDT operate at low temperatures? Yes, the operating temperature range is from -40°C to +85°C, making it suitable for a variety of environments. 9. How do I use the TJM4558CDT for a non-inverting amplifier? Connect the signal to the non-inverting input (pin 3), the inverting input (pin 2) to a resistor network, and the output (pin 6 or 8) will provide the amplified signal. 10. How do I use the TJM4558CDT for an inverting amplifier? Connect the signal to the inverting input (pin 2), the non-inverting input (pin 3) to ground, and the output (pin 6 or 8) will provide the inverted amplified signal. 11. What is the input impedance of the TJM4558CDT? The typical input impedance is 2MΩ, which is very high and allows it to work well with high-impedance sources. 12. Can I use the TJM4558CDT with a single supply voltage? Yes, the TJM4558CDT can operate with a single supply voltage, but a dual supply provides better performance. 13. What is the bandwidth of the TJM4558CDT? The typical bandwidth is 3MHz, and it can be affected by the load impedance and configuration. 14. What is the slew rate of the TJM4558CDT? The typical slew rate is 0.3V/μs, which indicates how quickly the output can change in response to input changes. 15. What is the common-mode rejection ratio (CMRR) of the TJM4558CDT? The CMRR is typically 100dB, meaning the IC can reject common-mode signals effectively. 16. What is the output drive capability of the TJM4558CDT? The output can drive loads up to 10kΩ without significant distortion. 17. Can I use the TJM4558CDT for voltage regulation? While it can be used in voltage regulation circuits, a dedicated voltage regulator IC is typically preferred for precise regulation. 18. What is the input bias current of the TJM4558CDT? The typical input bias current is 100nA, which is important for proper operation in high-impedance applications. 19. Is the TJM4558CDT a low-noise op-amp? Yes, it is designed to have low noise and is suitable for precision signal amplification applications. 20. How do I use the TJM4558CDT in a filter circuit? The IC can be configured in active filter designs, such as low-pass, high-pass, or band-pass filters, by using the appropriate feedback network.This covers the detailed pin-out and functionality of the TJM4558CDT operational amplifier, along with frequently asked questions. The IC's key features include low noise, wide bandwidth, and versatility in various analog applications.