The TL084IDR is a type of operational amplifier (op-amp) manufactured by Texas Instruments, a well-known semiconductor company. The TL084IDR is an integrated circuit (IC) that contains a quad op-amp, meaning it has four operational amplifiers in one package. This specific model is intended for precision analog signal processing applications, providing low offset voltage, low noise, and high input impedance.
Package Type:
The TL084IDR comes in a DIP-14 (Dual In-line Package, 14 pins) package. However, it is also available in other package types, such as SOIC-14, depending on your application needs.
Pin Function List for the TL084IDR (DIP-14 Package):
Pin No. Pin Name Description 1 Offset Null 1 Used for offset voltage adjustment; connects to a potentiometer or fixed resistor to set the op-amp's offset voltage. 2 Inverting Input 1 The inverting input terminal of the first op-amp. This is where the negative feedback is applied. 3 Non-Inverting Input 1 The non-inverting input terminal of the first op-amp. Input voltage applied to this pin is amplified with respect to ground. 4 V- (Negative Power Supply) The negative power supply connection for the first op-amp. Typically connected to ground or a negative voltage source. 5 Offset Null 2 Used for offset voltage adjustment for the second op-amp. Same function as Pin 1, but for the second op-amp in the package. 6 Inverting Input 2 The inverting input terminal for the second op-amp. This pin will receive the signal that will be inverted. 7 Non-Inverting Input 2 The non-inverting input terminal of the second op-amp. The signal applied here will be amplified with respect to the negative input. 8 V+ (Positive Power Supply) The positive power supply connection for the first op-amp, typically connected to a positive voltage source. 9 Output 1 The output terminal for the first op-amp. The amplified signal will appear at this pin. 10 Output 2 The output terminal for the second op-amp. 11 Non-Inverting Input 3 The non-inverting input for the third op-amp in the quad configuration. 12 Inverting Input 3 The inverting input for the third op-amp. 13 Non-Inverting Input 4 The non-inverting input for the fourth op-amp. 14 Inverting Input 4 The inverting input for the fourth op-amp.Pin Function Explanation:
Offset Null Pins (Pins 1, 5): These pins are used to adjust the input offset voltage of the op-amp. A potentiometer or variable resistor is typically connected between the pins, and a voltage is applied to fine-tune the offset, which helps to minimize drift and improve the precision of the op-amp. Inverting Inputs (Pins 2, 6, 12, 14): These pins serve as the inverting input terminals for the four operational amplifiers inside the IC. A negative feedback signal is typically applied to these inputs to set the gain. Non-Inverting Inputs (Pins 3, 7, 11, 13): These pins serve as the non-inverting input terminals for the respective operational amplifiers. A signal applied to these inputs is amplified relative to the inverting input. V+ and V- (Pins 8, 4): These pins provide the power supply connections for the op-amps. V+ is the positive supply, while V- is the negative supply. Outputs (Pins 9, 10): These are the output pins where the amplified signals will appear. The gain of the signal depends on the circuit configuration and feedback used.FAQs for TL084IDR:
Q: What is the TL084IDR? A: The TL084IDR is a quad operational amplifier from Texas Instruments designed for precision analog signal processing.
Q: What is the function of the offset null pins (1 and 5) on the TL084IDR? A: These pins are used to adjust the input offset voltage of the operational amplifiers for precise performance.
Q: How many operational amplifiers are there in the TL084IDR? A: The TL084IDR contains four operational amplifiers in a single package.
Q: What package type is the TL084IDR available in? A: The TL084IDR is available in a DIP-14 package but may also come in other types like SOIC-14.
Q: What is the power supply voltage range for the TL084IDR? A: The TL084IDR operates with a dual supply voltage, typically from ±3V to ±18V.
Q: Can the TL084IDR be used for both single-supply and dual-supply operations? A: Yes, the TL084IDR can be used in both configurations, but care must be taken with input and output voltage levels for single-supply use.
Q: What is the typical application for the TL084IDR? A: The TL084IDR is often used in precision analog circuits, such as filters , amplifiers, and signal conditioning systems.
Q: What is the TL084IDR’s input bias current? A: The typical input bias current for the TL084IDR is 100pA.
Q: What is the gain-bandwidth product of the TL084IDR? A: The TL084IDR typically has a gain-bandwidth product of 3MHz.
Q: What is the output drive capability of the TL084IDR? A: The TL084IDR can typically drive 10kΩ loads to ground, providing sufficient output current for many applications.
Q: What is the slew rate of the TL084IDR? A: The TL084IDR has a typical slew rate of 0.3V/µs.
Q: Is the TL084IDR suitable for low-voltage operation? A: The TL084IDR is designed for use with dual power supplies, and its performance at low voltages (under ±3V) may be limited.
Q: How do you connect the output pins (9 and 10) in a typical circuit? A: The output pins (9 and 10) are connected to the load or the subsequent stage of the circuit where the amplified signal is needed.
Q: Can the TL084IDR be used in precision instrumentation? A: Yes, due to its low offset voltage and low noise, the TL084IDR is suitable for precision instrumentation applications.
Q: How do you configure the TL084IDR for non-inverting amplification? A: For non-inverting amplification, you apply the input signal to the non-inverting input (pins 3, 7, 11, or 13) and use the inverting input for feedback.
Q: What are the thermal limitations of the TL084IDR? A: The TL084IDR has a typical thermal resistance of 100°C/W, and it should not exceed a junction temperature of 150°C.
Q: What is the output impedance of the TL084IDR? A: The output impedance of the TL084IDR is typically low, around 50Ω under no load conditions.
Q: Can the TL084IDR drive capacitive loads? A: The TL084IDR is not recommended for driving large capacitive loads directly, as it may cause stability issues.
Q: How is the TL084IDR configured in a differential amplifier setup? A: In a differential amplifier setup, the inverting and non-inverting inputs of the TL084IDR are connected to the differential input signals, with appropriate feedback networks.
Q: What is the input offset voltage of the TL084IDR? A: The typical input offset voltage of the TL084IDR is 3mV, with a maximum value of 7mV.
Conclusion:
The TL084IDR is a versatile operational amplifier suitable for a wide range of applications, from general-purpose amplifications to precision analog circuits. Its 14-pin configuration provides comprehensive functionality for diverse needs.
