The part number "OPA454AIDDA" refers to a product manufactured by Texas Instruments (TI). It is a high- Power operational amplifier that comes in the DDA package, specifically the HTSSOP-20 (20-pin package). This part is used in high-voltage, high-precision applications.
Pin Function Specifications and Circuit Principle:
The OPA454AIDDA is a power operational amplifier designed for driving high-impedance loads and delivering high output voltage swing while maintaining low distortion and wide bandwidth.
Here’s the detailed pinout for the OPA454AIDDA with all 20 pins explained:
Pin # Pin Name Pin Function 1 V− Negative supply voltage (usually connected to ground or a negative supply rail) 2 NC No connection. This pin is typically left floating. 3 IN− Inverting input for the operational amplifier 4 IN+ Non-inverting input for the operational amplifier 5 VOUT Output pin where the amplified signal is delivered 6 V− Negative supply voltage (the second pin of the negative supply rail) 7 NC No connection. Often unused or for internal stability purposes 8 V− Negative supply voltage (the third pin of the negative supply rail) 9 V+ Positive supply voltage (usually connected to the positive supply rail) 10 NC No connection. 11 OUT Output pin for signal, where the result of the amplification appears 12 V+ Positive supply voltage (second pin of positive supply rail) 13 IN− Inverting input for the operational amplifier 14 IN+ Non-inverting input for the operational amplifier 15 V− Negative supply voltage 16 VOUT Output signal pin. This pin carries the amplified output 17 V+ Positive supply voltage (third pin of positive supply rail) 18 V− Negative supply voltage 19 NC No connection. 20 VOUT Amplified signal output pin.Detailed Pin Function Descriptions:
V− (Pins 1, 6, 8, 15): These pins are used for the negative supply voltage for the op-amp. They must be connected to a proper negative voltage or ground depending on the system configuration. V+ (Pins 9, 12, 17): These pins connect to the positive supply voltage and power the op-amp. IN+ (Pins 4, 14): These are the non-inverting input pins. The input signal can be applied here for the operation of the amplifier. IN− (Pins 3, 13): The inverting input pins. The input signal can be connected here for the inverted signal amplification. VOUT (Pins 5, 16, 20): These are the output pins where the amplified output signal is sent to the next stage in the circuit.Packaging Type:
The OPA454AIDDA comes in a HTSSOP-20 (High Thermal, Shrink Small Outline Package) which has 20 pins. It's commonly used in applications that require a small form factor without sacrificing thermal performance.
Frequently Asked Questions (FAQ):
Q: What is the typical application for OPA454AIDDA? A: The OPA454AIDDA is typically used in power amplifiers, audio systems, and high-voltage precision circuits.
Q: What is the output voltage range for the OPA454AIDDA? A: The OPA454AIDDA can output a voltage that swings close to the supply rails, typically within 1V of the rails.
Q: What is the supply voltage range for the OPA454AIDDA? A: The OPA454AIDDA operates with a supply voltage between 4V to 40V.
Q: How much current can the OPA454AIDDA deliver? A: The OPA454AIDDA can deliver output currents up to 2A.
Q: What is the bandwidth of the OPA454AIDDA? A: The OPA454AIDDA has a bandwidth of approximately 2.5MHz at a gain of 1.
Q: Can the OPA454AIDDA be used in bridge amplifiers? A: Yes, the OPA454AIDDA is suitable for use in bridge amplifiers, especially where high-power output is required.
Q: What is the quiescent current of the OPA454AIDDA? A: The quiescent current of the OPA454AIDDA is typically 10mA.
Q: Does the OPA454AIDDA have built-in protection against over-voltage? A: Yes, the OPA454AIDDA includes protection against over-voltage, over-temperature, and short circuits.
Q: How do I connect the OPA454AIDDA in a typical amplifier configuration? A: Connect the inverting and non-inverting inputs (pins 3 and 4 or 13 and 14), set up appropriate feedback resistors, and supply the positive and negative voltages to pins 9, 12, 17, and 1, 6, 8, 15.
Q: Can the OPA454AIDDA be used in audio applications? A: Yes, the OPA454AIDDA is commonly used in audio amplifiers, especially for high-power output and low distortion.
Q: What is the maximum output current of the OPA454AIDDA? A: The maximum output current that the OPA454AIDDA can supply is 2A.
Q: What is the thermal resistance of the OPA454AIDDA? A: The thermal resistance of the OPA454AIDDA is 3.4°C/W.
Q: How does the OPA454AIDDA handle thermal shutdown? A: The OPA454AIDDA will enter thermal shutdown if the junction temperature exceeds 150°C, and it will restart once it cools down.
Q: What is the power consumption of the OPA454AIDDA? A: Power consumption depends on the load and supply voltage, but the OPA454AIDDA is designed for low power consumption, typically 25mA with no load.
Q: Can I use the OPA454AIDDA in a single-supply configuration? A: Yes, the OPA454AIDDA can be used in a single-supply configuration with appropriate external components.
Q: How should the OPA454AIDDA be mounted on a PCB? A: The OPA454AIDDA should be mounted on a PCB with adequate thermal management, especially if driving high-power loads.
Q: What are the key benefits of the OPA454AIDDA? A: The OPA454AIDDA offers high output current, low distortion, wide bandwidth, and reliability in high-voltage applications.
Q: Can I use the OPA454AIDDA for precision voltage control? A: Yes, the OPA454AIDDA is suitable for precision voltage regulation and control due to its accuracy and stability.
Q: What is the slew rate of the OPA454AIDDA? A: The OPA454AIDDA has a slew rate of 0.5V/µs.
Q: Is there a specific layout requirement for the OPA454AIDDA? A: Yes, the OPA454AIDDA should be placed on a PCB with low-inductance traces, proper decoupling capacitor s, and heat dissipation features.
These details provide an in-depth understanding of the OPA454AIDDA's functionality, pinout, and common use cases in various applications.