Overview
The TDA2040, produced by STMicroelectronics, is a monolithic integrated circuit designed as an audio class-AB amplifier. It is packaged in the Pentawatt® package and is intended for high-fidelity audio applications. The TDA2040 is capable of delivering 25 watts of output power into a 4 Ω load with a total harmonic distortion (THD) of 0.5% at a supply voltage of ±17 V. It features high output current and very low harmonic and crossover distortion, making it suitable for a variety of audio amplification needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | ±2.5 V to ±20 V | V |
| Output Power (THD = 0.5%, RL = 4 Ω) | 25 W | W |
| Output Power (THD = 10%, RL = 4 Ω) | 30 W | W |
| Input Offset Voltage | ±2 to ±20 mV | mV |
| Input Bias Current | 0.3 to 1 μA | μA |
| Output Peak Current | 4 A | A |
| Power Dissipation at Tcase = 75 °C | 25 W | W |
| Thermal Shutdown Junction Temperature | 145 °C | °C |
| Storage and Junction Temperature | -40 to 150 °C | °C |
| Thermal Resistance Junction to Case | 3 °C/W | °C/W |
Key Features
- Wide-range supply voltage, up to 40 V
- Single or split power supply configuration
- Short-circuit protection to ground
- Thermal shutdown system
- High output current and very low harmonic and crossover distortion
- Power supply rejection ratio (PSRR) of up to 50 dB
- ROHS3 compliant and lead-free
Applications
The TDA2040 is suitable for various high-fidelity audio applications, including:
- Active loudspeaker systems: It can be used in systems that employ active crossovers to drive the audio spectrum into multiple bands, such as subwoofer, midrange, and tweeter configurations.
- Active power filters: The TDA2040 can be part of an active power filter circuit, combining power amplifiers with high-pass or low-pass filters to improve audio quality.
- General audio amplification: It is ideal for amplifying audio signals in various audio equipment, such as home audio systems, car audio systems, and professional audio gear.
Q & A
- What is the maximum output power of the TDA2040?
The TDA2040 can deliver up to 25 watts of output power into a 4 Ω load with a THD of 0.5% at a supply voltage of ±17 V.
- What is the supply voltage range for the TDA2040?
The TDA2040 can operate with supply voltages ranging from ±2.5 V to ±20 V.
- Does the TDA2040 have thermal protection?
Yes, the TDA2040 includes a thermal shutdown system that activates at a junction temperature of 145 °C).
- What kind of protection does the TDA2040 offer against short circuits?
The TDA2040 features a proprietary short-circuit protection system that automatically limits the dissipated power to keep the output transistors within their safe operating range).
- What is the thermal resistance junction to case for the TDA2040?
The thermal resistance junction to case for the TDA2040 is 3 °C/W).
- Is the TDA2040 ROHS compliant?
Yes, the TDA2040 is ROHS3 compliant and lead-free).
- What is the power supply rejection ratio (PSRR) of the TDA2040?
The PSRR of the TDA2040 is up to 50 dB).
- Can the TDA2040 be used in active loudspeaker systems?
Yes, the TDA2040 can be used in active loudspeaker systems, including those with active crossovers).
- What is the maximum output peak current of the TDA2040?
The maximum output peak current of the TDA2040 is 4 A).
- What is the storage and junction temperature range for the TDA2040?
The storage and junction temperature range for the TDA2040 is -40 to 150 °C).
