TDA2040 IC Hi-Fi Audio Power Amplifier 40V 4A Pentawatt V
The TDA2040 is a monolithic integrated circuit in the Pentawatt V package, intended for use as an audio class-AB amplifier.
Typically, it provides 25 W output power into 4 Ω with THD = 0.5% at VS = 34 V. The TDA2040 provides high output current and has very low harmonic and crossover distortion.
Furthermore, the device incorporates a patented short-circuit protection system.
Features:
- Hi-Fi class-AB monolithic audio power amplifier in a compact Pentawatt V package.
- Wide supply flexibility can run from single or split (dual) supplies, making it convenient for many amplifier topologies.
- Built-in protection: automatic short-circuit/power-limiting system and thermal shutdown to improve robustness and protect the IC and output stage.
- Low harmonic & crossover distortion optimized for good audio fidelity, suitable for hi-fi speaker driving.
- High output current capability and robust output transistors suitable for driving low-impedance speakers and bridge configurations.
- Easy-to-use application circuits: reference application circuits, PCB layout recommendations and bridge/mono/single-supply examples are provided in the datasheet for quick building.
- Good noise and ripple rejection for cleaner sound with ordinary power supplies.
- Well suited for active crossovers, multiway speaker systems, and DIY hi-fi projects common in small amplifiers and powered speaker designs.
Specifications:
| Parameter | Value / Rating |
|---|---|
| Device Type: | Hi-Fi Audio Power Amplifier IC |
| Package: | Pentawatt V (Vertical) |
| Supply Voltage (Dual): | ±4.5 V to ±20 V |
| Supply Voltage (Single): | 9 V to 40 V |
| Peak Output Current: | 4 A |
| Output Power (4Ω): | 25 W (0.5% THD) |
| Max Output Power: | 30 W (10% THD) |
| Power Dissipation: | 25 W |
| Quiescent Current: | 30 mA |
| Input Bias Current: | 0.3 µA |
| Input Offset Voltage: | ±2 mV, ±20 mV max |
| Open Loop Voltage Gain: | 80 dB |
| Closed Loop Voltage Gain: | 30 dB |
| Total Harmonic Distortion (THD): | 0.03% |
| Noise Voltage: | 2–3 µV |
| Supply Voltage Rejection Ratio (SVRR): | 40–50 dB |
| Efficiency: | Up to 66% |
| Thermal Shutdown: | Yes |
| Short Circuit Protection: | Yes |
| Junction Temperature: | –40 °C to +150 °C |
| ESD Protection: | ±1500 V |
Pinout:
| Pin | Function |
|---|---|
| 1 | Non-inverting input (+) |
| 2 | Inverting input (–) |
| 3 | –V (Negative supply) |
| 4 | Output |
| 5 | +V (Positive supply) |
Footprint Diagram:
Applications:
- Hi-fi audio amplifier systems.
- Powered speakers and subwoofers.
- Guitar and musical instrument amplifiers.
- Audio preamplifiers and mixers.
- DIY audio electronics projects.
- Home audio and stereo systems.
Packages:
- 1x TDA2040 IC Hi-Fi Audio Power Amplifier 40V 4A Pentawatt V.
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