Overview
The STA540 is a 4-channel, class-AB audio amplifier designed for high-quality sound applications. It is manufactured by STMicroelectronics and is housed in a 15-pin Multiwatt ECOPACK® Pb-free package, which is RoHS (2002/95/EC) compliant. This amplifier is tailored for applications requiring clear and robust audio performance, with integrated short-circuit protection, thermal protection, and diagnostic functions. The STA540 is suitable for a variety of audio systems, including home theater systems, professional audio equipment, and high-end speaker setups.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 8 - 22 | V |
| Operating Temperature | 0 to 70 | °C |
| Total Quiescent Drain Current | 80 - 150 | mA |
| Output Power (SE, THD=10%, RL=4 Ω) | 6.5 - 11.5 | W |
| Output Power (BTL, THD=10%, RL=4 Ω) | 21 - 34 | W |
| Total Harmonic Distortion (RL = 4 Ω, Po = 0.1 to 4 W) | 0.02 % | |
| Short-Circuit Output Current | 4.0 | A |
| Thermal Shutdown Temperature | 160 | °C |
| Package Type | Multiwatt-15 (Vertical, Bent and Staggered Leads) | |
| Number of Pins | 15 |
Key Features
- High Output Power Capability: Configurations include 2x 38 W into 4 Ω at 18 V, 2x 34 W into 8 Ω at 22 V, 4x 13 W into 2 Ω at 15 V, and more.
- Minimum External Components Count: No bootstrap capacitors, no Boucherot cells, and internally fixed gain of 20 dB.
- Standby Function: CMOS compatible with no audible pop during standby operations.
- Diagnostic Facilities: Includes clip detector, output to GND short-circuit detector, output to VS short-circuit detector, soft short-circuit check at turn-on, and thermal shutdown warning.
- Protection Features: Output AC/DC short circuit, thermal cutoff/limiter, and high inductive loads handling.
- ESD Protection: Shields components from electrostatic discharges.
- Soft Start and Thermal Limiters: Prevents inrush current and overheating, ensuring safe operations.
Applications
The STA540 is widely used in various audio applications where high-fidelity sound and reliability are crucial. These include:
- Home Theater Systems: For clear and robust audio performance in home entertainment setups.
- Professional Audio Equipment: Suitable for live events and professional audio systems requiring durability and sound clarity.
- High-End Speaker Setups: Ideal for applications where superior auditory performance is necessary.
Q & A
- What is the STA540?
The STA540 is a 4-channel, class-AB audio amplifier designed for high-quality sound applications, manufactured by STMicroelectronics.
- What is the package type of the STA540?
The STA540 is housed in a 15-pin Multiwatt ECOPACK® Pb-free package.
- What are the key protection features of the STA540?
The STA540 includes output AC/DC short circuit protection, thermal cutoff/limiter, and high inductive loads handling. It also features ESD protection and diagnostic facilities such as clip detector and short-circuit detectors.
- What are the typical output power configurations of the STA540?
Configurations include 2x 38 W into 4 Ω at 18 V, 2x 34 W into 8 Ω at 22 V, 4x 13 W into 2 Ω at 15 V, and more.
- Does the STA540 have a standby function?
Yes, the STA540 has a CMOS compatible standby function with no audible pop during standby operations.
- What is the operating temperature range of the STA540?
The operating temperature range of the STA540 is 0 to 70°C.
- Is the STA540 RoHS compliant?
Yes, the STA540 is RoHS (2002/95/EC) compliant and lead-free.
- What diagnostic facilities does the STA540 offer?
The STA540 offers diagnostic facilities including clip detector, output to GND short-circuit detector, output to VS short-circuit detector, soft short-circuit check at turn-on, and thermal shutdown warning.
- How does the STA540 handle thermal issues?
The STA540 features thermal protection with thermal cutoff/limiter and thermal shutdown warning to prevent overheating.
- What types of applications is the STA540 suitable for?
The STA540 is suitable for home theater systems, professional audio equipment, and high-end speaker setups where high-fidelity sound and reliability are crucial.
