Overview
The TDA7295S is a monolithic integrated circuit produced by STMicroelectronics, designed for use as an audio class AB amplifier in Hi-Fi applications. It is packaged in a Multiwatt15 package and is suitable for various applications such as home stereo systems, self-powered loudspeakers, and top-class TV systems. The amplifier features a wide operating voltage range of ±40V and high output current capability, enabling it to deliver high power into both 4Ω and 8Ω loads. The built-in muting function with turn-on delay simplifies remote operation by avoiding switching on-off noises.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | ±10 to ±40 | V |
| Output Peak Current (IO) | 6 | A |
| Power Dissipation (Ptot) at Tcase = 70°C | 50 | W |
| Operating Ambient Temperature Range | 0 to 70 | °C |
| Storage and Junction Temperature (Tstg, Tj) | 150 | °C |
| Quiescent Current (Iq) | 20 to 65 | mA |
| Input Bias Current (Ib) | 500 | nA |
| Input Offset Voltage (VOS) | +10 | mV |
| RMS Continuous Output Power (PO) at VS = ±30V, RL = 8Ω | 45 | W |
| Thermal Resistance Junction-case (Rth j-case) | 1.5 | °C/W |
Key Features
- High operating voltage range (±40V) and high output current capability.
- Very low distortion and noise, ensuring high-quality audio output.
- Built-in muting and stand-by functions, independently driven by two CMOS logic compatible input pins.
- No switch on/off noise due to carefully optimized switching circuits.
- Short circuit protection and thermal shutdown circuit for enhanced reliability.
- Full protection against electrostatic discharges on every pin.
- Ability to operate in bridge configuration using two TDA7295S devices for higher power output.
- High efficiency operation with bootstrapping power supply pins to reduce thermal dissipation.
Applications
- Home stereo systems.
- Self-powered loudspeakers.
- Top-class TV systems.
- Hi-Fi/TV subwoofers in bridge configuration.
- Audio amplifiers requiring high power output into low impedance loads.
Q & A
- What is the maximum supply voltage for the TDA7295S?
The maximum supply voltage for the TDA7295S is ±40V.
- What is the maximum output power of the TDA7295S?
The TDA7295S can deliver up to 80W of music power into 4Ω or 8Ω loads.
- Does the TDA7295S have built-in protection features?
- Can the TDA7295S be used in bridge configuration?
- What is the thermal resistance junction-case for the TDA7295S?
- How does the muting function work on the TDA7295S?
- What is the quiescent current of the TDA7295S?
- Does the TDA7295S support high efficiency operation?
- What is the recommended heatsink thermal resistance for high power applications?
- Can the TDA7295S be used in parallel mode?
