Overview
The TDA2050H, produced by STMicroelectronics, is a monolithic integrated circuit designed for use as an audio class-AB audio amplifier. It is packaged in a Pentawatt package, which facilitates easy heatsink mounting. This amplifier is renowned for its high power capability, making it suitable for both hi-fi audio systems and high-end TV sets. The TDA2050H can deliver up to 35 W true RMS power into a 4 ohm load and up to 32 W into an 8 ohm load, with very low harmonic and crossover distortion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VS) | ±25 | V |
| Input Voltage (Vi) | VS | V |
| Differential Input Voltage | ±15 | V |
| Output Peak Current (IO) | 5 | A |
| Power Dissipation at TCASE = 75 °C (Ptot) | 25 | W |
| Storage and Junction Temperature (Tstg, Tj) | -40 to 150 | °C |
| Thermal Resistance Junction-Case (Rth j-case) | 3 (max) | °C/W |
| Output Power (PO) at THD = 10%, RL = 4 Ω | 35 | W |
| Output Power (PO) at THD = 10%, RL = 8 Ω | 32 | W |
| Music Power into 4 ohm load over 1 sec | 50 | W |
| Total Harmonic Distortion (THD) at VS = ±22 V, PO = 0.1 to 15 W, RL = 8 ohm, f = 100 Hz to 15 kHz | 0.05% (typ) | % |
Key Features
- High output power: Up to 35 W true RMS into a 4 ohm load and up to 32 W into an 8 ohm load.
- High operating supply voltage: Up to ±25 V.
- Single or split supply operations.
- Very low distortion: THD = 0.05% typical at specified conditions.
- Short-circuit protection: Limits the current of the output transistors to prevent damage during accidental short circuits.
- Thermal shutdown: Reduces power dissipation and current consumption if the junction temperature exceeds 150 °C.
Applications
The TDA2050H is highly suitable for various audio applications, including:
- Hi-fi audio systems.
- High-end TV sets.
- Professional audio equipment.
- Home theaters and sound systems.
Q & A
- What is the maximum output power of the TDA2050H?
The TDA2050H can deliver up to 35 W true RMS power into a 4 ohm load and up to 32 W into an 8 ohm load at THD = 10%.
- What is the maximum supply voltage for the TDA2050H?
The maximum supply voltage is ±25 V.
- Does the TDA2050H support single or split supply operations?
Yes, it supports both single and split supply operations.
- What is the typical total harmonic distortion (THD) of the TDA2050H?
The typical THD is 0.05% at VS = ±22 V, PO = 0.1 to 15 W, RL = 8 ohm, f = 100 Hz to 15 kHz.
- Does the TDA2050H have short-circuit protection?
Yes, it has an original circuit that limits the current of the output transistors to prevent damage during accidental short circuits.
- What is the thermal shutdown feature of the TDA2050H?
The thermal shutdown reduces power dissipation and current consumption if the junction temperature exceeds 150 °C.
- How should the heatsink be mounted for the TDA2050H?
The heatsink should be mounted using a screw or a compression spring, with a layer of silicon grease for optimal thermal contact.
- What are the recommended external components for the TDA2050H in split-supply applications?
The recommended values are provided in the datasheet, including resistors and capacitors for input impedance, feedback, and frequency stability.
- Can the TDA2050H be used in professional audio equipment?
Yes, it is suitable for professional audio equipment due to its high power capability and low distortion.
- What is the storage and junction temperature range for the TDA2050H?
The storage and junction temperature range is -40 to 150 °C.
- How does the thermal resistance junction-case affect the TDA2050H?
The thermal resistance junction-case is 3 °C/W (max), which influences the maximum allowable power dissipation based on ambient temperature.
