Overview
The TDA7233/D, produced by STMicroelectronics, is a monolithic integrated circuit designed as a class AB power amplifier. It is available in 8-pin Minidip or SO8 packages and is intended for use in a wide range of audio applications, including portable players, cordless telephones, and cellular radios. This amplifier is notable for its wide supply voltage range of 1.8V to 15V, making it versatile for various power sources. The TDA7233/D features external mute or power down functions, improved supply voltage rejection, low quiescent current, high power capability, and low crossover distortion, ensuring high-quality audio output with minimal power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.8 to 15 | V |
| Output Peak Current | 1 | A |
| Total Power Dissipation at Tamb = 50°C | 1 | W |
| Storage and Junction Temperature | -40 to 150 | °C |
| Thermal Resistance Junction-ambient (SO8) | 200 | °C/W |
| Quiescent Output Voltage (Vs = 3 V, Vs = 9 V) | 1.2, 4.2 | V |
| Quiescent Drain Current (MUTE HIGH, MUTE LOW) | 3.6, 0.4 | mA |
| Input Bias Current | 100 | nA |
| Output Power (Vs = 12 V, RL = 8 Ω; Vs = 9 V, RL = 4 Ω; etc.) | 1.9, 1.6, 1, 0.4, 0.7 | W, W, W, W, mW |
| Distortion (Po = 0.5 W, f = 1 kHz, RL = 8 Ω, Vs = 9 V) | 0.3 | % |
| Closed Loop Voltage Gain (f = 1 kHz) | 39 | dB |
| Input Resistance (f = 1 kHz) | 100 | KΩ |
| Total Input Noise (Rs = 10 kΩ) | 2, 3 | µV |
| Supply Voltage Rejection (f = 100 Hz, Rg = 10 KΩ) | 45 | dB |
| MUTE Attenuation (Vo = 1 V, f = 100 Hz to 10 kHz) | 70 | dB |
| MUTE Threshold | 0.6 | V |
| MUTE Current (VS = 15V) | 0.4 | mA |
Key Features
- Operating voltage range of 1.8V to 15V, making it suitable for various power sources.
- External mute or power down function for efficient power management.
- Improved supply voltage rejection to minimize noise and distortion.
- Low quiescent current to reduce power consumption in standby mode.
- High power capability with output power up to 1.9W.
- Low crossover distortion for high-quality audio output.
- Compact form factor in 8-pin Minidip or SO8 packages.
Applications
- Portable audio devices such as smartphones, tablets, and music players.
- Cordless telephones and cellular radios.
- Home audio systems and automotive sound systems.
- Compact tablet companions and wireless speaker solutions.
Q & A
- Q: What is the operating voltage range of the TDA7233/D?
A: The operating voltage range is from 1.8V to 15V. - Q: What is the maximum output power of the TDA7233/D?
A: The maximum output power is up to 1.9W. - Q: What are the package options for the TDA7233/D?
A: It is available in 8-pin Minidip or SO8 packages. - Q: What is the quiescent current of the TDA7233/D in mute mode?
A: The quiescent current in mute mode is 0.4 mA. - Q: What is the thermal resistance junction-ambient for the SO8 package?
A: The thermal resistance junction-ambient for the SO8 package is 200 °C/W. - Q: What is the distortion level at 0.5W output power and 1kHz frequency?
A: The distortion level is 0.3%. - Q: How does the mute function work on the TDA7233/D?
A: The mute function can be controlled externally, and it provides an attenuation of up to 70 dB. - Q: What is the input resistance of the TDA7233/D at 1kHz frequency?
A: The input resistance is 100 KΩ. - Q: What is the supply voltage rejection ratio (PSRR) of the TDA7233/D?
A: The PSRR is 45 dB at 100 Hz with a 10 KΩ resistor. - Q: What are some common applications of the TDA7233/D?
A: Common applications include portable audio devices, cordless telephones, cellular radios, home audio systems, and automotive sound systems.
