Overview
The TDA7448 is a 6-channel volume controller designed by STMicroelectronics for high-quality audio applications in multi-channel audio systems. Utilizing bipolar/CMOS technology, this component offers low distortion, low noise, and precise DC stepping. It is particularly suited for systems requiring independent volume control for each channel.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VS) | 4.75 | 9 | 10 | V |
| Operating Ambient Temperature (Tamb) | 0 | - | 70 | °C |
| Storage Temperature Range (Tstg) | -55 | - | 150 | °C |
| Supply Current (IS) | - | 7 | - | mA |
| Input Resistance (RIN) | 35 | 50 | 65 | kΩ |
| Clipping Level (VCL) | 2 | - | 2.5 | Vrms |
| Volume Control Range | -79 | - | 0 | dB |
| Volume Step Resolution | 1 | - | - | dB |
| Mute Attenuation | - | - | 90 | dB |
| Signal to Noise Ratio (S/N) | - | - | 100 | dB |
| Total Harmonic Distortion (THD) | 0.01 | 0.1 | - | % |
Key Features
- 6 independent input and output channels
- Volume attenuation range of 0 to -79 dB in 1 dB steps
- Low distortion and low noise due to bipolar/CMOS technology
- All functions programmable via I2C serial bus interface
- High channel separation and signal to noise ratio
- Mute function with 90 dB attenuation
- Operating supply voltage range of 4.75 V to 10 V
Applications
The TDA7448 is designed for use in multi-channel audio systems, including home theaters, professional audio equipment, and automotive audio systems. Its independent channel control and high resolution volume steps make it suitable for applications requiring precise audio control.
Q & A
- What is the TDA7448? The TDA7448 is a 6-channel volume controller designed for high-quality audio applications.
- What is the volume control range of the TDA7448? The volume control range is from 0 to -79 dB in 1 dB steps.
- What is the mute attenuation of the TDA7448? The mute attenuation is 90 dB.
- What interface does the TDA7448 use for programming? The TDA7448 uses an I2C serial bus interface for programming.
- What is the operating supply voltage range of the TDA7448? The operating supply voltage range is from 4.75 V to 10 V.
- What is the typical supply current of the TDA7448? The typical supply current is 7 mA.
- What is the signal to noise ratio (S/N) of the TDA7448? The signal to noise ratio is 100 dB.
- What is the total harmonic distortion (THD) of the TDA7448? The total harmonic distortion is between 0.01% and 0.1%.
- How many channels does the TDA7448 support? The TDA7448 supports 6 independent input and output channels.
- What technology is used in the TDA7448? The TDA7448 uses bipolar/CMOS technology.
