Overview
The TDA7439DS is a three-band digitally-controlled audio processor developed by STMicroelectronics. It is designed for high-quality audio applications in car-radio and Hi-Fi systems. This processor integrates volume, tone (bass, mid-range, and treble), and balance (left/right) controls, making it a versatile component for various audio systems. The TDA7439DS employs BIPOLAR/CMOS technology to ensure low distortion, low noise, and precise DC stepping.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VS) | 7 | 9 | 10.2 | V |
| Operating Ambient Temperature (Tamb) | 0 | - | 70 | °C |
| Storage Temperature Range (Tstg) | -55 | - | 150 | °C |
| Input Resistance (RIN) | 70 | 100 | 130 | kΩ |
| Clipping Level (VCL) at THD = 0.3% | 2 | - | 2.5 | V RMS |
| Input Separation | 80 | - | 100 | dB |
| Volume Control Range | -47 | - | 0 | dB |
| Treble Control Range | -14 | - | +14 | dB |
| Mid-range Control Range | -14 | - | +14 | dB |
| Bass Control Range | -14 | - | +14 | dB |
| Balance Control Range | -79 | - | 0 | dB |
| Mute Attenuation | 80 | - | 100 | dB |
Key Features
- Input multiplexer with four stereo inputs and selectable input gain for optimal adaptation to different sources.
- Single stereo output.
- Tone control with treble, mid-range, and bass adjustments in 2-dB steps.
- Volume control in 1-dB steps with a range of -47 dB to 0 dB.
- Two independent speaker attenuators with 1-dB steps for balance facility and independent mute function.
- All functions are programmable via a serial bus (I2C interface).
- Low distortion and low noise due to BIPOLAR/CMOS technology.
Applications
The TDA7439DS is primarily used in high-quality audio applications such as car-radio systems and Hi-Fi systems. Its versatile control options and low noise characteristics make it suitable for a variety of audio processing needs where precise volume, tone, and balance adjustments are required.
Q & A
- What is the TDA7439DS used for? The TDA7439DS is a three-band digitally-controlled audio processor used for high-quality audio applications in car-radio and Hi-Fi systems.
- What are the key control features of the TDA7439DS? The TDA7439DS offers volume, tone (bass, mid-range, treble), and balance (left/right) controls.
- How is the TDA7439DS controlled? All functions of the TDA7439DS are programmable via a serial bus (I2C interface).
- What is the operating supply voltage range of the TDA7439DS? The operating supply voltage range is from 7 V to 10.2 V.
- What is the input resistance of the TDA7439DS? The input resistance ranges from 70 kΩ to 130 kΩ.
- What is the clipping level of the TDA7439DS at THD = 0.3%? The clipping level is between 2 V and 2.5 V RMS.
- How many stereo inputs does the TDA7439DS have? The TDA7439DS has four stereo inputs.
- What is the mute attenuation of the TDA7439DS? The mute attenuation is between 80 dB and 100 dB.
- What technology does the TDA7439DS employ? The TDA7439DS employs BIPOLAR/CMOS technology.
- What is the typical thermal resistance junction-pins of the TDA7439DS? The thermal resistance junction-pins is 85 °C/W.
