Overview
The TDA7439DS is a volume, tone (bass, mid-range, and treble), and balance (left/right) processor designed for high-quality audio applications in car-radio and Hi-Fi systems. This component employs BIPOLAR/CMOS technology to ensure low distortion, low noise, and DC stepping. All functions of the TDA7439DS are controlled via a serial bus, allowing for precise and programmable control over various audio parameters.
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 |
| Supply Current (IS) | 4 | 7 | 10 | mA |
| Ripple Rejection (SVR) | 60 | 90 | - | dB |
| Input Resistance (RIN) | 70 | 100 | 130 | kΩ |
| Clipping Level (VCL) | 2 | - | 2.5 | V RMS |
| Total Harmonic Distortion (THD) | 0.01 | - | 0.1 | % |
| Signal to Noise Ratio (S/N) | 95 | - | 106 | dB |
| Channel Separation (SC) | 80 | - | 100 | dB |
| Input Gain | 0 | - | 30 | dB (in 2 dB steps) |
| Volume Control | -47 | - | 0 | dB (in 1 dB steps) |
| Treble Control | -14 | - | +14 | dB (in 2 dB steps) |
| Mid-range Control | -14 | - | +14 | dB (in 2 dB steps) |
| Bass Control | -14 | - | +14 | dB (in 2 dB steps) |
| Balance Control | -79 | - | 0 | dB (in 1 dB steps) |
| Mute Attenuation | 80 | - | 100 | dB |
Key Features
- Input Multiplexer: Four stereo inputs with selectable input gain for optimal adaptation to different sources.
- Volume Control: Volume control in 1-dB steps, with a range of -47 dB to 0 dB and mute function.
- Tone Control: Treble, mid-range, and bass control in 2-dB steps.
- Speaker Attenuators: Two independent speaker controls in 1-dB steps for balance facility and independent mute function.
- Serial Bus Control: All functions are programmable via a serial bus.
- Low Distortion and Noise: Employs BIPOLAR/CMOS technology to provide low distortion, low noise, and DC stepping.
Applications
The TDA7439DS is designed for quality audio applications in:
- Car-radio systems
- Hi-Fi systems
It is particularly suited for environments where precise control over volume, tone, and balance is required.
Q & A
- 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 temperature range for the TDA7439DS?
The operating ambient temperature range is from 0°C to 70°C, and the storage temperature range is from -55°C to 150°C.
- How many stereo inputs does the TDA7439DS have?
The TDA7439DS has four stereo inputs.
- What is the step resolution for the volume control?
The volume control has a step resolution of 1 dB.
- Can the tone controls be adjusted in fine steps?
Yes, the treble, mid-range, and bass controls can be adjusted in 2-dB steps.
- How is the TDA7439DS controlled?
All functions of the TDA7439DS are controlled via a serial bus.
- What is the maximum input signal handling of the TDA7439DS?
The maximum input signal handling is 2 V RMS.
- What is the signal to noise ratio of the TDA7439DS?
The signal to noise ratio is up to 106 dB.
- Does the TDA7439DS support independent speaker controls?
Yes, it has two independent speaker controls in 1-dB steps for balance facility and an independent mute function.
- What technology does the TDA7439DS employ to reduce distortion and noise?
The TDA7439DS employs BIPOLAR/CMOS technology to provide low distortion, low noise, and DC stepping.
