Overview
The TDA7440D is a volume tone (bass and treble) balance (Left/Right) processor designed for quality audio applications in Hi-Fi systems. It features selectable input gain and control of all functions via a serial bus. The device utilizes BIPOLAR/CMOS technology, ensuring low distortion, low noise, and precise DC stepping. The AC signal setting is achieved through resistor networks and switches combined with operational amplifiers.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VS) | 6 | 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 | - | Vrms |
| 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 (Gin) | 0 | 30 | - | dB (2dB steps) |
| Volume Control Range | -47 | 0 | - | dB (1dB steps) |
| Treble Control Range | -14 | +14 | - | dB (2dB steps) |
| Bass Control Range | -14 | +14 | - | dB (2dB steps) |
| Mute Attenuation | 100 | - | - | dB |
Key Features
- Input Multiplexer: 4 stereo inputs with selectable input gain for optimal adaptation to different sources.
- Volume Control: Adjustable in 1.0dB steps from 0 to -47dB (including mute function).
- Tone Control: Treble and bass control in 2.0dB steps.
- Speaker Attenuators: Two independent speaker controls in 1.0dB steps for balance facility and independent mute function.
- Programmability: All functions are programmable via a serial bus (I2C interface).
- Low Distortion and Noise: Achieved through BIPOLAR/CMOS technology.
- Output: One stereo output.
Applications
The TDA7440D is designed for quality audio applications in Hi-Fi systems. It is particularly suitable for systems requiring precise volume, tone, and balance control. The device can be used in various audio equipment such as home audio systems, car audio systems, and professional audio gear where high-quality audio processing is essential.
Q & A
- What is the TDA7440D used for?
The TDA7440D is a volume tone (bass and treble) balance (Left/Right) processor for quality audio applications in Hi-Fi systems.
- How many stereo inputs does the TDA7440D have?
The TDA7440D has 4 stereo inputs.
- What is the range of the volume control?
The volume control range is from 0 to -47dB in 1.0dB steps, including a mute function.
- How is the tone control adjusted?
The treble and bass control are adjustable in 2.0dB steps.
- What type of technology is used in the TDA7440D?
The TDA7440D uses BIPOLAR/CMOS technology.
- How are the functions of the TDA7440D controlled?
All functions are controlled via a serial bus (I2C interface).
- What is the operating supply voltage range of the TDA7440D?
The operating supply voltage range is from 6V to 10.2V.
- What is the maximum input signal handling of the TDA7440D?
The maximum input signal handling is 2Vrms.
- What is the total harmonic distortion (THD) of the TDA7440D?
The total harmonic distortion (THD) is 0.01% to 0.1% at 1Vrms and 1KHz.
- What is the signal to noise ratio (S/N) of the TDA7440D?
The signal to noise ratio (S/N) is 95 to 106 dB.
