Overview
The TDA7433D, produced by STMicroelectronics, is a sophisticated audio processor designed for high-quality audio applications in car radios and Hi-Fi systems. This integrated circuit offers comprehensive control over volume, tone (bass and treble), and balance (Left/Right) functions. It features a robust set of inputs, including two stereo inputs and one mono input, along with advanced control mechanisms via an I2C bus interface. The TDA7433D is built using advanced BIPOLAR/CMOS technology, which minimizes the need for external components, enhancing overall system efficiency and reliability.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VS) | 7 | 9 | 10.2 | V |
| Operating Temperature Range (Tamb) | -40 | 85 | °C | |
| Storage Temperature Range (Tstg) | -55 | 150 | °C | |
| Max. Input Signal Handling (VCL) | 1.3 | 1.6 | Vrms | |
| Total Harmonic Distortion (THD) | 0.05 | % | ||
| Signal to Noise Ratio (S/N) | 102 | dB | ||
| Channel Separation (Sc) | 100 | dB | ||
| Volume Control Range | -79 | +32 | dB | |
| Bass Control Range | -18 | +18 | dB | |
| Treble Control Range | -14 | +14 | dB | |
| Speaker Attenuators Range | 0 | -37.5 | dB | |
| Mute Attenuation | 100 | dB |
Key Features
- Multiple Inputs: Two stereo inputs and one mono input, with the mono input capable of acting as a hardware mute pin.
- Volume Control: Programmable volume control from +32dB to -79dB in 1dB steps.
- Tone Control: Bass control from -18dB to +18dB and treble control from -14dB to +14dB, both in 2dB steps.
- Speaker Attenuators: Four independent speaker attenuators with control from 0 to -37.5dB.
- Mute Function: Software and hardware mute functions, including a special mute bit for speaker attenuators.
- I2C Interface: All functions are programmable via an I2C bus interface with a maximum clock speed of 500kbits/s.
- Low Distortion Outputs: Four low distortion push-pull outputs capable of driving a 3kΩ load.
Applications
- Automotive Audio: Ideal for car radio systems requiring advanced audio processing.
- Consumer Audio: Suitable for Hi-Fi systems and other consumer audio equipment needing precise volume, tone, and balance control.
Q & A
- What is the operating supply voltage range of the TDA7433D?
The operating supply voltage range is from 7V to 10.2V.
- What is the operating temperature range of the TDA7433D?
The operating temperature range is from -40°C to 85°C.
- How many inputs does the TDA7433D have?
The TDA7433D has two stereo inputs and one mono input.
- What is the range of the volume control?
The volume control ranges from +32dB to -79dB in 1dB steps.
- How does the mute function work?
The mute function can be activated via software or hardware, with the hardware mute possible by grounding the AM input when AM is not selected.
- What is the interface protocol used by the TDA7433D?
The interface protocol is I2C, with a maximum clock speed of 500kbits/s.
- What is the range of the bass and treble controls?
The bass control ranges from -18dB to +18dB, and the treble control ranges from -14dB to +14dB, both in 2dB steps).
- How many speaker attenuators does the TDA7433D have?
The TDA7433D has four independent speaker attenuators).
- What is the maximum load that the output can drive?
The outputs can drive a load of 3kΩ).
- In what package is the TDA7433D available?
The TDA7433D is available in a 20-SOIC package).
