Overview
The TDA7400DTR from STMicroelectronics is an advanced car signal processor designed for optimal performance in car radio applications. This integrated circuit is part of the CSP (Car Signal Processor) family and is known for its innovative design and software programmability via the I2C bus. The device integrates an audioprocessor, a stereo decoder with noise blanker and multipath detector, and sophisticated stereoblend and noise cancellation circuitry. It offers high flexibility, cost optimization, and significant space savings in system design.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Supply Voltage (VS) | 7.5 | 9 | 10 | V |
| Operating Ambient Temperature Range (Tamb) | -40 | 85 | °C | |
| Supply Current (IS) at VS = 9V | 25 | 30 | 35 | mA |
| Ripple Rejection @ 1KHz (Audioprocessor) | 50 | 60 | dB | |
| Ripple Rejection @ 1KHz (Stereodecoder + Audioprocessor) | 45 | 55 | dB | |
| Thermal Resistance Junction-pins (Rth-j pins) | 85 | °C/W |
Key Features
- Fully programmable by I2C bus, allowing for extensive configuration and control.
- Includes an audioprocessor with configurable inputs and no need for external components for filter settings.
- Features a last-generation stereo decoder with multipath detector and sophisticated stereoblend and noise cancellation circuitry.
- Programmable roll-off compensation and noise blanker with adjustable trigger threshold.
- Digital control over bass and treble with adjustable control ranges and step resolutions.
- Soft mute function with programmable slope to avoid audible clicks during muting.
- Integrated FM stereodecoder input, level input, and multipath input/output.
- ESD protection on all pins according to the MIL883 standard.
Applications
The TDA7400DTR is optimized for car radio applications, providing advanced signal processing capabilities. It is suitable for use in:
- Car audio systems requiring high-quality stereo decoding and noise reduction.
- Systems needing programmable audio processing and flexible input configurations.
- Applications where space and cost optimization are critical.
Q & A
- What is the operating supply voltage range for the TDA7400DTR?
The operating supply voltage range is from 7.5V to 10V.
- What is the typical supply current at 9V supply voltage?
The typical supply current at 9V is 30mA.
- What type of bus is used for programming the TDA7400DTR?
The TDA7400DTR is programmed via the I2C bus.
- Does the TDA7400DTR require external components for filter settings?
No, the TDA7400DTR does not require external components for filter settings.
- What are the key components of the TDA7400DTR's signal processing capabilities?
The key components include an audioprocessor, a stereo decoder with noise blanker and multipath detector, and sophisticated stereoblend and noise cancellation circuitry.
- How is the soft mute function controlled in the TDA7400DTR?
The soft mute function is controlled via the I2C bus and can also be activated by the softmute pin.
- What is the thermal resistance junction-pins (Rth-j pins) of the TDA7400DTR?
The thermal resistance junction-pins is 85°C/W.
- Does the TDA7400DTR have ESD protection?
- What are the primary applications of the TDA7400DTR?
The primary applications are in car radio systems requiring advanced signal processing and noise reduction.
- Can the TDA7400DTR be used in other applications besides car radios?
While it is optimized for car radio applications, its features make it suitable for other audio processing systems requiring similar capabilities.
