Overview
The TDA7715 is a high-performance signal processor specifically designed for car radio applications. Developed by STMicroelectronics, this device integrates a comprehensive audio processor with fully integrated audio filters and a new soft-step architecture. It offers digital control, allowing for a wide range of programmable filter characteristics, making it highly versatile for automotive audio systems.
Key Specifications
| Parameter | Description |
|---|---|
| Package | LQFP64 (10x10x1.4mm) |
| Input Types | Quasi-differential stereo inputs (QD0 to QD3), Single-ended stereo inputs (SE0 to SE4) |
| Loudness | Programmable center frequency (400 Hz/800 Hz/2400 Hz), 15 dB with 1 dB steps, Selectable high frequency boost, Flat-mode (constant attenuation) |
| Volume | +23 dB to –23 dB with 1 dB step resolution, Soft-step control with programmable blend times |
| Bass | Programmable center frequency (60/70/80/100/110/120/130/150 Hz), Q programmable (1.0/1.25/1.5/2.0), DC gain programmable (-15 to 15 dB range with 1 dB resolution) |
| Middle | Programmable center frequency (500 Hz/1 kHz/1.5 kHz/2 kHz), Q programmable (1.0/2.0), -15 to 15 dB range with 1 dB resolution |
| Treble | Center frequency programmable in 4 steps (10/12.5/15/17.5 kHz), -15 to 15 dB range with 1 dB resolution |
| High Pass Filter | Programmable cut off frequency (50/60/80/100/120/150/180/220 Hz) |
| Low Pass Filter | Programmable cut off frequency (50 Hz/60 Hz/80 Hz/100 Hz/120 Hz) |
| Speaker Control | 6 independent soft-step speaker controls, +23 dB to –79 dB with 1 dB steps |
| Output Driver | Four dedicated outputs for internal power amplifier, Six 3.55 VRMS line-driver outputs for external power amplifier |
| Mute Functions | Direct mute, Digitally controlled soft-mute with programmable mute-times |
| Spectrum Analyzer | 7-band, fully integrated 2nd order band-pass filter with programmable filter quality |
| AC Coupling | Three AC-coupling inputs, One AC-coupling output |
| Offset Detection | Offset voltage detection circuit for on-board power amplifier failure diagnosis |
Key Features
- Input Multiplexer: Supports quasi-differential and single-ended stereo inputs.
- Loudness Control: Programmable center frequency, high frequency boost, and flat-mode.
- Volume Control: +23 dB to –23 dB with 1 dB step resolution and soft-step control.
- Bass, Middle, and Treble Adjustments: Programmable center frequencies and Q factors.
- Filters: High pass and low pass filters with programmable cut-off frequencies.
- Speaker Control: 6 independent soft-step speaker controls.
- Output Driver: Dedicated outputs for internal and external power amplifiers.
- Mute Functions: Direct mute and digitally controlled soft-mute with programmable mute times.
- Spectrum Analyzer: 7-band, fully integrated 2nd order band-pass filter.
- AC Coupling: Multiple AC-coupling inputs and outputs.
- Offset Detection: Offset voltage detection for power amplifier failure diagnosis.
Applications
The TDA7715 is specifically designed for car radio applications, offering advanced audio processing capabilities that enhance the overall audio experience in automotive systems. It is suitable for use in various automotive infotainment systems where high-quality audio processing is required.
Q & A
- What is the primary application of the TDA7715?
The TDA7715 is primarily designed for car radio applications.
- What types of input does the TDA7715 support?
The TDA7715 supports quasi-differential and single-ended stereo inputs.
- What are the key features of the loudness control in the TDA7715?
The loudness control features programmable center frequency, high frequency boost, and flat-mode.
- What is the range of volume control in the TDA7715?
The volume control ranges from +23 dB to –23 dB with 1 dB step resolution.
- Does the TDA7715 have built-in filters?
Yes, it includes high pass and low pass filters with programmable cut-off frequencies.
- How many independent speaker controls does the TDA7715 have?
The TDA7715 has 6 independent soft-step speaker controls.
- What types of output drivers are available in the TDA7715?
The TDA7715 has dedicated outputs for internal and external power amplifiers.
- Does the TDA7715 support mute functions?
Yes, it supports direct mute and digitally controlled soft-mute with programmable mute times.
- What is the purpose of the spectrum analyzer in the TDA7715?
The spectrum analyzer is a 7-band, fully integrated 2nd order band-pass filter with programmable filter quality.
- Does the TDA7715 have AC coupling capabilities?
Yes, it has multiple AC-coupling inputs and outputs.
- What is the offset detection feature used for in the TDA7715?
The offset detection feature is used for on-board power amplifier failure diagnosis.
