Overview
The TDA7718B is a high-performance signal processor specifically designed for car radio applications. It features a fully integrated audioprocessor with advanced audio filters and a new soft-step architecture. This device is tailored to enhance audio quality in automotive systems, offering a wide range of programmable filter characteristics through digital control.
Key Specifications
| Parameter | Description |
|---|---|
| Package | TSSOP-28 |
| Grade | Automotive |
| RoHS Compliance Grade | Ecopack2 |
| Operating Temperature (°C) | -40 to 105 |
| Supply Voltage (V) | 8.5 V (typical) |
| Volume Control Range | +23 dB to -31 dB with 1 dB step resolution |
| Bass Control | Center frequency programmable in 4 steps (60 Hz / 80 Hz / 100 Hz / 200 Hz), Q programmable 1.0/1.25/1.5/2.0 |
| Middle Control | Center frequency programmable in 4 steps (500 Hz / 1 kHz / 1.5 kHz / 2.5 kHz), Q programmable 0.75/1.0/1.25 |
| Treble Control | Center frequency programmable in 4 steps (10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz) |
| Speaker Control | 4 independent soft-step speaker controls, +15 dB to -79 dB with 1 dB steps |
| Subwoofer Filter | 2nd order low pass filter with programmable cut off frequency (55 Hz / 85 Hz / 120 Hz / 160 Hz) |
Key Features
- Input Multiplexer: Supports quasi-differential stereo inputs (QD1), and multiple stereo single-ended inputs (SE1, SE2, SE3), as well as full-differential or quasi-differential input (FD).
- Loudness Control: 2nd order frequency response, programmable center frequency (400 Hz / 800 Hz / 2400 Hz), 15 dB with 1 dB steps, and selectable high frequency boost or flat-mode.
- Volume Control: +23 dB to -31 dB with 1 dB step resolution, soft-step control with programmable blend times.
- Bass, Middle, and Treble Controls: Each with 2nd order frequency response and programmable center frequencies and Q factors.
- Speaker Control: 4 independent soft-step speaker controls, +15 dB to -79 dB with 1 dB steps, and direct mute.
- Subwoofer Filter: 2nd order low pass filter with programmable cut off frequency, and 2 independent soft-step level controls.
- Mute Functions: Direct mute and digitally controlled soft-mute with 4 programmable mute-times.
- Offset Detection: Offset voltage detection circuit for on-board power amplifier failure diagnosis.
Applications
The TDA7718B is specifically designed for car radio applications, enhancing the audio quality and providing comprehensive control over various audio parameters. It is ideal for use in automotive infotainment systems where advanced audio processing is required.
Q & A
- What is the primary application of the TDA7718B?
The TDA7718B is primarily designed for car radio applications to enhance audio quality in automotive systems.
- What types of input does the TDA7718B support?
The device supports quasi-differential stereo inputs, multiple stereo single-ended inputs, and full-differential or quasi-differential inputs.
- What is the range of the volume control?
The volume control ranges from +23 dB to -31 dB with 1 dB step resolution.
- Can the bass, middle, and treble frequencies be programmed?
- What is the function of the subwoofer filter?
The subwoofer filter is a 2nd order low pass filter with programmable cut off frequencies and independent soft-step level controls.
- Does the TDA7718B have mute functions?
- What is the purpose of the offset detection feature?
The offset detection feature is used for on-board power amplifier failure diagnosis.
- What is the package type of the TDA7718B?
The TDA7718B is packaged in a TSSOP-28 package.
- Is the TDA7718B RoHS compliant?
- What is the operating temperature range of the TDA7718B?
