Description

The TDA7418TR is a special purpose audio IC that includes a high performance audio processor with fully integrated 3-band filters to process signals at audible frequencies. With its digital control, it allows for full programming of the audio processor and filter characteristics.

Specifications and features:

- Input Multiplexer:

• PD/SE4: pseudo differential stereo input, programmable as single-ended input
• SE1: stereo single-end input
• SE2: stereo single-end input
• SE3: stereo single-end input
• Input gain adjust from 0 to 15dB with 1dB steps
• Internal offset-cancellation (AutoZero)

- Loudness:

• Second order frequency response
• Programmable center frequency (400Hz/800Hz/2400Hz)
• 15dB with 1dB steps
• Selectable low & high frequency boost
• Selectable flat-mode (constant attenuation)

- Volume:

• +15dB to -79dB with 1dB step resolution
• Soft-step control with programmable blend times

- Bass:

• Second order frequency response
• Center frequency programmable in 4 steps (60Hz/80Hz/100Hz/200Hz)
• Q programmable 1.0/1.25/1.5/2.0
• DC gain programmable
• -15 to 15dB range with 1dB resolution

- Middle:

• Second order frequency response
• Center frequency programmable in 4 steps (500Hz/1KHz/1.5KHz/2.5KHz)
• Q programmable 0.5/0.75/1.0/1.25
• -15 to 15dB range with 1dB resolution

- Treble:

• Second order frequency response
• Center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz)
• -15 to 15dB range with 1dB resolution

- Speaker:

• 4 independent soft step speaker controls, +15dB to -79dB with 1dB steps
• Direct mute

- Subwoofer:

• Single-ended mono output
• Independent soft step level control, +15dB to -79dB with 1dB steps

- Mute Functions:

• Direct mute
• Digitally controlled SoftMute with 3 programmable mute times (0.48ms/0.96ms/123ms)

Application Scenarios:

The TDA7418TR is ideal for various audio applications, such as car audio systems, home theater systems, and portable audio devices. It provides a wide range of features and programmable options for audio processing and filtering, making it suitable for different scenarios and user preferences.

Comparison:

Advantages:

• High-performance audio processor
• Fully integrated 3-band filters
• Digital control for full programming
• Wide range of input options
• Programmable loudness and EQ settings
• Soft-step volume control for smooth adjustments
• Additional features like speaker and subwoofer controls

Disadvantages:

• May require technical expertise for optimal programming and setup
• Limited to audio processing and filtering, not a standalone audio device
• Not suitable for applications requiring advanced signal processing or specific audio effects