TDA7721：5 band car audio processor
The TDA7721 is a high performance signal processor specifically designed for car radio applications.
The device includes a high performance audio processor with fully integrated audio filters and new SoftStep architecture. The digital control allows programming in a wide range of filter characteristics.
Key Features
- Input multiplexer
- QD1 to QD2: quasi-differential stereo input
- SE1 to SE3: stereo single-ended input
- InGain
- Loudness
- 2nd
order frequency response
- Programmable center frequency (400 Hz / 800 Hz / 2400 Hz)
- 15 dB with 1 dB steps
- Selectable high frequency boost
- Selectable flat-mode (constant attenuation)
- Volume
- +23 dB to -79 dB with 1 dB step resolution
- SoftStep control with programmable blend times
- EQ1
- 2nd
order frequency response
- Center frequency programmable in 4 steps (63 Hz / 80 Hz/ 100 Hz /125 Hz)
- Q programmable in 4 steps (1.0/1.25/1.5/2.0)
- -15 to 15 dB range with 1 dB resolution
- EQ2
- 2nd
order frequency response
- Center frequency programmable in 4 steps (200 Hz/ 250 Hz/ 315 Hz/ 400 Hz)
- Q programmable in 4 steps (1.0/1.25/1.5/2.0)
- -15 to 15 dB range with 1 dB resolution
- EQ3
- 2nd
order frequency response
- Center frequency programmable in 4 steps (630 Hz/ 800 Hz/ 1 kHz/ 1.25 kHz)
- Q programmable in 4 steps (0.75/1.0/1.25/2)
- -15 to 15 dB range with 1 dB resolution
- EQ4
- 2nd
order frequency response
- Center frequency programmable in 4 steps (2 kHz/ 2.5 kHz/ 3.15 kHz/ 4 kHz)
- Q programmable in 4 steps (0.75/1.0/1.25/2)
- -15 to 15 dB range with 1 dB resolution
- EQ5
- 2nd
order frequency response
- Center frequency programmable in 4 steps (6.3 kHz/ 8 kHz / 10 kHz/ 12.5 kHz)
- Q programmable in 4 steps (0.75/1.0/1.25/2)
- -15 to 15 dB range with 1 dB resolution
- Highpass
- 2nd
order frequency response
- Center frequency programmable in 5 steps (63 Hz / 100 Hz / 120 Hz / 150 Hz/ 180 Hz)
- Subwoofer
- 2nd
order low pass filter
- Programmable cut off frequency
- (55 Hz / 85 Hz / 120 Hz / 160 Hz)
- Speaker
- 6 independent soft step speaker controls
- +15 dB to -79 dB with 1 dB steps
- Three selectable output DC level
- Direct mute
- Mute functions
- Direct mute
- Digitally controlled SoftMute with 4 programmable mute-times
- (0.48 ms / 0.96 ms / 8 ms / 16 ms)
- Offset detection
- Offset voltage detection circuit for on-board power amplifier failure diagnosis
Product Specifications
Sample & Buy
| Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| TDA7721TR | TSSOP28 9.7 x 4.4 | Tape And Reel | - | - | - | - | NEC | EAR99 | TAIWAN |
| TDA7721 | TSSOP28 9.7 x 4.4 | Tube | - | - | - | - | NEC | EAR99 | TAIWAN |
Quality & Reliability
