AK7604VQ: An audio processor that supports high-resolution sound source playback for automotive heads. Company advantage inventory.

The AK 7604 is a highly integrated digital signal processor that includes a 24-bit stereo ADC with input selector, three 24-bit stereo DACS, four stereo sample rate converters supporting 192 kHz sampling frequency, and an audio DSP. Audio DSP has 2560 order/fs (fs=48 kHz) parallel processing capability, which can be freely programmed according to user requirements. The AK 7604 is available in a 48-pin LQFP package.

The AK 7604 is an audio processor for processing high-resolution music sources in car audio systems. The AK 7604 adopts some specifications of the AK 7738's DSP core, audio I/O, A/D converter and D/A converter.

The functionality has been optimized and streamlined, using only the audio blocks from the AK 7604. This part is suitable for entry or consumer grade car audio/navigation systems. This is the successor to the AK 7602.

28-bit pseudo-floating-point arithmetic implements various sound effects.

Audio processing parameters can be easily adjusted.

Audio systems can be built flexibly.

Package: 48-pin LQFP (7x7mm, 0.5mm pitch)

Features:

Audio DSP:

Word length: 28 bits (supports simple floating point)

- Teaching period: max. 8.1ns (fs=48 kHz, 2560 fs)

- Multiplier: 24x24→48 bits (double precision arithmetic available)

- Divider: 24/24 → 24 bits (floating point normalization function)

-ALU: 64-bit arithmetic operations (16-bit overflow margin)

- Program RAM: 1024 words x 36 bits

- Coefficient RAM: 1024 words x 24 bits

- Data RAM: 6144 words x 28 bits

- ADC: 24-bit stereo analog-to-digital converter with input selector

- Sampling frequency: FS=8 kHz~96 kHz

- Input selector: differential stereo input or single-ended input or pseudo differential input with analog gain amplifier x1, single-ended stereo input x2

- Channel independent analog gain amplifier (0~18 dB (2dB steps), 18~36 dB (3dB steps)

-ADC characteristic S/N: 106 dB (fs=48 kHz, differential input, analog gain=0dB)

- Channel independent digital volume control (24 dB~-103 dB, 0.5dB step, MUTE)

- Digital HPF for DC offset cancellation

-1 Vrms full input

- Low noise MIC power output x2

- DAC: 24 DAC

-2 Gigabit x3

- Sampling frequency: FS=8 kHz~96 kHz

- single-ended output

-1 Vrms output

-DAC characteristic S/N: 108 dB (fs=48 kHz)

- Channel independent digital volume control (12 dB~-115 dB, 0.5dB step, MUTE)

-SRC:

-2 gigabit x4

-FSI=8 kHz~192 kHz, FSO=8 kHz~192 kHz (FSO/FSI=0.167~6.0)

-Digital interface

- Digital input port x4 (TDM support: 1 port)

- Digital output port x3 (TDM support: 1 port)

- Independent LRCK/Bick ports x3

- Data format: MSB 32, 24-bit/LSB 24, 20, 16-bit/I2S/PCM short frame/PCM long frame

-TDM input/output mode (maximum: 8ch/256 fs, fs=96 kHz)

Phase Locked Loop Circuit

-μP interface: SPI (max 6MHz)/I2C (400 Khz fast mode)

-powered by:

Analog: AVDD: 3.0V~3.6V (Typ.3.3V)

Digital: LVDD: 3.0V~3.6V (Typ.3.3V) (3.3V→1.2V internal regulator)

I/F VDD 33: 3.0V~3.6V(Typ.3.3V)

TVDD: 1.7V~3.6V(Typ.3.3V)

- Operating temperature range: -40~85℃

- Package: 48-pin LQFP (7mm×7mm, 0.5mm pitch)