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Audio Processor
AK7734
Audio DSP with 2-Channel ADC/SRC
The AK7734 is a highly integrated audio digital signal processor with integrated 2ch 24bit ADC and 2ch SRC. It includes internal memories for digital audio processing, that allows surround effect process, time alignment and parametric equalizing. More over, the AK7734 can process both data and filter coefficients as floating point data so that high accuracy IIR/FIR filter performance can be achieved easily. The internal SRC has various sampling rate converting modes, corresponds many sampling rates without changing the DSP operating sampling frequency. The AK7734 can operate a hands-free software by AKM, as well as sound processing, by programs downloaded via the microprocessor interface.
AK7734
  • Applications: Car Audio, PND and Hands Free Applications
  • DSP Block
    - Word length: 24bit (Coefficient RAM & Data RAM: F24 floating point)
    - Processing Speed: 13.6 ns (1536step/fs; fs = 48kHz)
    - Multiplication: 20 x 24 arrow 44-bit Double precision arithmetic available
    - Divider 20 / 20 arrow 20bit
    - ALU: 48bit arithmetic operation (overflow margin 4bit) 20bit floating point arithmetic and logic operation
    - Program RAM: 3072 24bit
    - Coefficient RAM: 2048 24bit (F24 floating point)
    - Data RAM: 2048 24-bit (F24 floating point)
    - Offset Register: 64 13bit
    - Delay RAM1: 3072 24-bit
    - Delay RAM2: 2048 24-bit
    - Sampling rate: fs= 7.35k ~ 48kHz
    - Master Clock: 1536fs
    (generated from 32fs, 48fs, 64fs, 128fs, 256fs, 384fs by internal PLL)
    - Master/Slave Operation
  • ADC Block
    - 64 times Over sampling
    - 24bit 2ch
    - Sampling rate: 7.35 ~ 48kHz
    - S/(N+D): 83dB (fs = 48kHz)
    - DR, S/N: 96dB (fs = 48kHz)
    - Integrated DC offset canceling High Pass Filter
  • SRC Block
    - 2ch 1 system
    - Support frequency: Fin = 7.35kHz ~ 96kHz arrow Fout = 7.35kHz ~ 48kHz
    (FSO/FSI = 0.167~ 6.0)
  • Digital Interface Input/Output
    - 8ch Serial Data Input
    - 8ch Serial Data Output
  • Micro Computer Interface
    - I2C Interface or 4-wired Interface
  • General
    - Integrated PLL
    - Integrated Regulator 3.3V arrow 1.8V
    - Power Supply: 3.3V ± 0.3V
    - Operating Temperature Range: -40°C ~ 85°C
    - 48pin LQFP
  • Evaluation Board: AKD7734
PDF
Download		 PDF Data Sheets
Rev. MS1033-E-02-PB 2010/01
PDF : 464KB / 24pages		    
AK7734 BLOCK DIAGRAM
AK7734 BLOCK DIAGRAM
To inquire for this product  |  USA   /   English