AK7604VQ

Audio DSP with 2chADC + 6chDAC + 8chSRC

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Description

AK7604VQThe AK7604 is a highly integrated digital signal processor, including a 24-bit stereo ADC with input selector, three 24-bit stereo DACs, four stereo sampling rate convertors supporting the sampling frequency up to 192kHz and an Audio DSP. The Audio DSP has 2560step/fs (when fs=48kHz) parallel processing power and freely programmable for user requirements. The AK7604 is available in a 48-pin LQFP package.

Key Features

□ Audio DSP:
- Word length:   28-bit (Simple floating point supported)
- Instruction cycle:  Max. 8.1ns (2560fs at fs=48kHz)
- Multiplier:   24 x 24 → 48-bit (Double precision arithmetic available)
- Divider:   24 / 24 → 24-bit (Floating point normalization function)
- ALU:    64-bit Arithmetic Operation (with 16bits overflow margin)
- Program RAM:   1024-word x 36-bit
- Coefficient RAM: 1024-word x 24-bit
- Data RAM:   6144-word x 28-bit
□ ADC: 24-bit Stereo ADC with Input Selector
- Sampling Frequency: fs = 8kHz ~ 96kHz
- Input Selector:  Differential Stereo Input or Single-end Input or Pseudo Differential Input with Analog Gain Amplifiers x 1, Single-ended Stereo Input x 2
- Channel Independent Analog Gain Amplifiers (0~18dB(2dB Step), 18~36dB(3dB Step))
- ADC Characteristics   S/N: 106dB (fs=48kHz, Differential Input, Analog Gain=0dB)
- Channel Independent Digital Volume Control (24dB ~ -103dB, 0.5dB Step, Mute)
- Digital HPF for DC Offset Cancelling
- 1Vrms Input Full Scale
- Low Noise MIC Power Output x 2
□ DAC: 24-bit DAC
- 2ch x 3
- Sampling Frequency: fs = 8kHz ~ 96kHz
- Single-ended Output
- 1Vrms Output
- DAC Characteristics S/N: 108dB (fs=48kHz)
- Channel Independent Digital Volume Control (12dB ~ -115dB, 0.5dB Step, Mute)
□ SRC:
- 2ch x 4
- FSI = 8kHz ~ 192kHz, FSO = 8kHz ~ 192kHz (FSO/FSI = 0.167 ~ 6.0)
□ Digital Interfaces
- Digital Input Port x 4 (TDM Support: 1 Port)
- Digital Output Port x 3 (TDM Support: 1 Port)
- Independent LRCK/BICK port x 3
- Data Format: MSB 32, 24bit / LSB 24, 20, 16bit / I2S / PCM Short Frame / PCM Long Frame
- TDM Input/Output Mode (Max: 8ch/256fs, fs=96kHz)

 
□ PLL Circuit
□ μP Interface: SPI(Max.6MHz) / I2C(400kHz Fast Mode)
□ Power Supply:
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       VDD33: 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 x 7mm, 0.5mm pitch)

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Block Diagram

Block Diagram

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