Datasheet > AK7722VQ

AK7722VQ

更新时间： 2022-10-09 14:23:38

品牌	Logo	应用领域
AKM		/
页数	文件大小	规格书
28页	450K
描述
24bit 4ch ADC + 24bit 4ch DAC with Audio DSP

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AK7722VQ 数据手册

[AK7722]

AK7722

24bit 4ch ADC + 24bit 4ch DAC with Audio DSP

GENERAL DESCRIPTION

The AK7722 is a digital signal processor with an integrated 4ch 24bit DAC, a stereo ADC with input selector

and a 2ch input ADC. The integrated 4ch DAC, the 2ch ADC with input selector and the other 2ch ADC

feature high performance achieving 108dB, 96dB and 95dB, respectively. The integrated SRC has three

input selector enabling the DSP to operate in master mode with digital inputs. The audio DSP has

1536step/fs (at 48kHz sampling) parallel arithmetic operation performance and the 5k-word delay RAM

allows surround processing and time alignment adjusting. As the AK7722 is a RAM based DSP, it is

programmable for various user requirements. It is housed in an 80pin LQFP package.

FEATURES

[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 → 44-bit Double precision arithmetic available

- Divider 20 / 20 → 20bit

- ALU: 48bit arithmetic operation (overflow margin 4bit) 20bit floating point arithmetic

and logic operation

- Program RAM: 3072 x 36bit

- Coefficient RAM: 2048 x 24bit (F24 floating point)

- Data RAM: 2048 x 24-bit (F24 floating point)

- Offset Register: 64 x 13bit

- Delay RAM1: 3072 x 24-bit

- Delay RAM2: 2048 x 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

[ADC1 Block]

- Stereo with 6 Inputs Selector

- DR, S/N: 96dB (fs = 48kHz, when differential input)

- S/(N+D): 90dB (fs = 48kHz)

- Differential & Single-ended Inputs

- Digital HPF (fc=1Hz)

- 6 Analog Inputs Selector (2 differential, 4 single-ended)

- Digital Volume Control (24dB ~ -103dB, 0.5dB Step, Mute)

[ADC2 Block]

- DR, S/N: 95dB (fs = 48kHz)

- Single-ended Inputs

- Digital Volume Control (24dB ~ -103dB, 0.5dB Step, Mute)

[SRC Block]

- 3 Pair of Stereo → 1 Stereo Pair Selector

- 2ch x 1 system

- Supporting frequency: Fin = 7.35kHz ~ 96kHz → Fout = 7.35kHz ~ 48kHz

(FSO/FSI = 0.167~ 6.0)

MS1328-E-00-PB

- 1 -

2011/09

12 3 4 5 6 7...28

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