AK7742

更新时间： 2024-09-19 06:36:55

品牌	Logo	应用领域
AKM		/
页数	文件大小	规格书
16页	340K
描述
24bit 2ch ADC + 24bit 4ch DAC with Audio DSP

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

AK7742 数据手册

[AK7742]

= Preliminary =

AK7742

24bit 2ch ADC + 24bit 4ch DAC with Audio DSP

GENERAL DESCRIPTION

The AK7742 is a highly integrated audio digital processor, including two stereo 24bit DAC’s and one

stereo ADC with input selector. The stereo DAC and ADC feature high performance, archiving 106dB and

96dB dynamic range respectively, 8kHz to 96kHz sampling rate are supported. The audio DSP has

1536step/fs parallel processing power, and 74k-bit delay memory allows surround processing, acoustic

effect and parametric equalizers. As the AK7742 is a RAM based DSP, it is programmable for user

requirements. The AK7742 is available in a space saving small 48pin LQFP package.

FEATURES

■ DSP:

- Word length: 24bit (Data RAM 24bit floating point)

- Instruction cycle: 13.6 ns (1536step/fs fs=48kHz; 9216step/fs fs=8kHz)

- Multiplier 20 x 16 → 36bit (double precision available)

- Divider 20 / 20 → 20bit

- ALU: 40bit arithmetic operation (overflow margin 4bit) 24bit floating point arithmetic and

logic operation

- Program RAM: 1536 x 36bit

- Coefficient RAM: 1536 x 16bit

- Data RAM: 1536 x 24-bit (24bit floating point)

- Delay RAM: 74kbit (3072 x 24bit)

- Sampling frequency: 8kHz ~ 96kHz

- Master / Slave operation

- Serial signal input port (4ch) MSB justified 24bit / LSB justified 24 / 20 / 16bit and I²S

- Serial signal output port (6ch) MSB justified 24bit / LSB justified 24 / 16bit and I²S

■ ADC: 2ch (stereo)

- 24bit 64 x Over-sampling delta sigma (fs=8kHz~48kHz)

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

- S/(N+D): 84dB (fs=48kHz)

- Differential, Single-end Inputs

- Digital HPF (fc=1Hz)

- 3:1 Analog input selector

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

■ DAC: 4ch (two stereo pairs)

- 24bit 128 x Over-sampling advanced multi-bit (fs=8kHz~96kHz)

- DR, S/N: 106dB

- S/(N+D): 92dB

- Differential output

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

■ DSP Through Mode

■ I²C BUS interface for micro-controller

■ Power supply: +3.3V ±0.3V, internal regulator for 1.8V

■ Operating temperature range: -20°C~70°C

■ Package: 48pin LQFP (0.5mm pitch)

Rev.0.5b_PB

2008/08

- 1 -

12 3 4 5 6 7...16

中文翻译

下载PDF

与AK7742相关器件

型号	品牌	获取价格	描述	数据表
AK7742EN	AKM	获取价格	Consumer Circuit, 0.40 MM PITCH, QFN-48
AK7742EQ	AKM	获取价格	24bit 2ch ADC + 24bit 4ch DAC with Audio DSP
AK7744VT	AKM	获取价格	24bit 3ch ADC + 24bit 4ch DAC with Audio DSP
AK7746	AKM	获取价格	Audio DSP with 5-channel 24-bit ADC and Input Mux
AK7746VT	AKM	获取价格	Audio DSP with 5-channel 24-bit ADC and Input Mux
AK7750	AKM	获取价格	Audio DSP with Built-in Hands-Free Phone Features
AK7750VT	AKM	获取价格	Audio DSP with Built-in Hands-Free Phone Features
AK7752	AKM	获取价格	Audio/Hands Free DSP with Stereo CODEC
AK7752VQ	AKM	获取价格	Audio/Hands Free DSP with Stereo CODEC
AK7753ET	AKM	获取价格	Telecom Circuit, 1-Func, PQFP64, LEAD FREE, LQFP-64