AK7746

更新时间： 2024-02-01 05:22:11

品牌	Logo	应用领域
AKM		复用器微控制器和处理器数字信号处理器
页数	文件大小	规格书
62页	396K
描述
Audio DSP with 5-channel 24-bit ADC and Input Mux

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技术参数
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AK7746 技术参数

生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	LFQFP,	针数：	64
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.69	Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G64
长度：	10 mm	功能数量：	1
端子数量：	64	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	LFQFP	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE, FINE PITCH	认证状态：	Not Qualified
座面最大高度：	1.7 mm	最大供电电压 (Vsup)：	3.6 V
最小供电电压 (Vsup)：	3 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
宽度：	10 mm	Base Number Matches：	1

AK7746 数据手册

[ASAHI KASEI]

[AK7746]

AK7746

Audio DSP with 5-channel 24-bit ADC and Input Mux

1. General Description

The AK7746 is a highly integrated audio processor, including 5 A/D channels, an input mux that can select 2 stereo pairs

from 8 stereo inputs, and an on-chip DSP. High quality analog performance is provided by the ADC’s achieving 98dB

(48kHz) dynamic range. The A/D supports sampling frequencies from 8kHz to 96kHz. The AK7746 includes 72kbits of

SRAM for audio delay that is suitable for simulated surround functions and speaker compensation. The programmable

DSP allows up to 4608 execution lines per audio sample cycle at 8kHz, 768 lines at 48kHz, or 384 lines at 96kHz with

multiple functions per line. The AK7746 can be used to implement complete sound field control, such as echo, 3D,

parametric equalization, etc. It is packaged in a 64-lead LQFP.

2. Features

DSP:

Word length:

Instruction cycle time:

Multiplier:

24-bit (Data RAM)

27ns (768fs, fs=48kHz )

24 x 16 → 40-bit

Divider:

24 / 24 → 16-bit or 24-bit

34-bit arithmetic operation (Overflow margin: 4bit)

24-bit arithmetic and logic operation

1, 2, 3, 4, 6, 8 and 15 bits shifted left

1, 2, 3, 4, 8 and 15 bits shifted right

(Other numbers in parentheses are restricted.

Provided with indirect shift function)

768 x 32-bit

ALU:

Shift+Register:

Program RAM:

Coefficient RAM:

Data RAM:

1024 x 16-bit

256 x 24-bit

Offset RAM:

48 x 13-bit

(6144 x 12-bit / 3072 x 24-bit / 4096 x 12-bit + 1024 x 24-bit )

72kbit SRAM

Internal Memory:

Sampling frequency:

Serial interface port for micro-controller

Master clock:

Master/Slave operation

Serial signal input port ( 8(10) ch ):16/20/24-bit : Output port ( 8ch + 4ch ): 24-bit

8kHz to 96kHz

768fs@48kHz ( generated by PLL from 256fs or 384fs )

ADC: 4 channels (2 channels 2 sets )

24-bit 64 x Over-sampling delta sigma

Sampling frequency:

DR:

8kHz to 96kHz

98dBA ( fs=48 kHz Full-differential Input )

91dB ( fs= 48 kHz Full-differential Input )

S/N :

S/(N+D) :

Digital HPF (fc = 1Hz)

Single-ended or Full-differential Input

ADC: Monaural 1 channel

24-bit 64x Over-sampling delta sigma

Sampling frequency:

8kHz to 96kHz

DR:

97dBA ( fs=48 kHz )

91dB ( fs= 48 kHz )

S/N :

S/(N+D) :

Other

External Jump pin:

CRC error check function

LRCLK and BITCLK input and output for slave mode

Power supply:

Operating temperature range:

Package:

3(maximum)

+3.3V±0.3V

-40°C~85°C

64pin LQFP (0.5mm pitch)

[MS0369-E00]

- 1 -

2004/12

12 3 4 5 6 7...62

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