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AD1941

更新时间： 2024-02-05 11:31:23

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	312K
描述
SigmaDSP-TM Multichannel 28-Bit Audio Processor

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AD1941 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	LEAD FREE, PLASTIC, MS-026BBC, LQFP-48	针数：	48
Reach Compliance Code：	unknown	风险等级：	5.82
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G48
JESD-609代码：	e3	长度：	7 mm
湿度敏感等级：	3	功能数量：	1
端子数量：	48	最高工作温度：	105 °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	峰值回流温度（摄氏度）：	260
认证状态：	COMMERCIAL	座面最大高度：	1.6 mm
最大供电电压 (Vsup)：	2.75 V	最小供电电压 (Vsup)：	2.25 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	40	宽度：	7 mm

AD1941 数据手册

AD1941

Preliminary Technical Data

FEATURES

The core of the AD1941 is a 28-bit DSP (56-bit with double

precision) optimized for audio processing.

The AD1941 contains eight independent data capture circuits

that can be programmed to tap the signal flow of the processor

at any point in the DSP algorithm flow. Six of these captured

signals can be accessed by reading from the data capture

registers through the control port. The remaining two data

capture registers can be used to send any internal captured

signal to a stereo digital output signal on Pin SDATA_OUT7 for

driving external DACs or digital analyzers.

The AD1941 contains a program RAM that is initialized from

an internal program ROM on power-up. The program RAM

can be loaded with a custom program after power-up. Signal

processing parameters are stored in a 1024-location parameter

RAM, which is initialized on power-up by an internal boot-

ROM. New values are written to the parameter RAM using the

control port. The values stored in the parameter RAM control

individual signal processing blocks, such as IIR equalization

filters, dynamics processors, audio delays, and mixer levels. A

safeload feature allows parameters to be transparently updated

without causing clicks on the output signals.

The AD1941 has very flexible serial data input/output ports that

allows for glueless interconnection to a variety of ADCs, DACs,

general-purpose DSPs, S/PDIF receivers, and sample rate

converters. The AD1941 can be configured in I²S, left-justified,

right-justified, or TDM serial port compatible modes. It can

support 16, 20, and 24 bits in all modes. The AD1941 accepts

serial audio data in MSB first and twos complement format.

The target/slew RAM contains 64 locations and can be used as

channel volume controls or for other parameter updates. These

RAM locations take a target value for a given parameter and

ramp the current parameter value to the new value using a

specified time constant and one of a selection of linear or

logarithmic curves.

The AD1941 operates from a single 2.5 V power supply. It is

fabricated on a single monolithic integrated circuit and is

housed in a 48-lead LQFP package for operation over the

–40°C to +105°C temperature range.

The AD1941 has a sophisticated control port that supports

complete read/write capability of all memory locations. Five

control registers (core, RAM configuration, Serial Output 0 to 7,

Serial Output 8 to 15, and serial input) are provided to offer

complete control of the chip’s configuration and serial modes.

Handshaking is included for ease of memory

uploads/downloads.

DATA MEMORY

6k × 28

TARGET/SLEW

RAM

28 × 28

DSP CORE

64 × 28

SERIAL

DATA/TDM

INPUT

SERIAL DATA/

TDM OUTPUT

GROUP

DATA FORMAT:

5.23 (SINGLE PRECISION)

10.46 (DOUBLE PRECISION)

GROUP

PLL MODE

MCLK

SELECT

PLL

MASTER

CLOCK

CONTROL

INPUT

REGISITER

TRAP REG.

PROGRAM

PARAMETER

RAM

COEFFICIENT

ROM

RAM

SERIAL

CONTROL

PORT

SPI I/O

GROUP

1536 × 40

1024 × 28

512 × 28

SAFELOAD

RESETB

REGULATOR

GROUP

MEMORY CONTROLLERS

VOLTAGE REGULATOR

Figure 6. Block Diagram

Rev. PrE | Page ±0 of 32

1...7 8 91011 12 13...32

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与AD1941相关器件

型号	品牌	描述	获取价格	数据表
AD1941_15	ADI	SigmaDSP Multichannel 28-Bit Audio Processor	获取价格
AD1941YSTZ	ADI	SigmaDSP-TM Multichannel 28-Bit Audio Processor	获取价格
AD1941YSTZRL	ADI	SigmaDSP-TM Multichannel 28-Bit Audio Processor	获取价格
AD1953	ADI	SigmaDSP⑩ 3-Channel, 26-Bit Signal Processing	获取价格
AD1953YST	ADI	SigmaDSP⑩ 3-Channel, 26-Bit Signal Processing	获取价格
AD1953YSTRL	ADI	SigmaDSP⑩ 3-Channel, 26-Bit Signal Processing	获取价格

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