Datasheet > CXD2724AQ-3

CXD2724AQ-3

更新时间： 2024-01-03 22:56:34

品牌	Logo	应用领域
索尼 - SONY		解码器
页数	文件大小	规格书
65页	495K
描述
Single-Chip Dolby Pro Logic Surround Decoder

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技术参数
数据手册

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CXD2724AQ-3 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	QFP, QFP80,.7X.9,32	针数：	80
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.84	商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PQFP-G80	JESD-609代码：	e6/e4
长度：	20 mm	功能数量：	1
端子数量：	80	最高工作温度：	70 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP	封装等效代码：	QFP80,.7X.9,32
封装形状：	RECTANGULAR	封装形式：	FLATPACK
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	3.1 mm
子类别：	Other Consumer ICs	最大压摆率：	36 mA
最大供电电压 (Vsup)：	5.25 V	最小供电电压 (Vsup)：	4.75 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	TIN BISMUTH/PALLADIUM
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	10
宽度：	14 mm	Base Number Matches：	1

CXD2724AQ-3 数据手册

CXD2724AQ-3

Single-Chip Dolby Pro Logic Surround Decoder

Description

The CXD2724AQ-3 is a CMOS LSI developed for

Dolby Pro Logic Surround. A SRAM for short delay

and AD/DA converters are built in, and all functions

necessary for Dolby Pro Logic Surround such as an

adaptive matrix, a passive decoder including BNR,

auto input balance, a noise sequencer and center

channel mode control are contained on a single

chip. Further, this LSI also supports Dolby 3 Stereo

and Virtual Dolby Surround.

80 pin QFP (Plastic)

Features

• Dolby Pro Logic Surround decoding with a single

chip

• 2-channel 1-bit AD converter, decimation filter and

prefilter operational amplifier

• 4-channel 1-bit DA converter, oversampling filter

and post filter

• Analog switch for DSP bypass

• Analog electronic attenuator (+1.5 to –29.5dB) for

center/surround channel trim

• 24K-bit SRAM for short delay

• No separation or other variance for digital

processing

Absolute Maximum Ratings (Ta = 25°C, V^SS= 0V)

• Supply voltage

• Input voltage

• Output voltage

VDD

VSS – 0.5 to +7.0

VSS – 0.5 to VDD + 0.5

VO VSS – 0.5 to VDD + 0.5

• Operating temperature

Topr

• Storage temperature

Tstg

–20 to +70

°C

–55 to +150

Recommended Operating Conditions

• Supply voltage

Analog system

Digital system

V^DD

4.75 to 5.25 (5.0 typ.)

4.50 to 5.25 (5.0 typ.)

• External parts reduced by incorporating analog

circuits

• Operating temperature

–20 to +70

°C

Functions

• Adaptive matrix

Input/Output Capacitance

• Input capacitance CIN

• Output capacitance COUT

• Input/output capacitance

CI/O

• Center channel mode control

(Normal/Phantom/Wide)

• Dolby 3 Stereo

• Auto input balance control (ON/OFF)

• Noise sequencer

9 (max.)

11 (max.)

Measurement conditions: VDD = VI = 0V, F = 1MHz

• Variable delay time (0 to 34.8ms)

• 7 kHz low-pass filter (12dB/Oct)

• Modified Dolby B-type NR

• Simple SFC function

Maximum Current Consumption

(Ta = 25°C, VDD = 5.25V)

• Digital/analog block total: 166.7mA

Dolby level

• Virtual Dolby Surround

• SFC mode

• During analog input: 200 to 300mVrms

• During digital input: –20dBFS

Analog characteristics

• DSP bypass mode (L, R-channel through)

Structure

Pro Logic ON: Dolby level = 300mVrms

Prefilter gain = –3.52dB

Silicon gate CMOS

• S/N: L, Rch = 80dB, C, Sch = 72dB

• THD + N: L, Rch = 0.015%, C, Sch = 0.03%

All values for typ.

Applications

Equipment having Dolby Pro Logic Surround

function such as AV amplifiers, receivers and

compact music systems

This device is available only to parties obtaining the license from Dolby Laboratories Licensing Corporation.

"Dolby", the double-D symbol and "Pro Logic" are trademarks of Dolby Laboratories Licensing Corporation.

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

– 1 –

E99418-PS

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