HT6871CR [HEROIC]
HT6871 Brief Introduction;HT6871
HT6871产品简介
HT6871 Brief Introduction
中文版 (2-3页)
English Version (Page 4 - 6)
版权所有©2011, 嘉兴禾润电子科技有限公司
-1-
03/2011 – V1.0
HT6871
3.4W低EMI防削顶单声道免滤波D类音频功率放大器
特点
概述
HT6871是一款低EMI的,防削顶失真的,单声
・防削顶失真功能(Anti-Clipping Function, ACF)
・优异的全带宽EMI抑制性能
・免滤波器数字调制,直接驱动扬声器
道免滤波D类音频功率放大器。在5V电源,10%
THD+N,4ꢀ负载条件下,输出3.4W功率(WLCSP-9
封装),在各类音频终端应用中维持高效率并提供AB
类放大器的性能。
・输出功率(WLCSP-9)
3.4 W (VDD=5.0V, RL=4Ω, THD+N=10%)
・输出功率(SOP-8)
2.5 W (VDD=5.0V, RL=4Ω, THD+N=10%)
・高效率
91% (VDD=5.0V, RL=8Ω, PO=1W, WLCSP-9)
88% (VDD=3.6V, RL=8Ω, PO=0.6W, WLCSP-9)
89% (VDD=5.0V, RL=8Ω, PO=1W, SOP-8)
・卓越的“咔嗒-噼噗”(Click-Pop)噪声抑制性能
・高信噪比SNR:95dB (VDD=5V, Av=18dB)
HT6871的最大特点是防削顶失真(ACF)输出
控制功能,可检测并抑制由于输入音乐、语音信号幅
度过大所引起的输出信号削顶失真(破音),也能自
适应地防止在电池应用中由电源电压下降所造成的
输出削顶,显著提高音质,创造非常舒适的听音享受,
并保护扬声器免受过载损坏。针对不同应用需求,防
削顶具有ACF-1和ACF-2两种模式,分别对应约3%
和10%最大THD+N,同时芯片具有ACF-Off 模式。
・低关断电流:0.01µA
・过流保护功能
HT6871具有独有的电磁辐射(EMI)抑制技术
和优异的全带宽低辐射性能,辐射水平在不加任何辅
助设计时仍远在FCC Part15 Class B 标准之下,不
仅避免了干扰其他敏感电路还降低了系统设计难度。
・过热保护功能
・欠压异常保护功能
・无铅封装,SOP-8和WLCSP-9
HT6871内部集成免滤波器数字调制技术,能够
直接驱动扬声器,并最大程度减小脉冲输出信号的失
真和噪音。输出无需滤波网络,极少的外部元器件节
省了系统空间和成本,是便携式应用的理想选择。
应用
・便携式音箱
・USB音箱
・iphone/ipod/MP3 docking ・数码相框
此外,HT6871内置的关断功能使待机电流最小
化,还集成了输出端过流保护、片内过温保护和电源
欠压异常保护等功能。
・PMP/MP4/MP5播放器
・便携式游戏机
・导航仪GPS
・手机
・掌上电脑PDAs
典型应用图
CS
1µF
6
VDD
RIN
CIN
IN+
IN-
OUT+
OUT-
4
3
5
8
EMI抑制
+
输出驱动
数字
PWM
调制器
33nF
前置
放大
单端
输入
12kٛ
RIN
CIN
33nF
12kٛ
2
BYPASS
CB
1µF
载波
OCP
ACF
数字控制
发生器
S1
OTP
1 CTRL
关断
控制
HT6871
UVLO
RPD
GND
7
版权所有©2011, 嘉兴禾润电子科技有限公司
-2-
03/2011 – V1.0
HT6871
引脚信息
1
2
3
4
8
7
6
5
OUT-
GND
VDD
CTRL
IN+
VDD
OUT+
A
AGND
IN-
CTRL
OUT-
C
1
2
3
BYPASS
IN-
BYPASS
PGND
OUT+
IN+
B
8引脚SOP 顶视图
9焊球WLCSP 底视图
订购信息
H
T
6
8
7
1
X
X
包装和供货形式
封装形式
产品型号
封装形式
顶面标记
工作温度范围
包装和供货形式
卷带装
HT6871
-40℃~85℃
HT6871MR
SOP-8
UVWXYZ *1
2500片/盘
(扩展工业级)
管装
100片/管
HT6871
-40℃~85℃
HT6871MT
HT6871CR
SOP-8
UVWXYZ *1
(扩展工业级)
卷带装
3000片/盘
6871
-40℃~85℃
WLCSP-9
WXYZ *1
(扩展工业级)
注1:WXYZ/UVWXYZ为内部生产跟踪随机编码。
嘉兴禾润电子科技有限公司
Jiaxing Heroic Technology Co., Ltd.
地址: 浙江省嘉兴市亚太路 JRC 大厦 A 座三层
电话: 0573-82583866 82585565
传真: 0573-82585078
E-mail: sales@heroic.com.cn
网址: www.heroic.com.cn
版权所有©2011, 嘉兴禾润电子科技有限公司
-3-
03/2011 – V1.0
HT6871
3.4W Low-EMI Anti-Clipping Filter-Less
Mono Class D Audio Power Amplifier
FEATURES
GENERAL DESCRIPTION
HT6871 is a low-EMI, Anti-Clipping, filter-less,
monaural Class D power amplifier with an output
power of 3.4W (WLCSP-9 Packages). It has a high
efficiency for various applications with Class AB
amplifier performance.
・Anti-Clipping Function, ACF
・Excellent EMI Suppression Performance
・Filter-less Modulation, Eliminating Output Filter
・Output Power(WLCSP-9)
3.4 W (VDD=5.0V, RL=4ꢀ, THD+N=10%)
・Output Power(SOP-8)
HT6871 features Anti-Clipping Function (ACF)
which detects and suppresses output signal
clippings due to the over level inputs. ACF function
also can adapt the output clippings caused by
power supply voltage down in battery applications.
It improves acoustical quality considerably, gives
great listening enjoyment, and prevents speaker
from overload damaging. According to different
application requirements, two modes of ACF-1 and
ACF-2 could be selected to achieve a maximal
THD+N of 3% and 10% respectively.
2.5 W (VDD=5.0V, RL=4ꢀ, THD+N=10%)
・High Efficiency
91% (VDD=5.0V, RL=8ꢀ, PO=1W, WLCSP-9)
88% (VDD=3.6V, RL=8ꢀ, PO=0.6W, WLCSP-9)
89% (VDD=5.0V, RL=8ꢀ, PO=1W, SOP-8)
・Excellent Click-Pop Noise Reduction Function
・High SNR:95dB (VDD=5V, Av=18dB)
・Low Shutdown Current:0.01µA
・Over-Current Protection Function
・Thermal Protection Function
・Low Voltage Malfunction Prevention Function
・Pb-Free Packages, SOP-8 or WLCSP-9
HT6871 has excellent EMI radiation suppression
characteristics. The radiation level is well below
FCC Part15 Class B standards without any additive
design. It keeps from interference with other EMI
sensitive circuits, simplifies system design and
lowers system cost.
APPLICATIONS
・Portable Speakers
・iphone/ipod, MP3/4 docking ・PSP
・USB Speakers
・PMP/MP4/MP5
・Digital Photo Frame
・PDAs
・GPS
・Mobile Phones
HT6871 has a filter-less modulation circuit which
directly drives speakers, realizes highest standard
low distortion and low noise characteristics among
digital amplifier ICs for mobile use. Thanks to
filter-less, circuit design with fewer external parts
can be made in portable applications.
HT6871 has shutdown mode, over-current
protection, over-temperature protection and low
supply voltage malfunction preventing function.
Copyright©2011, Jiaxing Heroic Technology Co., Ltd
-4-
Mar. 2011 V1.0
HT6871
TYPICAL APPLICATION
TERMINAL CONFIGURATION
Copyright©2011, Jiaxing Heroic Technology Co., Ltd
-5-
Mar. 2011 V1.0
HT6871
ORDERING IMFORMATION
H
T
6
8
7
1
X
X
Shipping Package
Package Type
Operating
Temperature Range
MOQ/Shipping
Package
Part Number
HT6871MR
HT6871MT
HT6871CR
Package Type
SOP-8
Marking
HT6871
-40℃~85℃
(Extended Temp.)
-40℃~85℃
Paper bags
2500PCS/Plate
UVWXYZ *1
HT6871
Tubes
100PCS/Tube
SOP-8
UVWXYZ *1
(Extended Temp.)
-40℃~85℃
6871
Paper bags
3000PCS/Plate
WLCSP-9
WXYZ *1
(Extended Temp.)
Note *1:WXYZ/UVWXYZ is the production track code.
Jiaxing Heroic Technology Corporation, Limited
Add:
Tel:
Fax:
A 3rd floor, JRC Building, Yatai Road, Jiaxing, Zhejiang Province
0573-82583866 82585565
0573-82585078
E-mail: sales@heroic.com.cn
Web: www.heroic.com.cn
Copyright©2011, Jiaxing Heroic Technology Co., Ltd
-6-
Mar. 2011 V1.0
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