参数资料
型号: MAX9728BEUD+T
厂商: Maxim Integrated Products
文件页数: 1/19页
文件大小: 0K
描述: IC AMP AUDIO .06W STER 14TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: DirectDrive®
类型: AB 类
输出类型: 耳机,2-通道(立体声)
在某负载时最大输出功率 x 通道数量: 60mW x 2 @ 32 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,短路保护和热保护,关闭
安装类型: 表面贴装
供应商设备封装: 14-TSSOP
封装/外壳: 14-TSSOP(0.173",4.40mm 宽)
包装: 带卷 (TR)
General Description
The MAX9728A/MAX9728B stereo headphone ampli-
fiers are designed for display and notebook applica-
tions or portable equipment where board space is at a
premium. These devices use a unique DirectDrive
architecture to produce a ground-referenced output
from a single supply, eliminating the need for large DC-
blocking capacitors, saving cost, board space, and
component height. The MAX9728A offers an externally
adjustable gain, while the MAX9728B has an internally
preset gain of -1.5V/V. The MAX9728A/MAX9728B
deliver up to 60mW per channel into a 32
Ω load and
have low 0.02% THD+N. An 80dB at 1kHz power-sup-
ply rejection ratio (PSRR) allows these devices to oper-
ate from noisy digital supplies without an additional
linear regulator. Comprehensive click-and-pop circuitry
suppresses audible clicks and pops on startup and
shutdown.
The MAX9728A/MAX9728B operate from a single 4.5V
to 5.5V supply, consume only 3.5mA of supply current,
feature short-circuit and thermal-overload protection,
and are specified over the extended -40°C to +85°C
temperature range. The devices are available in tiny 12-
pin Thin QFN (3mm x 3mm x 0.8mm) and 14-pin
TSSOP packages (5mm x 4.4mm x 1.1mm).
Features
No Bulky DC-Blocking Capacitors Required
Low-Power Shutdown Mode, < 0.1A
Adjustable Gain (MAX9728A) or Fixed -1.5V/V
Gain (MAX9728B)
Low 0.02% THD+N
High PSRR (80dB at 1kHz) Eliminates LDO
Integrated Click-and-Pop Suppression
4.5V to 5.5V Single-Supply Operation
Low Quiescent Current (3.5mA)
Available in Space-Saving Packages
12-Pin Thin QFN (3mm x 3mm x 0.8mm)
14-Pin TSSOP (5mm x 4.4mm x 1.1mm)
MAX9728A/MAX9728B
60mW, DirectDrive, Stereo
Headphone Amplifiers with Shutdown
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3963; Rev 1; 7/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
PART
GAIN (V/V) PIN-PACKAGE
TOP MARK
MAX9728AETC+
Adj.
12 TQFN-EP*
ABC
MAX9728AEUD+
Adj.
14 TSSOP
MAX9728BETC+
-1.5
12 TQFN-EP*
ABD
MAX9728BEUD+
-1.5
14 TSSOP
Note: All devices specified over the -40°C to +85°C operating
range.
+
Denotes lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
Notebook PCs
DVD Players
LCD/PDP Displays
CRT TVs
Multimedia Monitors
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
SHDN
MAX9728A
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
MAX9728B
SHDN
DirectDrive OUTPUTS
ELIMINATE DC-BLOCKING
CAPACITORS
DirectDrive OUTPUTS
ELIMINATE DC-BLOCKING
CAPACITORS
FIXED GAIN ELIMINATES
EXTERNAL RESISTOR
NETWORK
Block Diagrams
Pin Configurations appear at end of data sheet.
Applications
DirectDrive is a registered trademark of Maxim Integrated
Product, Inc.
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相关代理商/技术参数
参数描述
MAX9729ETI+ 功能描述:音频放大器 Stereo Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9729ETI+T 功能描述:音频放大器 Stereo Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9729EVCMAXQU+ 功能描述:音频放大器 Evaluation Kit/Evaluation System for the MAX9729 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX9729EVKIT+ 功能描述:音频放大器 Evaluation Kit/Evaluation System for the MAX9729 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
MAX972C/D 功能描述:校验器 IC RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压(最大值):6 mV 电源电流(最大值):1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel