參數(shù)資料
型號： MAX9722AEUE+T
廠商： Maxim Integrated Products
文件頁數(shù)： 1/21頁
文件大小： 0K
描述： IC AMP AUDIO .13W STER 16TSSOP
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,500
系列： DirectDrive®
類型： AB 類
輸出類型： 耳機，2-通道（立體聲）
在某負載時最大輸出功率 x 通道數(shù)量： 130mW x 2 @ 32 歐姆
電源電壓： 2.4 V ~ 5.5 V
特點： 消除爆音，差分輸入，短路和熱保護，關(guān)閉
安裝類型： 表面貼裝
供應商設(shè)備封裝： 16-TSSOP
封裝/外殼： 16-TSSOP（0.173"，4.40mm 寬）
包裝： 帶卷 (TR)
General Description
The MAX9722A/MAX9722B stereo headphone amplifiers
are designed for portable equipment where board space
is at a premium. The MAX9722A/MAX9722B use a
unique DirectDrive architecture to produce a ground-ref-
erenced output from a single supply, eliminating the
need for large DC-blocking capacitors, which saves
cost, board space, and component height. Additionally,
the
gain
of
the
amplifier
is
set
internally
(-2V/V, MAX9722B) or adjusted externally (MAX9722A).
The MAX9722A/MAX9722B deliver up to 70mW per
channel into a 16
Ω load or 130mW into a 32Ω load and
have low 0.009% THD+N. An 80dB at 217Hz power-sup-
ply rejection ratio (PSRR) allows these devices to operate
from noisy digital supplies without an additional linear
regulator. The MAX9722A/MAX9722B include ±8kV ESD
protection on the headphone outputs. Comprehensive
anticlick-and-pop circuitry suppresses audible clicks
and pops on startup and shutdown. A low-power shut-
down mode reduces the supply current to 0.1A.
The MAX9722A/MAX9722B operate from a single 2.4V
to 5.5V supply, consume only 5.5mA 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
16-pin thin QFN (3mm 3mm 0.8mm) and 16-pin
TSSOP packages.
Applications
Features
2.4V to 5.5V Single-Supply Operation
High PSRR (80dB at 217Hz) Eliminates LDO
No Bulky DC-Blocking Capacitors Required
Ground-Referenced Outputs Eliminate DC Bias
Voltage on Headphone Ground Pin
No Degradation of Low-Frequency Response Due
to Output Capacitors
Differential Inputs for Enhanced Noise
Cancellation
Adjustable Gain (MAX9722A) or Fixed -2V/V Gain
(MAX9722B)
130mW per Channel into 32Ω
Low 0.009% THD+N
Integrated Click-and-Pop Suppression
Low Quiescent Current (5.5mA)
Short-Circuit and Thermal-Overload Protection
±8kV ESD-Protected Amplifier Outputs (Human
Body Model)
Available in a Space-Saving 16-Pin Thin QFN
(3mm 3mm 0.8mm) Package
MAX9722A/MAX9722B
5V, Differential Input, DirectDrive, 130mW
Stereo Headphone Amplifiers with Shutdown
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
LEFT
AUDIO
INPUT
DirectDrive OUTPUTS
ELIMINATE DC-BLOCKING
CAPACITORS.
FIXED GAIN ELIMINATES
EXTERNAL RESISTOR
NETWORK.
RIGHT
AUDIO
INPUT
SHDN
MAX9722B
Simplified Diagram
19-3049; Rev 2; 10/07
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.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
*EP = Exposed paddle.
Pin Configurations and Typical Application Circuit appear at
end of data sheet.
PART
PIN-PACKAGE
TOP
MARK
PKG
CODE
MAX9722AETE
16 Thin QFN-EP* (3mm
3mm 0.8mm)
AAX
T1633-5
MAX9722AEUE
16 TSSOP
—
U16-1
MAX9722BETE
16 Thin QFN-EP* (3mm
3mm 0.8mm)
AAY
T1633-5
MAX9722BEUE
16 TSSOP
—
U16-1
Notebook and
Desktop PCs
MP3 Players
Flat-Panel Monitors
Cellular Phones
Smart Phones
PDAs
Portable Audio
Equipment
EVALUATION
KIT
AVAILABLE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9722AEVKIT 功能描述:音頻 IC 開發(fā)工具 MAX9722A/B Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
MAX9722BETE 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9722BETE+ 功能描述:音頻放大器 DirectDrive 130mW Headphone Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9722BETE+G104 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9722BETE+T 功能描述:音頻放大器 DirectDrive 130mW Headphone Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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