參數(shù)資料
型號： MAX9724BETC+
廠商： Maxim Integrated Products
文件頁數(shù)： 1/19頁
文件大?。?/td> 0K
描述： IC AMP AUDIO .045W STER 12TQFN
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 100
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： 63mW x 2 @ 32 歐姆
電源電壓： 2.7 V ~ 5.5 V
特點： 消除爆音，短路保護和熱保護，關閉
安裝類型： 表面貼裝
供應商設備封裝： 12-TQFN EP（3x3）
封裝/外殼： 12-WQFN 裸露焊盤
包裝： 管件
配用： MAX9724AEVKIT+-ND - EVALUATION KIT FOR MAX9724A/B
MAX9724DEVKIT+-ND - KIT EVAL FOR MAX9724D
General Description
The MAX9724A/MAX9724B stereo headphone ampli-
fiers are designed for portable equipment where board
space is at a premium. These devices use a unique
DirectDrive architecture to produce a ground-refer-
enced output from a single supply, eliminating the need
for large DC-blocking capacitors, saving cost, board
space, and component height. The MAX9724 sup-
presses RF radiation received by input and supply
traces acting as antennas and prevents the amplifier
from demodulating the coupled noise. The MAX9724A
offers an externally adjustable gain while the
MAX9724B has an internally preset gain of -1.5V/V. The
MAX9724A/MAX9724B deliver up to 60mW per channel
into a 32Ω load and have low 0.02% THD+N. An 80dB
at 1kHz power-supply rejection ratio (PSRR) allows
these devices to operate from noisy digital supplies
without an additional linear regulator. Comprehensive
click-and-pop circuitry suppresses audible clicks and
pops on startup and shutdown.
The MAX9724A/MAX9724B operate from a single 2.7V
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-
bump UCSP (1.5mm x 2mm) and 12-pin thin QFN
(3mm x 3mm x 0.8mm) packages.
Applications
Features
Improved RF Noise Rejection (Up to 67dB Over
Typical Amplifiers)
No Bulky DC-Blocking Capacitors Required
Low-Power Shutdown Mode, < 0.1μA
Adjustable Gain (MAX9724A) or Fixed -1.5V/V
Gain (MAX9724B)
Low 0.02% THD+N
High PSRR (80dB at 1kHz) Eliminates LDO
Integrated Click-and-Pop Suppression
2.7V to 5.5V Single-Supply Operation
Low Quiescent Current (3.5mA)
Available in Space-Saving Packages
12-Bump UCSP (1.5mm x 2mm)
12-Pin Thin QFN (3mm x 3mm x 0.8mm)
MAX9724A/MAX9724B
60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3597; Rev 6; 3/09
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
MAX9724AEBC+TG45
Adj.
12 UCSP
+ADH
MAX9724AETC+
Adj.
12 TQFN-EP*
+AAT
MAX9724BEBC+TG45
-1.5
12 UCSP
+ADI
MAX9724BETC+
-1.5
12 TQFN-EP*
+AAU
Note: All devices specified over the -40°C to +85°C operating
range.
+
Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*
EP = Exposed paddle.
Cellular Phones
MP3 Players
Notebook PCs
Handheld Gaming Consoles
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
SHDN
MAX9724A
LEFT
AUDIO
INPUT
RIGHT
AUDIO
INPUT
MAX9724B
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.
DVD Players
Smart Phones
PDAs
UCSP is a trademark of Maxim Integrated Products, Inc.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
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相關代理商/技術參數(shù)
參數(shù)描述
MAX9724BETC+ 功能描述:音頻放大器 60mW DirectDrive Headphone Amplifier RoHS:否 制造商:STMicroelectronics 產品: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
MAX9724BETC+G126 功能描述:音頻放大器 Low RF Susceptibility DirectDrive Stereo Headphone Amplifier with 1.8V Compatible Shutdown RoHS:否 制造商:STMicroelectronics 產品: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
MAX9724BETC+T 功能描述:音頻放大器 60mW DirectDrive Headphone Amplifier RoHS:否 制造商:STMicroelectronics 產品: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
MAX9724BETC+TG126 功能描述:音頻放大器 60mW DirectDrive Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown RoHS:否 制造商:STMicroelectronics 產品: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
MAX9724BETC-T 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
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