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參數(shù)資料
| 型號： | MAX9759 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 3.2W, High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier |
| 中文描述： | 3.2W、高效、低EMI、無需濾波、D類音頻放大器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 957K |
| 代理商： | MAX9759 |
General Description
The MAX9759 mono class D, audio power amplifier
provides class AB amplifier audio performance with the
benefits of class D efficiency, eliminating the need for a
heatsink and extending battery life. The MAX9759 deliv-
ers up to 3.2W of continuous power into a 4
load while
offering greater than 90% efficiency. Maxim’s next-gen-
eration, low-EMI modulation scheme allows the amplifi-
er to operate without an external LC filter while still
meeting FCC EMI-radiated emission levels.
The MAX9759 offers two modulation schemes: a fixed-
frequency modulation (FFM) mode and a spread-spec-
trum modulation (SSM) mode. The SSM mode flattens
the wideband spectral components, reducing EMI-radi-
ated emissions due to the modulation frequency.
Furthermore, the MAX9759 oscillator can be synchro-
nized to an external clock through the SYNC input,
allowing the switching frequency to range from
1000kHz to 1600kHz. The SYNC input and SYNC_OUT
output of the MAX9759 allow multiple Maxim class D
amplifiers to be cascaded and frequency locked, mini-
mizing interference due to clock intermodulation. The
MAX9759 utilizes fully differential input amplifiers, a full-
bridged output, comprehensive click-and-pop suppres-
sion, and features four selectable gain settings (6dB,
12dB, 18dB, 24dB).
The MAX9759 features high 81dB PSRR, low 0.02%
THD+N, and SNR in excess of 90dB. Short-circuit and
thermal-overload protection prevents damage to the
device during a fault condition. The MAX9759 operates
from a single 5V supply, consumes 8.4mA of supply
current, and is available in a 16-pin thin QFN package
(4mm x 4mm x 0.8mm) and a 16-pin TSSOP package.
The MAX9759 is fully specified over the extended -40°C
to +85°C temperature range.
Applications
Cell Phones/PDAs
Notebook PCs
Portable DVD Players
Flat-Panel PC Monitors
LCD TVs
LCD Projectors
Features
3.2W into 4
Load (THD+N = 10%)
Filterless Amplifier Passes FCC Radiated
Emissions Standards with 7.6cm of Cable
92% Efficiency
High PSRR (81dB at 1kHz)
Low 0.02% THD+N
External Clock Synchronization for Multiple,
Cascaded Maxim Class D Amplifiers
3.0V to 5.5V Single-Supply Operation
Pin-Selectable Gain (6dB, 12dB, 18dB, 24dB)
Integrated Click-and-Pop Suppression
Low Quiescent Current (8.4mA)
Low-Power Shutdown Mode (10μA)
Mute Function
Short-Circuit and Thermal-Overload Protection
Available in Thermally Efficient Packages
16-Pin TQFN (4mm x 4mm x 0.8mm)
16-Pin TSSOP
Ordering Information
M
3.2W, High-Efficiency, Low-EMI, Filterless,
Class D Audio Amplifier
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX9759
DIFFERENTIAL
AUDIO INPUT
SYNC
INPUT
SYNC
OUTPUT
V
DD
OSCILLATOR
MODULATOR
AND H-BRIDGE
MONO SPEAKER
OUTPUT
GAIN
CONTROL
MUTE
CONTROL
SHDN
CONTROL
G1
G2
SHDN
MUTE
Simplified Block Diagram
19-3691; Rev 0; 5/05
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
16 TQFN-EP*
16 TSSOP
MAX9759ETE+
MAX9759EUE+
+
Denotes lead-free package.
*
EP = Exposed paddle.
Pin Configurations appear at end of data sheet.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9759ETE+ | 功能描述:音頻放大器 3.2W Low-EMI Class D 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9759ETE+T | 功能描述:音頻放大器 3.2W Low-EMI Class D 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9759EUE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9759EUE+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 4.3W CLS-D 16TSSOP - Tape and Reel |
| MAX9759EVKIT | 功能描述:音頻放大器 Evaluation Kit for the MAX9759 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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