參數(shù)資料
型號(hào)： MAX9709ETN+D
廠商： Maxim Integrated Products
文件頁數(shù)： 1/20頁
文件大小： 0K
描述： IC AMP AUDIO PWR 50W STER 56TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 37
類型： D 類
輸出類型： 1-通道（單聲道）或 2-通道（立體聲）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 50W x 1 @ 4 歐姆; 29W x 2 @ 8 歐姆
電源電壓： 10 V ~ 22 V
特點(diǎn)： 消除爆音，差分輸入，靜音，短路和熱保護(hù)，關(guān)機(jī)
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 56-TQFN-EP（8x8）
封裝/外殼： 56-WFQFN 裸露焊盤
包裝： 管件
產(chǎn)品目錄頁面： 1392 (CN2011-ZH PDF)
General Description
The MAX9709 stereo/mono, Class D audio power amplifi-
er delivers up to 2 x 25W into an 8Ω stereo mode and
1 x 50W into a 4Ω load in mono mode while offering up to
87% efficiency. The MAX9709 provides Class AB amplifi-
er performance with the benefits of Class D efficiency,
eliminating the need for a bulky heatsink and conserving
power. The MAX9709 operates from a single +10V to
+22V supply, driving the load in a BTL configuration.
The MAX9709 offers two modulation schemes: a fixed-fre-
quency modulation (FFM) mode, and a spread-spectrum
modulation (SSM) mode that reduces EMI-radiated emis-
sions. The MAX9709 can be synchronized to an external
clock from 600kHz to 1.2MHz. A synchronized output
allows multiple units to be cascaded in the system.
Features include fully differential inputs, comprehensive
click-and-pop suppression, and four selectable-gain set-
tings (22dB, 25dB, 29.5dB, and 36dB). A pin-program-
mable thermal flag provides seven different thermal
warning thresholds. Short-circuit and thermal-overload
protection prevent the device from being damaged
during a fault condition.
The MAX9709 is available in a 56-pin TQFN (8mm x
8mm x 0.8mm) package, and is specified over the
extended -40°C to +85°C temperature range.
Applications
LCD TVs
PDP TVs
Automotive
PC/HiFi Audio Solutions
Features
2 x 25W Output Power in Stereo Mode
(8Ω, THD = 10%)
1 x 50W Output Power in Mono Mode
(4Ω, THD = 10%)
High Efficiency: Up to 87%
Filterless Class D Amplifier
Unique Spread-Spectrum Mode
Programmable Gain (+22dB, +25dB, +29.5dB,
+36dB)
High PSRR (90dB at 1kHz)
Differential Inputs Suppress Common-Mode
Noise
Shutdown and Mute Control
Integrated Click-and-Pop Suppression
Low 0.1% THD+N
Current Limit and Thermal Protection
Programmable Thermal Flag
Clock Synchronization Input and Output
Available in Thermally Efficient, Space-Saving
Package: 56-Pin TQFN
MAX9709
25W/50W, Filterless, Spread-Spectrum,
Stereo/Mono, Class D Amplifier
________________________________________________________________
Maxim Integrated Products
1
CLASS D
MODULATOR
SYNCOUT
TEMP
OUTPUT
PROTECTION
GAIN
CONTROL
FS1, FS2
MAX9709
STEREO MODE
G1, G2
2
SYNC
RIGHT
CHANNEL
LEFT
CHANNEL
MONO
2
TH0, TH1,
TH2
3
PART
TEMP RANGE
PIN-PACKAGE
MAX9709ETN+
-40°C to +85°C
56 TQFN-EP**
Simplified Block Diagram
Ordering Information
19-3769; Rev 1; 5/08
+
Denotes a lead-free package.
**
EP = Exposed pad.
Pin Configurations appear at end of data sheet.
EVALUATION
KIT
AVAILABLE
CLASS D
MODULATOR
SYNCOUT
TEMP
OUTPUT
PROTECTION
GAIN
CONTROL
FS1, FS2
MAX9709
MONO MODE
G1, G2
2
SYNC
AUDIO
INPUT
VDIGITAL
MONO
2
TH0, TH1,
TH2
3
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.
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參數(shù)描述
MAX9709EVKIT 功能描述:音頻放大器 Evaluation Kit for the MAX9709 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
MAX970EEE 功能描述:校驗(yàn)器 IC Quad uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
MAX970EEE+ 功能描述:校驗(yàn)器 IC Quad uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
MAX970EEE+T 功能描述:校驗(yàn)器 IC Quad uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
MAX970EEE-T 功能描述:校驗(yàn)器 IC Quad uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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