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參數資料
| 型號： | MAX9702ETI+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/31頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 1.8W D 28TQFN |
| 標準包裝： | 60 |
| 系列： | DirectDrive® |
| 類型： | D 類 |
| 輸出類型： | 2-通道（立體聲）帶立體聲耳機 |
| 在某負載時最大輸出功率 x 通道數量： | 1.8W x 2 @ 4 歐姆; 45mW x 2 @ 32 歐姆 |
| 電源電壓： | 2.5 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，I²C，靜音，短路和熱保護，關機 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 28-TQFN-EP（5x5） |
| 封裝/外殼： | 28-WFQFN 裸露焊盤 |
| 包裝： | 管件 |
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General Description
The MAX9702 combines a highly efficient Class D
speaker amplifier with a high-linearity Class AB head-
phone amplifier. This ensures maximum battery life in
speaker mode and maximum performance in head-
phone mode. The MAX9702 delivers up to 1.1W per
channel into an 8Ω load and 1.8W into a 4Ω load from a
5V power supply. Maxim’s 2nd-generation, spread-
spectrum modulation scheme renders the traditional
Class D output filter unnecessary.
The MAX9702 speaker amplifier offers two modulation
schemes: a fixed-frequency (FFM) mode and a spread-
spectrum (SSM) mode that reduces EMI-radiated emis-
sions. The MAX9702 speaker amplifier features a fully
differential architecture, full-bridged (BTL) output, and
comprehensive click-and-pop suppression. The
MAX9702 speaker amplifier features high 75dB PSRR,
low 0.07% THD+N, and SNR in excess of 97dB. Short-
circuit and thermal-overload protection prevent the
device from being damaged during a fault condition.
The headphone amplifier uses Maxim’s DirectDriveTM
architecture that produces a ground-referenced output
from a single supply, eliminating the need for large DC-
blocking capacitors, saving cost, board space, and
component height. A high 80dB PSRR and low 0.02%
THD+N ensures clean, low-distortion amplification of
the audio signal.
An I2C interface sets the speaker and headphone gain,
mono, stereo, and mute functions.
The MAX9702 is available in a 28-pin thin QFN-EP (5mm
x 5mm x 0.8mm) package. The MAX9702 is specified
over the extended -40°C to +85°C temperature range.
Applications
Cellular Phones
Notebook PCs
PDAs
Handheld Gaming Consoles
Features
Spread-Spectrum Modulation Reduces EMI
Emissions
Programmable Mono, Stereo, Mute, and Mix
Functions
1.1W Stereo Output (8Ω, VDD = 5V)
48mW Headphone Output (32Ω, VDD = 3.3V)
1.8W Stereo Output (4Ω, VDD = 5V)
94% Efficiency (RL = 8Ω, PO = 1.1W)
High 73dB PSRR (f = 217Hz)
I2C Programmable Gain Up to +21dB
Integrated Click-and-Pop Suppression
Low-Power Shutdown Mode (0.1A)
Short-Circuit and Thermal-Overload Protection
±8kV (HBM) ESD-Protected Headphone Driver
Outputs
MAX9702
1.8W, Filterless, Stereo, Class D Audio Power
Amplifier and DirectDrive Stereo Headphone Amplifier
________________________________________________________________ Maxim Integrated Products
1
PART
PIN–PACKAGE
I
2C SLAVE
ADDRESS
PKG
CODE
MAX9702ETI+
28 TQFN-EP*
1001100
T2855-6
MAX9702BETI+ 28 TQFN-EP*
1001110
T2855-6
Ordering Information
19-3608; Rev 1; 10/05
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.
Note: All devices specified for -40°C to +85°C operating tem-
perature range.
*EP = Exposed paddle.
+ Denotes lead-free package.
Pin Configurations appear at end of data sheet.
EVALUATION
KIT
AVAILABLE
Simplified Block Diagram
MAX9702
RIGHT MODULATOR
AND H-BRIDGE
INR
INM
INL
SHDN
SCL
SDA
I2
C
CONTROL
INPUT
MUX
GAIN
CONTROL
SYNC_OUT
SYNC
OSCILLATOR
∑
LEFT MODULATOR
AND H-BRIDGE
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX9702ETI+ | 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp 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 |
| MAX9702ETI+T | 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp 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 |
| MAX9702EUI+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Rail/Tube |
| MAX9702EUI+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Tape and Reel |
| MAX9702EVCMODU | 功能描述:放大器 IC 開發(fā)工具 MAX9702/2B Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
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