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參數(shù)資料
| 型號： | MAX9702 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier |
| 中文描述： | 1.8W、無需濾波、立體聲D類音頻功率放大器和DirectDrive立體聲耳機(jī)放大器 |
| 文件頁數(shù)： | 1/32頁 |
| 文件大小： | 1411K |
| 代理商： | MAX9702 |
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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 1.8W per
channel into an 8
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 patented
DirectDrive
TM
architecture that produces a ground-ref-
erenced 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-distor-
tion amplification of the audio signal.
An I
2
C interface sets the speaker and headphone gain,
mono, stereo, and mute functions.
The MAX9702 is available in 28-pin thin QFN-EP (5mm
x 5mm x 0.8mm) and 28-pin TSSOP packages. The
MAX9702 is specified over the extended -40°C to
+85°C temperature range.
Applications
Cellular Phones
Notebook PCs
PDAs
Handheld Gaming Consoles
Features
Patented Spread-Spectrum Modulation Reduces
EMI Emissions
Programmable Mono, Stereo, Mute, and Mix
Functions
1.1W Stereo Output (8
, V
DD
= 5V)
48mW Headphone Output (32
, V
DD
= 3.3V)
95% Efficiency (R
L
= 8
, P
O
= 1.1W)
High 73dB PSRR (f = 217Hz)
I
2
C Programmable Gain Up to +21dB
Integrated Click-and-Pop Suppression
Low-Power Shutdown Mode (0.1μA)
Short-Circuit and Thermal-Overload Protection
±8kV (HBM) ESD-Protected Headphone Driver
Outputs
Ordering Information
M
1.8W, Filterless, Stereo, Class D Audio Power
Amplifier and DirectDrive Stereo Headphone 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
PART
PIN–PACKAGE
I
2
C SLAVE
ADDRESS
PKG
CODE
MAX9702EUI+
MAX9702BEUI+ 28 TSSOP
MAX9702ETI+
MAX9702BETI+
Note:
All devices specified for -40°C to +85°C operating tem-
perature range.
*
EP = Exposed paddle.
+
Denotes lead-free package.
Simplified Block Diagram
28 TSSOP
1001100
1001110
1001100
1001110
U28-1
U28-1
T2855-6
T2855-6
28 TQFN-EP*
28 TQFN-EP*
19-3608; Rev 0; 6/05
Pin Configurations appear at end of data sheet.
*
Purchase of I
2
C components from Maxim Integrated Products,
Inc. or one of its sublicensed Associated Companies, conveys
a license under the Philips I
2
C Patent Rights to use these com-
ponents in an I
2
C system, provided that the system conforms
to the I
2
C Standard Specification as defined by Philips.
MAX9702
RIGHT MODULATOR
AND H-BRIDGE
INR
INM
INL
SHDN
SDA
SCL
I
2
C
I
GAIN
CONTROL
SYNC_OUT
SYNC
OSCILLATOR
∑
∑
LEFT MODULATOR
AND H-BRIDGE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9702B | 1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier |
| MAX9703 | Hex 2-Input OR Drivers 20-CDIP -55 to 125 |
| MAX9703-MAX9704 | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
| MAX9703ETJ | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
| MAX9704ETJ | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9702BETI+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TQFN - Rail/Tube |
| MAX9702BETI+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 28TQFN - Tape and Reel |
| MAX9702BEUI+ | 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 |
| MAX9702BEUI+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 |
| MAX9702ETI+ | 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp 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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