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參數(shù)資料
| 型號： | MAX9718 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost. Mono/Stereo. 1.4W Differential Audio Power Amplifiers |
| 中文描述： | 低成本、單聲道/立體聲、1.4W差分音頻功率放大器 |
| 文件頁數(shù)： | 9/18頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MAX9718 |
M
500mW, Low EMI, Filterless,
Class D Audio Amplifier
_______________________________________________________________________________________
9
spread over a bandwidth that increases with frequency.
Above a few MHz, the wideband spectrum looks like
white noise for EMI purposes (Figure 3).
External Clock Mode
The SYNC input allows the MAX9712 to be synchro-
nized to a system clock (allowing a fully synchronous
system), or allocating the spectral components of the
switching harmonics to insensitive frequency bands.
Applying an external TTL clock of 800kHz to 2MHz to
SYNC synchronizes the switching frequency of the
MAX9712. The period of the SYNC clock can be ran-
domized, enabling the MAX9712 to be synchronized to
another MAX9712 operating in SSM mode.
Filterless Modulation/Common-Mode Idle
The MAX9712 uses Maxim’s unique, patented modula-
tion scheme that eliminates the LC filter required by
traditional class D amplifiers, improving efficiency,
reducing component count, conserving board space
and system cost. Conventional class D amplifiers out-
put a 50% duty cycle square wave when no signal is
present. With no filter, the square wave appears across
Figure 1. MAX9712 Outputs with an Input Signal Applied
OUT+
OUT-
V
IN-
V
IN+
V
OUT+
- V
OUT-
t
ON(MIN)
t
SW
SYNC INPUT
GND
FLOAT
V
DD
Clocked
MODE
FFM with f
S
= 1100kHz
FFM with f
S
= 1450kHz
SSM with f
S
= 1220kHz
±
120kHz
FFM with f
S
= external clock frequency
Table 1. Operating Modes
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PDF描述 |
|---|---|
| MAX9719 | Low-Cost. Mono/Stereo. 1.4W Differential Audio Power Amplifiers |
| MAX9722A | 5V. Differential-Input. DirectDrive. 130mW Stereo Headphone Amplifiers with Shutdown |
| MAX9722B | 5V. Differential-Input. DirectDrive. 130mW Stereo Headphone Amplifiers with Shutdown |
| MAX9750 | 2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9718AEBL | 制造商:Maxim Integrated Products 功能描述:LOW-COST MONO/STEREO 1.4W DIFFERE - Rail/Tube |
| MAX9718AEBL+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.4W CLS-AB 9UCSP - Rail/Tube |
| MAX9718AEBL+T | 制造商:Maxim from Components Direct 功能描述:THE MAXIM MAX9718AEBL+T IS A CLASS AB PORTABLE SPEAKER AMPLI - Tape and Reel 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.4W CLS-AB 9UCSP - Tape and Reel 制造商:Maxim 功能描述:Maxim MAX9718AEBL+T, Audio Power Amplifier Class AB 1.4W Differential 2.7V-5.5V 9-bump USCP |
| MAX9718AEBL+TG45 | 功能描述:音頻放大器 Mono/Stereo 1.4W BTL Audio Power 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9718AEBL-T | 制造商:Maxim Integrated Products 功能描述:LOW-COST, MONO/STEREO, 1.4W DIFFERENTIAL AUDI - Tape and Reel |
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