參數(shù)資料
型號(hào): MAX9750
廠商: Maxim Integrated Products, Inc.
英文描述: 2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers
中文描述: 2.6W立體聲音頻功率放大器和DirectDrive®耳機(jī)放大器
文件頁(yè)數(shù): 9/18頁(yè)
文件大小: 537K
代理商: MAX9750
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9750AETI+ 功能描述:音頻放大器 Integrated Circuits (ICs) 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
MAX9750AETI+T 功能描述:音頻放大器 Integrated Circuits (ICs) 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
MAX9750AEUI+ 功能描述:IC AMP AUDIO PWR 2.6W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:DirectDrive® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī),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:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C,麥克風(fēng),靜音,短路保護(hù),音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR)
MAX9750AEUI+T 功能描述:IC AMP AUDIO PWR 2.6W AB 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:DirectDrive® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī),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:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C,麥克風(fēng),靜音,短路保護(hù),音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR)
MAX9750AEVKIT 功能描述:放大器 IC 開發(fā)工具 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V