參數(shù)資料
型號(hào)： MAX9762ETI+T
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 7/31頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 3W MONO 28TQFN
標(biāo)準(zhǔn)包裝： 2,500
類型： AB 類
輸出類型： 1-通道（單聲道），帶立體聲耳機(jī)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 3W x 1 @ 3 歐姆; 200mW x 2 @ 16 歐姆
電源電壓： 4.5 V ~ 5.5 V
特點(diǎn)： 消除爆音，I²C，輸入多路復(fù)用器，靜音，關(guān)機(jī)，熱保護(hù)
安裝類型： 表面貼裝
供應(yīng)商設(shè)備封裝： 28-TQFN-EP（5x5）
封裝/外殼： 28-WFQFN 裸露焊盤
包裝： 帶卷 (TR)
MAX9760–MAX9763
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
______________________________________________________________________________________
15
The clickless power-down cycle only occurs when the
device is in headphone mode. The speaker mode is
inherently clickless, the differential architecture cancels
the DC shift across the speaker. The MAX9760–
MAX9763 BTL outputs are pulled to GND quickly and
simultaneously, resulting in no audible components. If
the MAX9760–MAX9763 are only used as speaker
amplifiers, then reservoir capacitors or secondary sup-
plies are not necessary.
When using a reservoir capacitor, a 220F capacitor
provides optimum charge storage for the shutdown
cycle for all conditions. If a smaller reservoir capacitor
is desired, decrease the size of CBIAS. A smaller CBIAS
causes the output DC level to decay at a faster rate,
increasing the audible content at the speaker, but
reducing the duration of the shutdown cycle.
Digital Interface
The MAX9760/MAX9762 feature an I2C/SMBus-compat-
ible 2-wire serial interface consisting of a serial data
line (SDA) and a serial clock line (SCL). SDA and SCL
facilitate bidirectional communication between the
MAX9760/MAX9762 and the master at clock rates up to
400kHz. Figure 3 shows the 2-wire interface timing dia-
gram. The MAX9760/MAX9762 are transmit/receive
slave-only devices, relying upon a master to generate a
clock signal. The master (typically a microcontroller) ini-
tiates data transfer on the bus and generates SCL to
permit that transfer.
A master device communicates to the MAX9760/
MAX9762 by transmitting the proper address followed
by a command and/or data words. Each transmit
sequence is framed by a START (S) or REPEATED
START (Sr) condition and a STOP (P) condition. Each
word transmitted over the bus is 8 bits long and is
always followed by an acknowledge clock pulse.
The MAX9760/MAX9762 SDA and SCL amplifiers are
open-drain outputs requiring a pullup resistor (500
or
greater) to generate a logic high voltage. Series resis-
tors in line with SDA and SCL are optional. These series
resistors protect the input stages of the devices from
high-voltage spikes on the bus lines, and minimize
crosstalk and undershoot of the bus signals.
Bit Transfer
One data bit is transferred during each SCL clock
cycle. The data on SDA must remain stable during the
high period of the SCL clock pulse. Changes in SDA
while SCL is high are control signals (see START and
STOP Conditions section). SDA and SCL idle high
when the I2C bus is not busy.
START and STOP Conditions
When the serial interface is inactive, SDA and SCL idle
high. A master device initiates communication by issu-
ing a START condition. A START condition is a high-to-
low transition on SDA with SCL high. A STOP condition
is a low-to-high transition on SDA while SCL is high
(Figure 4). A START condition from the master signals
the beginning of a transmission to the MAX9760/
SCL
SDA
START
CONDITION
STOP
CONDITION
REPEATED
START
CONDITION
START
CONDITION
tHD, STA
tSP
tBUF
tSU, STO
tLOW
tSU, DAT
tHD, DAT
tHIGH
tR
tF
Figure 3. 2-Wire Serial Interface Timing Diagram
SCL
SDA
SSr
P
Figure 4. START/STOP Conditions
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9762EUI 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9762EUI+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9763ETI 功能描述:音頻放大器 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
MAX9763ETI+ 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
MAX9763ETI+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
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