參數(shù)資料
型號(hào)： MAX9726BETP+
廠(chǎng)商： Maxim Integrated Products
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 0K
描述： IC AMP AUDIO .124W STER 20TQFN
標(biāo)準(zhǔn)包裝： 75
系列： DirectDrive®
類(lèi)型： AB 類(lèi)
輸出類(lèi)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： 124mW x 2 @ 16 歐姆
電源電壓： 2.7 V ~ 5.5 V
特點(diǎn)： 低音增強(qiáng)模式，消除爆音，I²C，靜音，短路和熱保護(hù)，關(guān)機(jī)，音量控制
安裝類(lèi)型： 表面貼裝
供應(yīng)商設(shè)備封裝： 20-TQFN-EP（4x4）
封裝/外殼： 20-WFQFN 裸露焊盤(pán)
包裝： 管件
Bit Transfer
One data bit is transferred during each SCL cycle. The
data on SDA must remain stable during the high period
of the SCL pulse since changes in SDA while SCL is
high are control signals (see the
START and STOP
Conditions section). SDA and SCL idle high when the
I2C bus is not busy.
START and STOP Conditions
SDA and SCL idle high when the bus is not in use. A
master device initiates communication by issuing 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
5). A START condition from the master signals the
beginning of a transmission to the MAX9726. The mas-
ter terminates transmission, and frees the bus, by issu-
ing a STOP condition. The bus remains active if a
REPEATED START condition is generated instead of a
STOP condition.
Early STOP Conditions
The MAX9726 recognizes a STOP condition at any point
during data transmission except if the STOP condition
occurs in the same high pulse as a START condition.
Slave Address
The slave address is defined as the seven most signifi-
cant bits (MSBs) of the serial data transmission. The
first byte of information sent to the MAX9726 after the
START condition must contain the slave address and
R/W bit (see Table 1). The MAX9726 is a slave device
only capable of being written to. The sent R/W bit must
always be set to zero when configuring the MAX9726.
The MAX9726 acknowledges the receipt of its address
even if R/W is set to 1. However, the MAX9726 does not
drive SDA. Addressing the MAX9726 with R/W set to 1
causes the master to receive all ones regardless of the
contents of the command register.
Acknowledge
The acknowledge bit (ACK) is a clocked 9th bit that the
MAX9726 uses to handshake receipt each byte of data
(see Figure 6). The MAX9726 pulls down SDA during
the master generated 9th clock pulse. The SDA line
must remain stable and low during the high period of
the acknowledge clock pulse. Monitoring ACK allows
for detection of unsuccessful data transfers. An unsuc-
cessful data transfer occurs if a receiving device is
busy or if a system fault has occurred. In the event of
an unsuccessful data transfer, the bus master may
reattempt communication.
MAX9726
DirectDrive, Headphone Amplifier with
BassMax, I2C, Volume and Gain Control
______________________________________________________________________________________
13
SCL
SDA
SSr
P
Figure 4. START, STOP, and REPEATED START Conditions
1
SCL
START
CONDITION
SDA
28
9
CLOCK PULSE FOR
ACKNOWLEDGMENT
ACKNOWLEDGE
NOT ACKNOWLEDGE
Figure 5. Acknowledge Bit
Table 1. MAX9726 Slave Address with Read/Write Bit
PART
A6 (MSB)
A5
A4
A3
A2
A1
A0
R/
W
MAX9726A
1
0011000
MAX9726B
1
0011010
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參數(shù)描述
MAX9726BETP+ 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(lèi)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
MAX9726BETP+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(lèi)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
MAX9726EVKIT+ 功能描述:放大器 IC 開(kāi)發(fā)工具 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
MAX9727EEP+ 功能描述:音頻放大器 Quad Audio Line Drvr w/3VRMS Output RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
MAX9727EEP+T 功能描述:音頻放大器 Quad Audio Line Drvr w/3VRMS Output RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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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