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参数资料
| 型号： | MAX9723AETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/25页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .06W STER AB 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 系列： | DirectDrive® |
| 类型： | AB 类 |
| 输出类型： | 耳机，2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 60mW x 2 @ 16 欧姆 |
| 电源电压： | 1.8 V ~ 3.6 V |
| 特点： | 低音增强模式，消除爆音，I²C，静音，短路和热保护，关机，音量控制 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 管件 |
data (see Figure 5). The MAX9723 pulls down SDA dur-
ing 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.
Write Data Format
A write to the MAX9723 includes transmission of a
START condition, the slave address with the R/W bit
reset to 0 (see Table 1), one byte of data to configure
the command register, and a STOP condition. Figure 6
illustrates the proper format for one frame.
The MAX9723 only accepts write data, but it acknowl-
edges the receipt of its address byte with the R/W bit
set high. The MAX9723 does not write to the SDA bus
in the event that the R/W bit is set high. Subsequently,
the master reads all 1’s from the MAX9723. Always
reset the R/W bit to 0 to avoid this situation.
Command Register
The MAX9723 has one command register that is used
to enable/disable shutdown, enable/disable BassMax,
and set the maximum gain and volume. Table 2
describes the function of the bits contained in the com-
mand register.
Reset B7 to 0 to shut down the MAX9723. The MAX9723
wakes up from shutdown when B7 is set to 1 provided
SHDN is high. SHDN must be high and B7 must be set to
1 for the MAX9723 to operate normally (see Table 3).
Set B6 to 1 to enable BassMax (see Table 4). The output
signal’s low-frequency response will be boosted accord-
ing to the external components connected between
OUT_ and BB_. See the BassMax Gain-Setting
Components section in the Applications Information sec-
tion for details on choosing the external components.
MAX9723
Stereo DirectDrive Headphone Amplifier
with BassMax, Volume Control, and I2C
______________________________________________________________________________________
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
MAX9723 SLAVE ADDRESS
PART
A6
A5
A4
A3
A2
A1
A0
R/
W
MAX9723A
1001100
0
MAX9723B
1001101
0
MAX9723C
1001100
0
MAX9723D
1001101
0
Table 1. MAX9723 Address Map
B7
B6
B5
B4
B3
B2
B1
B0
SHUTDOWN
BassMax
ENABLE
MAXIMUM
GAIN
VOLUME
Table 2. MAX9723 Command Register
MODE
B7
MAX9723 Disabled
0
MAX9723 Enabled
1
Table 3. Shutdown Control,
SHDN = 1
MODE
B6
BassMax Disabled
0
BassMax Enabled
1
Table 4. BassMax Control
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9723AETE+ | 功能描述:音频放大器 Stereo DirectDrive Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9723AETE+T | 功能描述:音频放大器 Stereo DirectDrive Headphone Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9723AETE-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX9723AEUP | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9723BEBE | 制造商:Maxim Integrated Products 功能描述:STEREO DIRECTDRIVE HEADPHONE AMPLIF - Rail/Tube |
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