参数资料
型号: MAX9767ETJ+
厂商: Maxim Integrated Products
文件页数: 14/33页
文件大小: 0K
描述: IC AMP AUDIO .75W STER AB 32TQFN
标准包装: 60
类型: AB 类
输出类型: 2 通道(立体声)
在某负载时最大输出功率 x 通道数量: 750mW x 2 @ 4 欧姆
电源电压: 2.7 V ~ 5.5 V
特点: 消除爆音,麦克风,静音,短路保护和热保护,关机
安装类型: 表面贴装
供应商设备封装: 32-TQFN-EP(5x5)
封装/外壳: 32-WFQFN 裸露焊盘
包装: 管件
MAX9765/MAX9766/MAX9767
750mW Audio Amplifiers with Headphone Amp,
Microphone Preamp, and Input Mux
______________________________________________________________________________________
21
HPS_EN = 1. A logic high selects speaker mode, a
logic low selects headphone mode. Bits 5 to 7 (MG0-2)
control the gain of the microphone amplifiers (Table 5).
Read Data Format
In read mode (R/W = 1), the MAX9765/MAX9766 write
the contents of the selected register to the bus. The
direction of the data flow reverses following the
address acknowledge by the MAX9765/MAX9766. The
master device reads the contents of all registers,
including the read-only status register. Table 7 shows
the status register format. Figure 7 shows an example
read data sequence.
REGISTER
ADDRESS
0000 0010
BIT
NAME
VALUE
DESCRIPTION
0*
7
RESET
1
Reset device
0*
6
RESET
1
Reset device
0*
5
RESET
1
Reset device
0*
4
RESET
1
Reset device
0*
3
RESET
1
Reset device
0*
2
RESET
1
Reset device
1
X
Don’t Care
0*
Normal operation
0
SHDN
1
Shutdown
Table 4. SHDN Register Format
*Default state.
REGISTER
ADDRESS
0000 0011
BIT
NAME
VALUE
DESCRIPTION
7
MG2
6
MG1
5
MG0
Microphone amplifier
gain set; 3-bit code sets
the gain of the
microphone amplifiers
(Table 6)
0*
Speaker mode selected
4
SPKR/HP
1
Headphone mode
selected
0*
Differential input selected
3
INT/EXT
1
Single-ended input
selected
0*
Automatic headphone
detection enabled
2
HPS_D
1
Automatic headphone
detection disabled
(HPS ignored)
0*
Input 1 selected
1
IN1/IN2
1
Input 2 selected
0X
Don’t Care
Table 5. Control Register Format
S
ADDRESS
7 BITS
8 BITS
1
WR
ACK
COMMAND
ACK
DATA
ACK
P
I2C SLAVE ADDRESS.
SELECTS DEVICE.
REGISTER ADDRESS.
SELECTS REGISTER TO BE
WRITTEN TO.
REGISTER DATA.
I2C SLAVE ADDRESS.
SELECTS DEVICE.
DATA FROM
SELECTED REGISTER.
S
ADDRESS
7 BITS
8 BITS
1
WR
ACK
COMMAND
ACK
DATA
P
I2C SLAVE ADDRESS.
SELECTS DEVICE.
REGISTER ADDRESS.
SELECTS REGISTER
TO BE READ.
S
ADDRESS
7 BITS
WR
ACK
Figure 7. Write/Read Data Format Example
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MAX9767ETJ+T 功能描述:音频放大器 Integrated Circuits (ICs) 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
MAX9767ETJ-T 功能描述:音频放大器 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
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