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| 型号： | MAX9875ERP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/30页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO SUBSYSTEM 20UCSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | DirectDrive® |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道），带立体声耳机 |
| 在某负载时最大输出功率 x 通道数量： | 825mW x 1 @ 4 欧姆; 53mW x 2 @ 16 欧姆 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 特点： | 消除爆音，差分输入，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： | 20-UCSP |
| 封装/外壳： | 20-WFBGA，CSPBGA |
| 包装： | 带卷 (TR) |
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MAX9875
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
20
______________________________________________________________________________________
I2C Register Description
Zero-Crossing Detection (ZCD)
Zero-crossing detection limits distortion in the output
signal during volume transitions by delaying the transi-
tion until the mixer output crosses the internal bias volt-
age. A timeout period (typically 60ms) forces the
volume transition if the mixer output signal does not
cross the bias voltage.
1 = Zero-crossing detection is enabled.
0 = Zero-crossing detection is disabled.
Differential Input Configuration (IN_)
The inputs INA_ and INB_ can be configured for mono
differential or stereo single-ended operation.
1 = IN__ is configured as a mono differential input with
IN_2 as the positive and IN_1 as the negative input.
0 = IN__ is configured as a stereo single-ended input
with IN_2 as the right and IN_1 as the left input.
Preamplifier Gain (PGAIN_)
The preamplifier gain of INA_ and INB_ can be pro-
grammed by writing to PGAIN_.
00 = 0dB
01 = +9dB
10 = +20dB
11 = Reserved
The MAX9875 is controlled through five I2C program-
mable registers. Table 1 shows the MAX9875’s com-
plete register map. Tables 2, 3, and 5 show the
individual registers.
I2C Address
The slave address of the MAX9875 is 1001101R/(W).
Table 1. Register Map
REGISTER
ADDRESS
POR STATE
B7
B6
B5
B4
B3
B2
B1
B0
Input Mode
Control
0x00
0x40
0
ZCD
INA
INB
PGAINA
PGAINB
Speaker
Volume
Control
0x01
0x00
0
SVOL (Table 4)
Left
Headphone
Volume
Control
0x02
0x00
0
HPLVOL (Table 4)
Right
Headphone
Volume
Control
0x03
0x00
0
HPRVOL (Table 4)
Output Mode
Control
0x04
0x49
SHDN
0
OSC (Table 6)
OUTMODE (Table 7)
Table 2. Input Mode Control
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
0x00
0
ZCD
INA
INB
PGAINA
PGAINB
I2C Interface
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相关代理商/技术参数 |
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| MAX9877AERP+T | 功能描述:音频放大器 Audio Subsystem w/DirectDrive 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 |
| MAX9877AEWP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877AEWP+TG45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877EBP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9877EBP+TG45 | 制造商:Maxim Integrated Products 功能描述: |
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