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参数资料
| 型号： | MAX9875ERP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/30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
______________________________________________________________________________________
23
SCL
SDA
START
CONDITION
STOP
CONDITION
REPEATED
START CONDITION
START
CONDITION
tHD:STA
tSU:STA
tBUF
tSU:STO
tLOW
tSU:DAT
tHD:DAT
tHIGH
tR
tF
Figure 6. 2-Wire Interface Timing Diagram
SCL
SDA
SSr
P
Figure 7. START, STOP, and REPEATED START Conditions
SMBus is a trademark of Intel Corp.
I2C Interface Specification
The MAX9875 features an I2C/SMBus-compatible, 2-
wire serial interface consisting of a serial-data line
(SDA) and a serial-clock line (SCL). SDA and SCL facil-
itate communication between the MAX9875 and the
master at clock rates up to 400kHz. Figure 6 shows the
2-wire interface timing diagram. The master generates
SCL and initiates data transfer on the bus. The master
device writes data to the MAX9875 by transmitting the
proper slave address followed by the register address
and then the data word. Each transmit sequence is
framed by a START (S) or REPEATED START (Sr) con-
dition and a STOP (P) condition. Each word transmitted
to the MAX9875 is 8 bits long and is followed by an
acknowledge clock pulse. A master reading data from
the MAX9875 transmits the proper slave address fol-
lowed by a series of nine SCL pulses. The MAX9875
transmits data on SDA in sync with the master-generat-
ed SCL pulses. The master acknowledges receipt of
each byte of data. Each read sequence is framed by a
START or REPEATED START condition, a not acknowl-
edge, and a STOP condition. SDA operates as both an
input and an open-drain output. A pullup resistor, typi-
cally greater than 500, is required on SDA. SCL oper-
ates only as an input. A pullup resistor, typically greater
than 500, is required on SCL if there are multiple mas-
ters on the bus, or if the single master has an open-
drain SCL output. Series resistors in line with SDA and
SCL are optional. Series resistors protect the digital
inputs of the MAX9875 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 cycle. The
data on SDA must remain stable during the high period
of the SCL pulse. Changes in SDA while SCL is high
are control signals (see the
START and STOP
Conditions section).
START and STOP Conditions
SDA and SCL idle high when the bus is not in use. A
master initiates communication by issuing a START con-
dition. 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 7). A START
condition from the master signals the beginning of a
transmission to the MAX9875. The master terminates
transmission, and frees the bus, by issuing a STOP con-
dition. The bus remains active if a REPEATED START
condition is generated instead of a STOP condition.
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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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