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參數(shù)資料
| 型號： | MAX9702B |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier |
| 中文描述： | 1.8W的，濾波，立體聲D類音頻功率放大器和DirectDrive立體聲耳機放大器 |
| 文件頁數(shù)： | 21/32頁 |
| 文件大小： | 1411K |
| 代理商： | MAX9702B |
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I
2
C Interface
The MAX9702 features an I
2
C 2-wire serial interface
consisting of a serial data line (SDA) and a serial clock
line (SCL). SDA and SCL facilitate communication
between the MAX9702 and the master at clock rates up
to 400kHz. Figure 9 shows the 2-wire interface timing
diagram. The MAX9702 is a receive-only slave device
relying on the master to generate the SCL signal. The
MAX9702 cannot write to the SDA bus except to
acknowledge the receipt of data from the master. The
MAX9702 does not acknowledge a read command
from the master. The master, typically a microcontroller,
generates SCL and initiates data transfer on the bus.
A master device communicates to the MAX9702 by
transmitting the proper address followed by the data
word. Each transmit sequence is framed by a START (S)
or REPEATED START (S
r
) condition and a STOP (P) con-
dition. Each word transmitted over the bus is 8 bits long
and is always followed by an acknowledge clock pulse.
The MAX9702 SDA line operates as both an input and
an open-drain output. A pullup resistor, greater than
500
, is required on the SDA bus. The MAX9702 SCL
line operates as an input only. A pullup resistor, greater
than 500
, is required on SCL if there are multiple mas-
ters on the bus, or if the master in a single-master sys-
tem has an open-drain SCL output. Series resistors in
line with SDA and SCL are optional. Series resistors
protect the digital inputs of the MAX9702 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). SDA and SCL idle high when the I
2
C bus is
not busy.
START and STOP Conditions
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
10). A START (S) condition from the master signals the
beginning of a transmission to the MAX9702. The mas-
ter terminates transmission and frees the bus by issu-
ing a STOP (P) condition. The bus remains active if a
REPEATED START (Sr) condition is generated instead
of a STOP condition.
M
1.8W, Filterless, Stereo, Class D Audio Power
Amplifier and DirectDrive Stereo Headphone Amplifier
______________________________________________________________________________________
21
SCL
SDA
START
CONDITION
STOP
CONDITION
REPEATED
START
CONDITION
START
CONDITION
t
HD, STA
t
SU, STA
t
HD, STA
t
SP
t
BUF
t
SU, STO
t
LOW
t
SU, DAT
t
HD, DAT
t
HIGH
t
R
t
F
Figure 9. 2-Wire Serial-Interface Timing Diagram
SCL
SDA
S
Sr
P
Figure 10. START, STOP, and REPEATED START Conditions
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9703 | Hex 2-Input OR Drivers 20-CDIP -55 to 125 |
| MAX9703-MAX9704 | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
| MAX9703ETJ | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
| MAX9704ETJ | 15W, Filterless, Spread-Spectrum Mono/Stereo Class D Amplifiers |
| MAX9711ETC | Synchronous 8-Bit Up/Down Counters 28-LCCC -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9702BETI+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TQFN - Rail/Tube |
| MAX9702BETI+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TQFN - Tape and Reel |
| MAX9702BEUI+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Rail/Tube |
| MAX9702BEUI+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Tape and Reel |
| MAX9702ETI+ | 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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