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參數(shù)資料
| 型號： | MAX9723DEVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVALUATION KIT FOR MAX9723 |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 系列： | DirectDrive® |
| 放大器類型： | AB 類 |
| 輸出類型： | 耳機，2-通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 60mW x 2 @ 16 歐姆 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 板類型： | 完全填充 |
| 已用 IC / 零件： | MAX9723D |
| 已供物品： | 板 |
| 相關產品： | MAX9723DETE+T-ND - IC AMP AUDIO .06W STER AB 16TQFN MAX9723DEBE+T-ND - IC AMP AUDIO .06W STER AB 16UCSP MAX9723DETE+-ND - IC AMP AUDIO .06W STER AB 16TQFN |
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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9723DEVKIT+ | 功能描述:放大器 IC 開發(fā)工具 MAX9723A/B/C/D Eval Kit RoHS:否 制造商:International Rectifier 產品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX9724AEBC+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.045W CLS-AB 12UCSP - Rail/Tube |
| MAX9724AEBC+G45 | 制造商:Maxim Integrated Products 功能描述:60MW DIRECTDRIVE STEREO HEADPHONE - Tape and Reel |
| MAX9724AEBC+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.045W CLS-AB 12UCSP - Tape and Reel |
| MAX9724AEBC+TG45 | 功能描述:音頻放大器 60mW DirectDrive Headphone Amplifier RoHS:否 制造商:STMicroelectronics 產品: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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