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參數資料
| 型號： | CMOD232+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 27/36頁 |
| 文件大小： | 0K |
| 描述： | EVAL SYSTEM FOR MAX9850 |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 系列： | * |
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The DAC begins its soft-start routine after being enabled
and after receiving 32 LRCLK cycles. All internal filters
are initialized and the DAC gain gradually ramps to
maximum. The MAX9850’s headphone output level is
determined by the headphone amplifier volume setting.
Mute the audio outputs before powering down the
MAX9850 by setting MUTE to 1 (register 0x2, bit B7).
Ramping the volume to its maximum attenuation is an
alternative to muting the output. VMN in the status A reg-
ister (register 0x0, bit B3) notifies the C when the out-
puts are at maximum attenuation. Disable the
headphone and line outputs once the audio is fully atten-
uated. Headphone and line outputs can be disabled
within 50s without any audible clicks or pops, once the
audio is fully attenuated. Place the MAX9850 in shut-
down after the outputs are disabled.
Stereo Speakerphone
The MAX9850 can be combined with a stereo speaker
amplifier to create a complete speakerphone playback
solution. The MAX9701, or another Maxim stereo
speaker amplifier, can be used to drive the speakers
while the MAX9850’s integrated DirectDrive headphone
amplifier drives the headphones (see Figure 12).
Configure GPIO to output high when a headphone is not
connected and low when the headphone is connected.
Connect GPIO to the
SHDN control of the MAX9701.
Configure the interrupt enable register to set ALERT (reg-
ister 0x0, bit B7) when HPS changes state. The C polls
the status A register and waits for ALERT to set when
HPS changes state. The C changes the state of GPIO
when ALERT is set, either turning off the speaker amp
because a headphone is connected or enabling the
speaker amp when the headphone is disconnected.
MAX9850
Stereo Audio DAC with DirectDrive
Headphone Amplifier
______________________________________________________________________________________
33
μC
MAX9850
MAX9701*
1.8V TO 3.6V
3.3V TO 5.5V
0.47
μF
AGND
DGND
PGND
SHDN
PVSS SVSS
OUTR+
OUTR-
INL+
INL-
OUTL+
OUTL-
INR+
INR-
HPL
HPS
HPR
AVDD
VDD
PVDD
DVDD
DIGITAL
AUDIO
SOURCE
SDIN
MCLK
C1N
C1P
REF
SDA
10k
Ω
SCL
BCLK
LRCLK
*FUTURE PRODUCT—CONTACT FACTORY FOR AVAILABILITY.
1
μF
1
μF
1
μF
0.47
μF
0.47
μF
0.47
μF
0.47
μF
2.2
μF
1
μF
GPIO
OUTR
OUTL
Figure 12. Stereo Speakerphone
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CMOD232+ | 功能描述:界面開發(fā)工具 Cmod232+ Eval Kit RoHS:否 制造商:Bourns 產品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| CMOD3003 | 功能描述:二極管 - 通用，功率，開關 ULTRAMINI SURFACE MOUNT RoHS:否 制造商:STMicroelectronics 產品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復時間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube |
| CMOD3003 BK | 制造商:Central Semiconductor Corp 功能描述:Diode Switching 180V 0.6A Box |
| CMOD3003 TR | 制造商:Central Semiconductor Corp 功能描述:Diodes - General Purpose, Power, Switching ULTRAMINI SURFACE MOUNT |
| CMOD3003_10 | 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SURFACE MOUNT LOW LEAKAGE SILICON SWITCHING DIODE |
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