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參數(shù)資料
| 型號(hào)： | MAX9850 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Stereo Audio DAC with DirectDrive Headphone Amplifier |
| 中文描述： | 立體聲音頻DAC，帶有DirectDrive®耳機(jī)放大器 |
| 文件頁數(shù)： | 26/36頁 |
| 文件大?。?/td> | 956K |
| 代理商： | MAX9850 |
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M
Headphone Overcurrent Interrupt Enable (IIOH)
1 = ALERT sets to 1 when either IOHL or IOHR set to 1.
0 = ALERT will not set when IOHL or IOHR set to 1.
IIOH = 1 configures the MAX9850 to set ALERT = 1
when one or both of the headphone amplifier outputs
(HPL, HPR) has experienced an overcurrent condition.
Program GM(1:0), while GPD = 1, to configure GPIO as
a hardware interrupt to alert a μC to an overcurrent con-
dition on the headphone outputs.
Enable Register
Shutdown (
SHDN
)
1 = The MAX9850 is powered on.
0 = The MAX9850 is in low-power shutdown mode. The
I
2
C interface remains active.
Set
SHDN
= 1 to power on the MAX9850. The head-
phone amplifier, master clock, line inputs/outputs, DAC,
charge pump, and charge-pump clock all have their
own enable bits. The individual components of the
MAX9850 can only be enabled after
SHDN
= 1.
MCLK Enable (MCLKEN)
1 = MCLK is connected to the MAX9850.
0 = MCLK is disconnected from the MAX9850.
MCLKEN must be set to 1 for the DAC to operate prop-
erly. The line inputs/outputs and headphone amplifiers
will work if MCLKEN = 0, but the charge-pump clock
must be derived from the internal oscillator.
Charge-Pump Enable (CPEN(1:0))
11 = Enable the internal charge pump.
00 = Disable the internal charge pump.
10 and 01 = Invalid.
Set CPEN(1:0) to 11 to enable the internal charge
pump when the line outputs and headphone amplifiers
are used.
Headphone Output Enable (HPEN)
1 = Enable the headphone outputs.
0 = Disable the headphone outputs.
Set HPEN = 1 to enable the headphone outputs. HPEN
= 0 places the headphone outputs in high impedance.
The line outputs must be enabled for the headphone
amplifiers to operate properly.
Line Output Enable (LNOEN)
1 = Enable the line outputs.
0 = Disable the line outputs.
LNOEN = 0 forces the line outputs and the headphone
outputs to high impedance. Set LNOEN = 1 to enable
the line outputs. The line outputs must be enabled for
the headphone amplifiers to operate properly.
Line Input Enable (LNIEN)
1 = Enable the line outputs.
0 = Disable the line outputs.
LNIEN = 1 enables the line inputs. LNIEN = 0 discon-
nects the line inputs.
DAC Enable (DACEN)
1 = Enable the audio DAC.
0 = Disable the audio DAC.
DACEN = 1 enables the DAC and all supporting circuit-
ry including the digital audio interface and interpolating
FIR filter. DACEN = 0 places the DAC and support cir-
cuitry into low-power shutdown mode.
Clock Register
Internal Clock Divide (IC(1:0))
00 = Internal clock divider is transparent (f
ICLK
=
f
MCLK
).
01 = (f
ICLK
= f
MCLK
/ 2).
10 = (f
ICLK
= f
MCLK
/ 3).
11 = (f
ICLK
= f
MCLK
/ 4).
IC(1:0) controls the internal clock divider that determines
the internal clock frequency from the master clock.
Charge-Pump Register
Stereo Audio DAC with DirectDrive
Headphone Amplifier
26
______________________________________________________________________________________
Table 16. Enable (0x5) Read/Write, Bit
Descriptions
B7
B6
B5
CPEN (1:0)
B4
B3
B2
B1
B0
SHDN
MCLKEN
HPEN LNOEN LNIEN DACEN
Table 17. Clock (0x6) Read/Write, Bit
Descriptions
B7
0
B6
0
B5
0
B4
0
B3
B2
B1
0
B0
0
IC(1:0)
Table 18. Charge Pump (0x7) Read/Write,
Bit Descriptions
B7
B6
B5
0
B4
B3
B2
B1
B0
SR(1:0)
CP(4:0)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MAX98500EVKIT+ | 功能描述:音頻 IC 開發(fā)工具 MAX98500 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
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| MAX98500EWE+T | 功能描述:音頻放大器 2.2W Mono Class D Amplifier 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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| MAX98502EWE+ | 功能描述:音頻放大器 Boosted Class D Amplifier 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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