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参数资料
| 型号： | MAX9851EVCMODU |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 编解码器 |
| 英文描述： | MAX9851评估板/评估系统 |
| 中文描述： | PCM CODEC |
| 文件页数： | 32/73页 |
| 文件大小： | 1357K |
| 代理商： | MAX9851EVCMODU |
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MAX9851/MAX9853
Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
38
______________________________________________________________________________________
VIBE Output
The MAX9851/MAX9853 include a VIBE digital output
that may be used to control an external vibrator/trans-
ducer, or may be used as a general-purpose output.
The Vibe circuitry module has its own multiplexer to
allow it to operate from either the S1 or S2 digital audio
interface. Set TSEL to 0 (register 0x09, bit B5) to derive
the VIBE output from the primary digital audio interface
right channel. Set TSEL to 1 to derive the VIBE output
from the secondary digital audio interface left or mono-
mixed left and right channels.
When using signal data to drive VIBE, programmable
gain set by TGAIN (register 0x19, bits B7–B4) is used
to make adjustments with 10-bit output resolution. A
digital lowpass filter is used to condition the signal for
use at the VIBE output.
The VIBE output signal may be generated using either
a threshold comparison of a rectified signal or by an
oversampled 1-bit DAC conversion of a nonrectified
signal. Set TMUX to 11 (register 0x09, bits B7–B6) to
use the output of the internal sigma-delta converter for
driving the transducer output. Set TMUX to 10 to com-
pare the digital audio signal to a programmable
squelch threshold level and generate an output signal
as shown in Figure 6. When driving an external trans-
ducer use an external lowpass filter as shown in Figure
7. The VIBE signal can be amplified if needed by an
external amplifier. Set TMUX to 00 or 01 to force the
output to a fixed 1 or 0, respectively, when using VIBE
as a general-purpose output. Use a 1k pullup resistor
to DVDD to achieve a full-scale signal from the open-
drain output.
Figure 6
. VIBE Output Using Comparator
COMPARATOR
SQUELCH LEVEL
COMPARATOR
OUTPUT SIGNAL
INPUT SIGNAL
Figure 7. Transducer/Vibe Functional Diagram
S1 RIGHT S2 LEFT+RIGHT
TSEL
1-BIT DAC
10k
TRANSDUCER
VIBE
0
1
TMUX
DVDD
400Hz
LOWPASS
FILTER
PGA
-30dB TO +30dB
5-BIT
SQUELCH
LEVEL
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9851EVKIT | 功能描述:音频 IC 开发工具 Evaluation Kit/Evaluation System for the MAX9851 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX9853ETM+ | 功能描述:接口—CODEC Stereo Audio CODEC w/DirectDrive Amp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| MAX9853ETM+T | 功能描述:接口—CODEC Stereo Audio CODEC w/DirectDrive Amp RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| MAX9853EVCMODU | 功能描述:音频 IC 开发工具 Evaluation Kit/Evaluation System for the MAX9853 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX9853EVKIT | 功能描述:音频 IC 开发工具 Evaluation Kit/Evaluation System for the MAX9853 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
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