参数资料
型号: MAX9856ETL+T
厂商: Maxim Integrated Products
文件页数: 29/46页
文件大小: 0K
描述: IC AUDIO CODEC 40TQFN-EP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 音频编解码器
数据接口: 串行
分辨率(位): 18 b
ADC / DAC 数量: 2 / 2
三角积分调变:
S/N 比,标准 ADC / DAC (db): 77 / 91
动态范围,标准 ADC / DAC (db): 85 / 91
电压 - 电源,模拟: 1.71 V ~ 3.6 V
电压 - 电源,数字: 1.71 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
供应商设备封装: 40-TQFN-EP(5x5)
包装: 带卷 (TR)
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
______________________________________________________________________________________
35
Audio Outputs
The MAX9856 features stereo headphone amplifiers and
line output amplifiers with DirectDrive technology.
DirectDrive eliminates the need for bulky and expensive
DC-blocking capacitors on the outputs. The DirectDrive
biasing scheme is illustrated in Figure 4. The head-
phone outputs have separate left/right volume controls
while the line outputs produce a fixed level signal.
The audio outputs feature ground sensing, which is
intended to reduce the effect of ground noise. In many
systems, the ground return for line outputs and head-
phone jacks is used by other functions such as video
signals and microphone signals. The sharing of ground
can result in interference that is audible. The MAX9856’s
ground sense provides a path for the interfering signal to
be input and combined with the output audio signal to
reduce the audibility of the interference. Connect HGND-
SNS directly to the ground terminal of the headphone jack
to enable ground sense on the headphones (Figure 5).
Similarly connect LGNDSNS directly to the ground termi-
nal of a line output jack to enable ground sense on the
line outputs. If ground sense is not required, connect
HGNDSNS and LGNDSNS to AGND. Table 13 lists the
audio output control registers and bit description.
AVDD
AVDD/2
GND
CONVENTIONAL AMPLIFIER BIASING SCHEME
DirectDrive AMPLIFIER BIASING SCHEME
AVDD
AGND
SVSS
Figure 4. Traditional Amplifier Output vs. MAX9856 DirectDrive Output
GND
HPR
HPL
HPR
HGNDSNS
Figure 5. Ground Sense Connection
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MAX9856EVKIT+ 功能描述:音频 IC 开发工具 Evaluation Kit for the MAX9856 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
MAX9856GTL/V+ 功能描述:接口—CODEC Low-Power Audio CODEC with DirectDrive Headphone Amplifiers 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
MAX9856GTL/V+T 功能描述:接口—CODEC Low-Power Audio CODEC with DirectDrive Headphone Amplifiers 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
MAX985EBT+T 功能描述:校验器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压(最大值):6 mV 电源电流(最大值):1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel
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