参数资料
型号: MAX9796EBX+TG45
厂商: Maxim Integrated Products
文件页数: 7/28页
文件大小: 0K
描述: IC AMP AUDIO 2.3W MONO D 36UCSP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: DirectDrive®
类型: D 类
输出类型: 1-通道(单声道),带立体声耳机
在某负载时最大输出功率 x 通道数量: 2.3W x 1 @ 4 欧姆
电源电压: 2.7 V ~ 5.5 V
特点: 消除爆音,差分输入,I²C,静音,短路和热保护,关机,音量控制
安装类型: 表面贴装
供应商设备封装: 36-UCSP
封装/外壳: 36-WFBGA,CSBGA
包装: 带卷 (TR)
Operating Modes
Fixed-Frequency Modulation
The MAX9796 features a fixed-frequency modulation
mode with a 1.1MHz switching frequency, set through
the I2C interface (Table 2). In fixed-frequency modula-
tion mode, the frequency spectrum of the Class D out-
put consists of the fundamental switching frequency
and its associated harmonics (see the Wideband
Output Spectrum Fixed-Frequency Mode graph in the
Typical Operating Characteristics).
Spread-Spectrum Modulation
The MAX9796 features a unique spread-spectrum
modulation that flattens the wideband spectral compo-
nents. Proprietary techniques ensure that the cycle-to-
cycle variation of the switching period does not
degrade audio reproduction or efficiency (see the
Typical Operating Characteristics). Select the spread-
spectrum modulation mode through the I2C interface
(Table 2). In spread-spectrum modulation mode, the
switching frequency varies randomly by ±30kHz
around the center frequency (1.16MHz). The modula-
tion scheme remains the same, but the period of the
sawtooth waveform changes from cycle to cycle
(Figure 2). Instead of a large amount of spectral energy
present at multiples of the switching frequency, the
energy is now spread over a bandwidth that increases
with frequency. Above a few megahertz, the wideband
spectrum looks like white noise for EMI purposes (see
Figure 3).
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
______________________________________________________________________________________
15
VOUT+ - VOUT-
tSW
VIN-
VIN+
OUT+
OUT-
tON(MIN)
Figure 2. Output with an Input Signal Applied (Spread-Spectrum Modulation Mode)
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MAX98088EWY+T 功能描述:接口—CODEC Dual I2S Codec 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