参数资料
型号: MAX9888EWY+T
厂商: Maxim Integrated Products
文件页数: 114/115页
文件大小: 0K
描述: IC CODEC AUDIO FLEXSOUND 63WLP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: DirectDrive®, FLEXSOUND™
类型: D 类
输出类型: 3 通道,带立体声耳机
在某负载时最大输出功率 x 通道数量: 1.37W x 2 @ 8 欧姆; 40mW x 2 @ 16 欧姆
电源电压: 2.8 V ~ 5.5 V
特点: 消除爆音,差分输入,I²S,麦克风,静音,关机
安装类型: 表面贴装
供应商设备封装: 63-WLP
封装/外壳: 63-WFBGA,WLCSP
包装: 带卷 (TR)
配用: MAX9888EVKIT+-ND - KIT EVALUATION FOR MAX9888
Stereo Audio CODEC
with FlexSound Technology
MAX9888
98
Output Bypass Switches
The IC includes two output bypass switches that solve
common applications problems. When a single trans-
ducer is used for the loudspeaker and receiver, the need
exists for two amplifiers to power the same transducer.
Bypass switches connect the IC’s receiver amplifier
output to the speaker amplifier’s output, allowing either
amplifier to power the same transducer. In systems where
an external receiver amplifier is used, route its output to
the left speaker through RECP/RXINP and RECN/RXINN,
bypassing the Class D amplifier. In systems where an
external amplifier drives both the receiver and the IC’s
line input, one of the differential signals can be discon-
nected from the receiver when not needed by passing it
through the analog switch that connects RECP/RXINP to
RECN/RXINN.
Figure 31. Output Bypass Switch Block Diagrams
Table 30. Output Bypass Switches Register
REGISTER
BIT
NAME
DESCRIPTION
0x48
7
INABYP
See the Microphone Inputs section.
4
MIC2BYP
1
RECBYP
RXINP to RXINN Bypass Switch
Shorts RXINP to RXINN allowing a signal to pass through the MAX9888. Disable the
receiver amplifier when RECBYP = 1.
0 = Disabled
1 = Enabled
0
SPKBYP
RXIN to SPKL Bypass Switch
Shorts RXINP/RXINN to SPKLP/SPKLN allowing either the internal or an external
receiver amplifier to power the left speaker. Disable the left speaker amplifier when
SPKBYP = 1.
0 = Disabled
1 = Enabled
EXTERNAL
RECEIVER
AMP
RECP/RXINP
RECEN
SPLEN
POWER/DISTORTION
LIMITER
RECBYP
SPKBYP
10I*
RECN/RXINN
SPKLVDD
SPKLP
SPKLN
0dB
SPKLGND
+6dB
*OPTIONAL 10I RESISTORS IMPROVE DISTORTION
THROUGH THE ANALOG SWITCH.
SPEAKER AMPLIFIER BYPASS USING AN
EXTERNAL RECEIVER AMPLIFIER
SPEAKER AMPLIFIER BYPASS USING THE
INTERNAL RECEIVER AMPLIFIER
CONTROLLING AN EXTERNAL RECEIVE
AMPLIFIER AND SPEAKER
EXTERNAL
RECEIVER AMP
RECN/RXINN
RECEN
SPLEN
POWER/DISTORTION
LIMITER
RECBYP
SPKBYP
RECN/RXINN
SPKLVDD
SPKLP
SPKLN
0dB
SPKLGND
+6dB
RECP/RXINP
RECEN
SPLEN
POWER/DISTORTION
LIMITER
RECBYP
SPKBYP
RECN/RXINN
SPKLVDD
SPKLP
SPKLN
0dB
SPKLGND
+6dB
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