参数资料
型号: AS3658F-BCTP
厂商: ams
文件页数: 90/158页
文件大小: 0K
描述: IC PMU POWER/AUDIO 124-CTBGA
标准包装: 2,500
应用: 便携式设备
电流 - 电源: 7mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 124-TFBGA
供应商设备封装: 124-CTBGA(8x8)
包装: 带卷 (TR)
AS3658
Data Sheet Confidential
- Detailed Description- Audio Functions
Figure 39. AS3658 Microphone Recording and I2S I/O Playback (either I2S 1 or I2S 2/PCM)
Figure 40. AS3658 Recording of the Mixed output signal and parallel playback (either I2S 1 or I2S 2/PCM)
9.2
Common mode voltage generation of HP_CM, LINE_CM
The common mode voltage of the Headphone and Lineout is stored in the C_hpcm and C_linecm capacitor
(connected between HP_CM to VSS and LINE_CM to VSS). These capacitor are also responsible for the popless
startup, PSRR of the amplifiers and sense path of the GND cancellation circuit.
Startup and PSRR is defined by the value of the external capacitors. The RC limits the maximum achievable PSRR:
R=6M Ω typ, C=0.1...1μF:
Table 88. common mode voltage, Audio start-up and PSRR
Capacitor value for C_hpcm and
C_linecm
Startup time (typ)
Maximum achievable PSRR
@ 1kHz (typ) @ 100Hz (typ)
μF
0.1
1
www.austriamicrosystems.com
msec
150
1500
Revision 1v13
dB
76
90
dB
56
76
89 - 157
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