参数资料
型号: AS3658F-BCTP
厂商: ams
文件页数: 114/158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
9.11.4 Power Save Options
To save power, especially when driving 32 Ω loads, a reduction of the bias current can be selected.
Bias current reduction settings for headphone output:
00: 0%
01: 17%
10: 34%
11: 50%
9.11.5 Parameters
Table 118. Power Amplifier Parameter
Parameter
Min
Typ
Max
Unit
Analog Performance
R_Load at AOUTR and AOUTL single ended
Vout
Gain Step Precision (RLmin-max,20Hz-20kHz)
SINAD no load, LineIn-> HPH, A-weighted
THD @ 1kHz, no load
THD @ 1kHz, 32 Ω , 10mW
16
±0.5
-97
-88
-80
1.13
Ω
Vp
dB
dB
dB
dB
THD @ 1kHz, 32 Ω , 20mW
THD @ 1kHz, 16 Ω , 40mW
Channel Separation (32 Ω , dc-coupled)
-74
-68
60
-66
-60
dB
dB
dB
PSRR (200Hz-20kHz)
Shorted Protection Level
Shorted Protection Level of common mode buffer
IOUT_powerdown
Tpower_up (HP_CM=0.1μF)
GND cancellation GND - AUDIO_GND to
HP_R, HP_L no load
100Hz
1kHz
10kHz
60
-20
90
260
370
150
50
50
40
20
dB
mA
mA
μA
ms
dB
9.11.6 Register Description
To get an interrupt on an over-current event, the corresponding bit in the Interrupt enable register has to be set.
Changing the bias current or the output driver strength is done via AudioSet2 register. All other headphone driver
settings are controlled by the following two registers.
www.austriamicrosystems.com
Revision 1v13
113 - 157
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