参数资料
型号: MC13783JVK5
厂商: Freescale Semiconductor
文件页数: 34/50页
文件大小: 0K
描述: IC PWR MGT AUD CIRCUIT 247MAPBGA
标准包装: 240
应用: 手持/移动设备
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 247-TFBGA
供应商设备封装: 247-MAPBGA(10x10)
包装: 托盘
Functional Description
4.3.5.5
Loudspeaker Amplifier Alsp
The concept of the Alsp amplifier is especially developed to be able to drive one loudspeaker during
handset, speakerphone and alert modes. It adopts a fully differential topology in order to be able to reach
high PSRR performance while Alsp is powered directly by the telephone battery. The feedback network
of the Alsp amplifier is fully integrated.
Under worst case conditions the dissipation of Alsp is considerable. To protect the amplifier against
overheating, a thermal protection is included which shuts down the amplifier when the maximum
allowable junction temperature within Alsp is reached.
Table 19. Amplifier Alsp Performance Specifications
Parameter
Condition
Min
Typ
Max
Units
Differential Output Swing
Supply Voltage
Gain
THD (2 nd and 3 rd )
PSRR
BP = 3.05 V
BP = 3.4 V in 8 Ω
1.0 kHz
1.0 kHz, BP = 3.4 V
1.0 kHz, BP = 4 V
1.0 kHz
1.0 kHz
with respect to BP
Vin = 100 mVpp
V OUT = 5 Vpp
V OUT = 5 Vpp
V OUT = 1 Vpp
Vout = 10 mVrms
5.0
5.6
3.05
5.8
90
6
3
1
4.65
6.2
5
3
0.1
0.1
V PP
V PP
V
dB
%
%
%
%
dB
20 Hz – 20 kHz
inputs AC grounded
A Weighted
Input Noise
Load Impedance
A weighted
Resistance
6.4
8
20
38
μ V RMS
Ω
4.3.5.6
Headset Amplifiers Ahsr/Ahsl
The Ahsr and Ahsl amplifiers are dedicated for amplification to a stereo headset, the Ahsr for the right
channel and Ahsl for the left channel. The feedback networks are fully integrated.
The return path of the headset is provided by the phantom ground which is at the same DC voltage as the
bias of the headset amplifiers. This avoids the use of large sized capacitors in series with the headset
speakers. All outputs withstand shorting to ground or to phantom ground.
Table 20. Amplifiers Ahsr and Ahsl Performance Specifications
Parameter
Singled-Ended Output Swing 32 Ohm load
Condition
Min
2
Typ
2.2
Max
Units
V PP
16 Ohm load
1.6
1.8
Gain
1.0 kHz
Vin = 100 mVpp
-0.2
0
0.2
dB
MC13783 Technical Data, Rev. 3.5
34
Freescale Semiconductor
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