参数资料
型号: MCF53013CQT240
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: MICROPROCESSOR, PQFP208
封装: 28 X 28 MM, ROHS COMPLIANT, LQFP-208
文件页数: 53/62页
文件大小: 2365K
代理商: MCF53013CQT240
Preliminary Electrical Characteristics
MCF5301x Data Sheet, Rev. 5
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
57
5.20.3
Headphone Amplifier
The headphone amplifier boosts the power from the DAC and drives the headphone. It also provides analog volume control to
optimize the noise performance of the entire channel. Table 37 shows the specifications for the microphone amplifier.
5.20.4
Microphone Amplifier
The microphone amplifier boosts the signal from the microphone and provides it to the ADC. The gain control present in the
microphone amplifier helps in optimizing the noise performance of the entire channel. Table 38 shows the specifications for the
microphone amplifier.
Table 37. Headphone Amplifier Specifications
Parameter
Conditions
Min
Typ
Max
Units
Quiescent Current
600
μA
Shutdown Current
TBD
Input Reference Offset
2
5
mV
Output Power
Fin = 1kHz, THD+N = 1%, RL = 16Ω
—40—
mW
Total Harmonic Distortion (THD)
Gain = 0dB, RL =16Ω,
BW=200Hz –4kHz
Full Power, 31.25mW
0.05
%
Half Power, 16.5mW
0.05
Integrated Output Noise
Gain = 0dB, BW = 20Hz – 20kHz
15
μV
Signal to Noise Ratio (SNR)
Gain = 0dB, VOUT = 0.7VRMS ,
BW = 20Hz – 20kHz
—93—
dB
Power Supply Rejection Ratio
(PSRR)
Gain = 0dB,
Vripple =200mVpp
f = 217Hz
60
dB
f = 1kHz
60
f = 4kHz
60
Maximum Cap Load Drive
No Sustained Oscillations
300
pF
Output SC Current
150
mA
Gain Error
Gain = –45, –21, –12, –6, –2, 0 dB
±0.5
dB
Table 38. Microphone Amplifier Specifications
Parameter
Conditions
Min
Typ
Max
Units
Quiescent Current
500
μA
Shutdown Current
TBD
Input Reference Offset
2
5
mV
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