參數(shù)資料
型號： MCF53013CQT240
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： MICROPROCESSOR, PQFP208
封裝： 28 X 28 MM, ROHS COMPLIANT, LQFP-208
文件頁數(shù)： 53/62頁
文件大?。?/td> 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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