參數(shù)資料
型號： P95020ZLLGI8
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124
封裝： LLGA-124
文件頁數(shù)： 55/137頁
文件大?。?/td> 3533K
代理商： P95020ZLLGI8
P95020 / Preliminary Datasheet
Revision 0.7.10
24
2010 Integrated Device Technology, Inc.
LINE_IN to HP (mixer)
90
dB
DAC to LINE_OUT
93
dB
LINE_IN to A/D
90
dB
Total Harmonic Distortion:
THD+N ratio as defined in AES17 and outlined in AES6id,
non-weighted, at 1 kHz. Tested at -3 dB FS or equivalent for
analog only paths. 0 dB gain (PCM data -3 dB FS, analog
input set to achieve -3 dB full scale port output level)
LINE_IN to LINE_OUT (direct)
90
dB
LINE_IN to LINE_OUT (mixer)
80
dB
DAC to LINE_OUT
85
dB
DAC to HP (10 K
Ω)
80
dB
DAC to HP (16
Ω)
55
dB
LINE_IN to ADC
80
dB
AMIC to ADC
80
dB
D/A Frequency Response
± 0.25 dB limits. The D/A freq. response becomes 40 kHz
with sampling rates > 96 kHz. At ±3 dB the response range
is from 20-22,500 Hz at 48 kHz, or 20-20,000 Hz @
44.1 kHz or 20-45,000 Hz @ 96 kHz.
18
22,000
Hz
A/D Frequency Response
20
20,000
Hz
Transition Band
Transition band is 40-60% of sample rate.
19,200
28,800
Hz
Stop Band
Stop band begins at 60% of sample rate
28,800
Hz
Stop Band Rejection
85
dB
Out-of-Band Rejection
The integrated Out-of-Band noise generated by the DAC
process, during normal PCM audio playback, over a
bandwidth 28.8 to 100 kHz, with respect to a 1 Vrms DAC
output.
45
dB
Power Supply Rejection Ratio (1 kHz)
70
dB
Crosstalk between Input channels
85
dB
DAC Volume/Gain Step Size
0.75
dB
ADC/Mixer Volume/Gain Step Size
1.5
dB
Analog Mic Boost Step Size
10
dB
Input Impedance
50
K
Differential Input Impedance
20
K
Input Capacitance
15
pF
Mic Bias
2.97
V
External Load Impedance
6
k
2.4 AUDIO - MICROPHONE INPUT PORT
The microphone input port supports either analog or digital microphones. The analog and digital modes share pins so
only one mode is supported in a typical application.
2.4.1
AUDIO - Analog Microphone Input mode
The Analog Microphone input path consists of:
Stereo Differential Input Analog Microphone Buffer
L/R swap
Mono or stereo
Microphone Bias Generator with 2 independent bias outputs.
Microphone Boost Amplifier with selectable gain of 10, 20, or 30dB
The analog microphone interface provides a stereo differential input for supporting common electret cartridge
microphones in a balanced configuration (a single-ended configuration is also supported). A boost amplifier provides up
to 30dB of gain to align typical microphone full scale outputs to the ADC input range. The microphone input is then routed
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