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PCM2912 bảng dữ liệu(PDF) 4 Page - Texas Instruments

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tên linh kiện PCM2912
Giải thích chi tiết về linh kiện  AUDIO CODEC WITH USB INTERFACE, MONO MICROPHONE INPUT AND STEREO HEADPHONE OUTPUT
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PCM2912 bảng dữ liệu(HTML) 4 Page - Texas Instruments

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PCM2912
SLES216 – FEBRUARY 2008
ELECTRICAL CHARACTERISTICS (continued)
All specifications at TA = 25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted
PCM2912PJT
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
ADC CHARACTERISTICS
Resolution
16
Bits
Audio data channel
1
channel
8, 11.025, 16, 22.05, 32, 44.1,
Sampling frequency
kHz
48
DYNAMIC PERFORMANCE(6)
THD+N
VIN = –1 dB of 0.43 VCCA
0.01%
0.02%
Dynamic range
A-weighted
82
90
dB
S/N ratio
A-weighted
84
92
dB
DC ACCURACY
Gain error
±2
±10 % of FSR
Bipolar zero error
±0
% of FSR
ANALOG INPUT
Input voltage
0.43 VCCA
Vp-p
Center voltage
0.5 VCCA
V
–3 dB
150
kHz
Antialiasing filter frequency
response
fIN = 20 kHz
–0.08
dB
MICROPHONE AMPLIFIER
Gain
0
20
dB
Input impedance
20
k
Ω
INPUT PGA
Gain range
–12
30
dB
Gain step size
1
dB
DIGITAL FILTER PERFORMANCE
Pass band
0.454 fS
Hz
Stop band
0.583 fS
Hz
Pass-band ripple
±0.02
dB
Stop-band attenuation
–65
dB
Delay time
17.4/fS
s
HPF frequency response
–3 dB
0.078 fS
MHz
(6)
fIN = 1 kHz, using Audio Precision™ System Two™, RMS mode with 20 kHz LPF, 400 Hz HPF in calculation. Mic amp = 0 dB, PGA =
0 dB.
4
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): PCM2912



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