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STV0674 数据表(PDF) 21 Page - STMicroelectronics

部件名 STV0674
功能描述  Tri-mode CMOS digital camera co-processor
PDF  35 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV0674 数据表(HTML) 21 Page - STMicroelectronics

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STV0674
Detailed Specifications
4.6
Audio
4.6.1
Audio ADC electrical parameters
4.6.2
Audio anti-aliasing filter characteristics
Table 5: Audio/ADC electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Fclk
Clock frequency
12
MHz
Dutymclk
Clk duty cycle
40
60
%
Fs
Sample frequency
8
48
kHz
Vbias
Bias reference voltage
Vbias / Vcc = 3V
1.5
V
Rbias
Vbias impedance
Vbias
5
k
Ω
RIN
Input impedance
IN+ / IN-
50
k
Ω
Cin
Input capacitance
IN+ / IN-
10
pF
Dyn In
Input dynamic range
ADC Out Full scale IN+ /
IN- Gain 0dB (AGC off)
1.5
Vpp
SNR*
Signal / Noise ratio
Sinewave @FS - 3dB
Gain 0dB
82
dB
Offset
Offset error
After automatic
calibration
100
LSB
Harma
a. Input sine wave 1kHz, Fmclk 11.289 MHz, BW = 10Hz-20 kHz, A-weighting filters, output 16 bits RAW PCM
Signal to peak harmonics
Sinewave @FS - 3dB
Gain 0dB
75
dB
Sinewave @FS - 3dB
Gain 24dB
50
dB
PSRR
Power supply rejection
Measured on ADC output
with a 1kHz 100mVpp
sinewave added to the
3.3V supply
40
LSBpp
LFc
Low cut-off frequency
Gain 0dB
15
Hz
HFc
High cut-off frequency
ADC out
0.45
Fs
Table 6: Audio anti-aliasing filter characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Fpassband
Passband frequency
Fs is sampling frequency
0.45
Fs
Ripplepass
Passband ripple
0->0.376Fs
-0.25
0.25
dB
Fstopband
Stopband frequency
Fs is sampling frequency
0.6
Fs



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