STV0674-100TQFP STMICROELECTRONICS [STMicroelectronics], STV0674-100TQFP Datasheet - Page 21

• Manufacturer Part Number: STV0674-100TQFP
• Description: Tri-mode CMOS digital camera co-processor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

STV0674
4.6
4.6.1
4.6.2
Audio
Audio ADC electrical parameters
Audio anti-aliasing filter characteristics
Fclk
Dutymclk
Fs
Vbias
Rbias
RIN
Cin
Dyn In
SNR*
Offset
Harm
PSRR
LFc
HFc
Fpassband
Ripplepass
Fstopband
a.
Symbol
Symbol
a
Input sine wave 1kHz, Fmclk 11.289 MHz, BW = 10Hz-20 kHz, A-weighting filters, output 16 bits RAW PCM
Clock frequency
Clk duty cycle
Sample frequency
Bias reference voltage
Vbias impedance
Input impedance
Input capacitance
Input dynamic range
Signal / Noise ratio
Offset error
Signal to peak harmonics
Power supply rejection
Low cut-off frequency
High cut-off frequency
Passband frequency
Passband ripple
0->0.376Fs
Stopband frequency
Parameter
Parameter
Table 6: Audio anti-aliasing filter characteristics
Table 5: Audio/ADC electrical characteristics
Vbias / Vcc = 3V
Vbias
IN+ / IN-
IN+ / IN-
ADC Out Full scale IN+ /
IN- Gain 0dB (AGC off)
Sinewave @FS - 3dB
Gain 0dB
After automatic
calibration
Sinewave @FS - 3dB
Gain 0dB
Sinewave @FS - 3dB
Gain 24dB
Measured on ADC output
with a 1kHz 100mVpp
sinewave added to the
3.3V supply
Gain 0dB
ADC out
Fs is sampling frequency
Fs is sampling frequency
Test conditions
Test conditions
Min.
Min.
-0.25
0.45
0.45
40
75
50
8
Typ.
Typ.
Detailed Specifications
1.5
1.5
12
50
82
40
10
5
Max.
Max.
0.25
100
0.6
60
48
15
LSBpp
Unit
Unit
MHz
LSB
Vpp
kHz
k
k
dB
dB
dB
Hz
dB
pF
Fs
Fs
Fs
%
V
21/35