AK4671_10 Datasheet, PDF (12/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
ANALOG CHARACTERISTICS (10bit SAR ADC)
(Ta=25°C; AVDD=PVDD=SAVDD=DVDD =TVDD2 =TVDD3=3.3V; VSS1=VSS2=VSS3=VSS4=0V; unless
otherwise specified)
Parameter
min
typ
max
Units
10bit SAR ADC Characteristics
Resolution
-
10
-
Bits
No Missing Codes
9
10
-
Bits
Integral Linearity Error
-
-
±2
LSB
DNL
-
±1
-
LSB
Analog Input Voltage Range
0
-
SAVDD
V
Offset Error
-
-
±3
LSB
Gain Error
-
-
±2
LSB
Accuracy (Note 31)
-
-
±1
%
Note 31. Accuracy is the difference between the output code when 1.1V is input to SAIN1, SAIN2 or SAIN3 pin and the
“ideal” code at 1.1V.
FILTER CHARACTERISTICS (CODEC)
(Ta=25°C; AVDD=PVDD =SAVDD=2.2 ∼ 3.6V; DVDD=TVDD2 =TVDD3=1.6 ∼ 3.6V; fs=44.1kHz; Programmable
Filter=OFF)
Parameter
Symbol
min
typ
max
Units
ADC Digital Filter (Decimation LPF):
Passband (Note 32)
±0.16dB
PB
0
-
17.3
kHz
−0.66dB
-
19.4
-
kHz
−1.1dB
-
19.9
-
kHz
−6.9dB
-
22.1
-
kHz
Stopband
SB
25.9
-
-
kHz
Passband Ripple
PR
-
-
±0.1
dB
Stopband Attenuation
SA
69
-
-
dB
Group Delay (Note 33)
GD
-
19
-
1/fs
Group Delay Distortion
ΔGD
-
0
-
μs
DAC Digital Filter (LPF):
Passband (Note 32)
±0.1dB
PB
0
-
17.4
kHz
−1.0dB
-
20.0
-
kHz
−3.0dB
-
21.1
-
kHz
Stopband
SB
25.7
-
-
kHz
Passband Ripple
PR
-
-
±0.1
dB
Stopband Attenuation
SA
68
-
-
dB
Group Delay (Note 33)
GD
-
19
-
1/fs
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0 ∼ 20.0kHz
FR
-
±1.4
-
dB
Note 32. The passband and stopband frequencies scale with fs (system sampling rate).
For example, DAC is PB=0.454 x fs (@−0.7dB). Each response refers to that of 1kHz.
Note 33. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of both channels from the input register to the output register of the ADC.
For the DAC, this time is from setting the 16-bit data of both channels from the input register to the output of
analog signal.
MS0666-E-02
- 12 -
2010/06